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Step-by-Step Guide for Adding a Stack, Expanding Control Lines, and Building an Assembler

After the positive response to my first tutorial on expanding the RAM, I thought I'd continue the fun by expanding the capabilities of Ben's 8-bit CPU even further. That said, you'll need to have done the work in the previous post to be able to do this. You can get a sense for what we'll do in this Imgur gallery.
In this tutorial, we'll balance software and hardware improvements to make this a pretty capable machine:

Parts List

To only update the hardware, you'll need:
If you want to update the toolchain, you'll need:
  1. Arduino Mega 2560 (Amazon) to create the programmer.
  2. Ribbon Jumper Cables (Amazon) to connect the Arduino to the breadboard.
  3. TL866 II Plus EEPROM Programmer (Amazon) to program the ROM.
Bonus Clock Improvement: One additional thing I did is replace the 74LS04 inverter in Ben's clock circuit with a 74LS14 inverting Schmitt trigger (datasheet, Jameco). The pinouts are identical! Just drop it in, wire the existing lines, and then run the clock output through it twice (since it's inverting) to get a squeaky clean clock signal. Useful if you want to go even faster with the CPU.

Step 1: Program with an Arduino and Assembler (Image 1, Image 2)

There's a certain delight in the physical programming of a computer with switches. This is how Bill Gates and Paul Allen famously programmed the Altair 8800 and started Microsoft. But at some point, the hardware becomes limited by how effectively you can input the software. After upgrading the RAM, I quickly felt constrained by how long it took to program everything.
You can continue to program the computer physically if you want and even after upgrading that option is still available, so this step is optional. There's probably many ways to approach the programming, but this way felt simple and in the spirit of the build. We'll use an Arduino Mega 2560, like the one in Ben's 6502 build, to program the RAM. We'll start with a homemade assembler then switch to something more robust.
Preparing the Physical Interface
The first thing to do is prepare the CPU to be programmed by the Arduino. We already did the hard work on this in the RAM upgrade tutorial by using the bus to write to the RAM and disconnecting the control ROM while in program mode. Now we just need to route the appropriate lines to a convenient spot on the board to plug the Arduino into.
  1. This is optional, but I rewired all the DIP switches to have ground on one side, rather than alternating sides like Ben's build. This just makes it easier to route wires.
  2. Wire the 8 address lines from the DIP switch, connecting the side opposite to ground (the one going to the chips) to a convenient point on the board. I put them on the far left, next to the address LEDs and above the write button circuit.
  3. Wire the 8 data lines from the DIP switch, connecting the side opposite to ground (the one going to the chips) directly below the address lines. Make sure they're separated by the gutter so they're not connected.
  4. Wire a line from the write button to your input area. You want to connect the side of the button that's not connected to ground (the one going to the chip).
So now you have one convenient spot with 8 address lines, 8 data lines, and a write line. If you want to get fancy, you can wire them into some kind of connector, but I found that ribbon jumper cables work nicely and keep things tidy.
The way we'll program the RAM is to enter program mode and set all the DIP switches to the high position (e.g., 11111111). Since the switches are upside-down, this means they'll all be disconnected and not driving to ground. The address and write lines will simply be floating and the data lines will be weakly pulled up by 1k resistors. Either way, the Arduino can now drive the signals going into the chips using its outputs.
Creating the Arduino Programmer
Now that we can interface with an Arduino, we need to write some software. If you follow Ben's 6502 video, you'll have all the knowledge you need to get this working. If you want some hints and code, see below (source code):
  1. Create arrays for your data and address lines. For example: const char ADDRESS_LINES[] = {39, 41, 43, 45, 47, 49, 51, 53};. Create your write line with #define RAM_WRITE 3.
  2. Create functions to enable and disable your address and data lines. You want to enable them before writing. Make sure to disable them afterward so that you can still manually program using DIP switches without disconnecting the Arduino. The code looks like this (just change INPUT to OUTPUT accordingly): for(int n = 0; n < 8; n += 1) { pinMode(ADDRESS_LINES[n], OUTPUT); }
  3. Create a function to write to an address. It'll look like void writeData(byte writeAddress, byte writeData) and basically use two loops, one for address and one for data, followed by toggling the write.
  4. Create a char array that contains your program and data. You can use #define to create opcodes like #define LDA 0x01.
  5. In your main function, loop through the program array and send it through writeData.
With this setup, you can now load multi-line programs in a fraction of a second! This can really come in handy with debugging by stress testing your CPU with software. Make sure to test your setup with existing programs you know run reliably. Now that you have your basic setup working, you can add 8 additional lines to read the bus and expand the program to let you read memory locations or even monitor the running of your CPU.
Making an Assembler
The above will serve us well but it's missing a key feature: labels. Labels are invaluable in assembly because they're so versatile. Jumps, subroutines, variables all use labels. The problem is that labels require parsing. Parsing is a fun project on the road to a compiler but not something I wanted to delve into right now--if you're interested, you can learn about Flex and Bison. Instead, I found a custom assembler that lets you define your CPU's instruction set and it'll do everything else for you. Let's get it setup:
  1. If you're on Windows, you can use the pre-built binaries. Otherwise, you'll need to install Rust and compile via cargo build.
  2. Create a file called 8bit.cpu and define your CPU instructions (source code). For example, LDA would be lda {address} -> 0x01 @ address[7:0]. What's cool is you can also now create the instruction's immediate variant instead of having to call it LDI: lda #{value} -> 0x05 @ value[7:0].
  3. You can now write assembly by adding #include "8bit.cpu" to the top of your code. There's a lot of neat features so make sure to read the documentation!
  4. Once you've written some assembly, you can generate the machine code using ./customasm yourprogram.s -f hexc -p. This prints out a char array just like our Arduino program used!
  5. Copy the char array into your Arduino program and send it to your CPU.
At this stage, you can start creating some pretty complex programs with ease. I would definitely play around with writing some larger programs. I actually found a bug in my hardware that was hidden for a while because my programs were never very complex!

Step 2: Expand the Control Lines (Image)

Before we can expand the CPU any further, we have to address the fact we're running out of control lines. An easy way to do this is to add a 3rd 28C16 ROM and be on your way. If you want something a little more involved but satisfying, read on.
Right now the control lines are one hot encoded. This means that if you have 4 lines, you can encode 4 states. But we know that a 4-bit binary number can encode 16 states. We'll use this principle via 74LS138 decoders, just like Ben used for the step counter.
Choosing the Control Line Combinations
Everything comes with trade-offs. In the case of combining control lines, it means the two control lines we choose to combine can never be activated at the same time. We can ensure this by encoding all the inputs together in the first 74LS138 and all the outputs together in a second 74LS138. We'll keep the remaining control lines directly connected.
Rewiring the Control Lines
If your build is anything like mine, the control lines are a bit of a mess. You'll need to be careful when rewiring to ensure it all comes back together correctly. Let's get to it:
  1. Place the two 74LS138 decoders on the far right side of the breadboard with the ROMs. Connect them to power and ground.
  2. You'll likely run out of inverters, so place a 74LS04 on the breadboard above your decoders. Connect it to power and ground.
  3. Carefully take your inputs (MI, RI, II, AI, BI, J) and wire them to the outputs of the left 74LS138. Do not wire anything to O0 because that's activated by 000 which won't work for us!
  4. Carefully take your outputs (RO, CO, AO, EO) and wire them to the outputs of the right 74LS138. Remember, do not wire anything to O0!
  5. Now, the 74LS138 outputs are active low, but the ROM outputs were active high. This means you need to swap the wiring on all your existing 74LS04 inverters for the LEDs and control lines to work. Make sure you track which control lines are supposed to be active high vs. active low!
  6. Wire E3 to power and E2 to ground. Connect the E1 on both 138s together, then connect it to the same line as OE on your ROMs. This will ensure that the outputs are disabled when you're in program mode. You can actually take off the 1k pull-up resistors from the previous tutorial at this stage, because the 138s actively drive the lines going to the 74LS04 inverters rather than floating like the ROMs.
At this point, you really need to ensure that the massive rewiring job was successful. Connect 3 jumper wires to A0-A2 and test all the combinations manually. Make sure the correct LED lights up and check with a multimeteoscilloscope that you're getting the right signal at each chip. Catching mistakes at this point will save you a lot of headaches! Now that everything is working, let's finish up:
  1. Connect A0-A2 of the left 74LS138 to the left ROM's A0-A2.
  2. Connect A0-A2 of the right 74LS138 to the right ROM's A0-A2.
  3. Distribute the rest of the control signals across the two ROMs.
Changing the ROM Code
This part is easy. We just need to update all of our #define with the new addresses and program the ROMs again. For clarity that we're not using one-hot encoding anymore, I recommend using hex instead of binary. So instead of #define MI 0b0000000100000000, we can use #define MI 0x0100, #define RI 0x0200, and so on.
Expanding the control lines required physically rewiring a lot of critical stuff, so small mistakes can creep up and make mysterious errors down the road. Write a program that activates each control line at least once and make sure it works properly! With your assembler and Arduino programmer, this should be trivial.
Bonus: Adding B Register Output
With the additional control lines, don't forget you can now add a BO signal easily which lets you fully use the B register.

Step 3: Add a Stack (Image 1, Image 2)

Adding a stack significantly expands the capability of the CPU. It enables subroutines, recursion, and handling interrupts (with some additional logic). We'll create our stack with an 8-bit stack pointer hard-coded from $0100 to $01FF, just like the 6502.
Wiring up the Stack Pointer
A stack pointer is conceptually similar to a program counter. It stores an address, you can read it and write to it, and it increments. The only difference between a stack pointer and a program counter is that the stack pointer must also decrement. To create our stack pointer, we'll use two 74LS193 4-bit up/down binary counters:
  1. Place a 74LS00 NAND gate, 74LS245 transceiver, and two 74LS193 counters in a row next to your output register. Wire up power and ground.
  2. Wire the the Carry output of the right 193 to the Count Up input of the left 193. Do the same for the Borrow output and Count Down input.
  3. Connect the Clear input between the two 193s and with an active high reset line. The B register has one you can use on its 74LS173s.
  4. Connect the Load input between the two 193s and to a new active low control line called SI on your 74LS138 decoder.
  5. Connect the QA-QD outputs of the lower counter to A8-A5 and the upper counter to A4-A1. Pay special attention because the output are in a weird order (BACD) and you want to make sure the lower A is connected to A8 and the upper A is connected to A4.
  6. Connect the A-D inputs of the lower counter to B8-B5 and the upper counter to B4-B1. Again, the inputs are in a weird order and on both sides of the chip so pay special attention.
  7. Connect the B1-B8 outputs of the 74LS245 transceiver to the bus.
  8. On the 74LS245 transceiver, connect DIR to power (high) and connect OE to a new active low control line called SO on your 74LS138 decoder.
  9. Add 8 LEDs and resistors to the lower part of the 74LS245 transceiver (A1-A8) so you can see what's going on with the stack pointer.
Enabling Increment & Decrement
We've now connected everything but the Count Up and Count Down inputs. The way the 74LS193 works is that if nothing is counting, both inputs are high. If you want to increment, you keep Count Down high and pulse Count Up. To decrement, you do the opposite. We'll use a 74LS00 NAND gate for this:
  1. Take the clock from the 74LS08 AND gate and make it an input into two different NAND gates on the 74LS00.
  2. Take the output from one NAND gate and wire it to the Count Up input on the lower 74LS193 counter. Take the other output and wire it to the Count Down input.
  3. Wire up a new active high control line called SP from your ROM to the NAND gate going into Count Up.
  4. Wire up a new active high control line called SM from your ROM to the NAND gate going into Count Down.
At this point, everything should be working. Your counter should be able to reset, input a value, output a value, and increment/decrement. But the issue is it'll be writing to $0000 to $00FF in the RAM! Let's fix that.
Accessing Higher Memory Addresses
We need the stack to be in a different place in memory than our regular program. The problem is, we only have an 8-bit bus, so how do we tell the RAM we want a higher address? We'll use a special control line to do this:
  1. Wire up an active high line called SA from the 28C16 ROM to A8 on the Cypress CY7C199 RAM.
  2. Add an LED and resistor so you can see when the stack is active.
That's it! Now, whenever we need the stack we can use a combination of the control line and stack pointer to access $0100 to $01FF.
Updating the Instruction Set
All that's left now is to create some instructions that utilize the stack. We'll need to settle some conventions before we begin:
If you want to add a little personal flair to your design, you can change the convention fairly easily. Let's implement push and pop (source code):
  1. Define all your new control lines, such as #define SI 0x0700 and #define SO 0x0005.
  2. Create two new instructions: PSH (1011) and POP (1100).
  3. PSH starts the same as any other for the first two steps: MI|CO and RO|II|CE. The next step is to put the contents of the stack pointer into the address register via MI|SO|SA. Recall that SA is the special control line that tells the memory to access the $01XX bank rather than $00XX.
  4. We then take the contents of AO and write it into the RAM. We can also increment the stack pointer at this stage. All of this is done via: AO|RI|SP|SA, followed by TR.
  5. POP is pretty similar. Start off with MI|CO and RO|II|CE. We then need to take a cycle and decrement the stack pointer with SM. Like with PSH, we then set the address register with MI|SO|SA.
  6. We now just need to output the RAM into our A register with RO|AI|SA and then end the instruction with TR.
  7. Updating the assembler is easy since neither instruction has operands. For example, push is just psh -> 0x0B.
And that's it! Write some programs that take advantage of your new 256 byte stack to make sure everything works as expected.

Step 4: Add Subroutine Instructions (Image)

The last step to complete our stack is to add subroutine instructions. This allows us to write complex programs and paves the way for things like interrupt handling.
Subroutines are like a blend of push/pop instructions and a jump. Basically, when you want to call a subroutine, you save your spot in the program by pushing the program counter onto the stack, then jumping to the subroutine's location in memory. When you're done with the subroutine, you simply pop the program counter value from the stack and jump back into it.
We'll follow 6502 conventions and only save and restore the program counter for subroutines. Other CPUs may choose to save more state, but it's generally left up to the programmer to ensure they're not wiping out states in their subroutines (e.g., push the A register at the start of your subroutine if you're messing with it and restore it before you leave).
Adding an Extra Opcode Line
I've started running low on opcodes at this point. Luckily, we still have two free address lines we can use. To enable 5-bit opcodes, simply wire up the 4Q output of your upper 74LS173 register to A7 of your 28C16 ROM (this assumes your opcodes are at A3-A6).
Updating the ROM Writer
At this point, you simply need to update the Arduino writer to support 32 instructions vs. the current 16. So, for example, UCODE_TEMPLATE[16][8] becomes UCODE_TEMPLATE[32][8] and you fill in the 16 new array elements with nop. The problem is that the Arduino only has so much memory and with the way Ben's code is written to support conditional jumps, it starts to get tight.
I bet the code can be re-written to handle this, but I had a TL866II Plus EEPROM programmer handy from the 6502 build and I felt it would be easier to start using that instead. Converting to a regular C program is really simple (source code):
  1. Copy all the #define, global const arrays (don't forget to expand them from 16 to 32), and void initUCode(). Add #include and #include to the top.
  2. In your traditional int main (void) C function, after initializing with initUCode(), make two arrays: char ucode_upper[2048] and char ucode_lower[2048].
  3. Take your existing loop code that loops through all addresses: for (int address = 0; address < 2048; address++).
  4. Modify instruction to be 5-bit with int instruction = (address & 0b00011111000) >> 3;.
  5. When writing, just write to the arrays like so: ucode_lower[address] = ucode[flags][instruction][step]; and ucode_upper[address] = ucode[flags][instruction][step] >> 8;.
  6. Open a new file with FILE *f = fopen("rom_upper.hex", "wb");, write to it with fwrite(ucode_upper, sizeof(char), sizeof(ucode_upper), f); and close it with fclose(f);. Repeat this with the lower ROM too.
  7. Compile your code using gcc (you can use any C compiler), like so: gcc -Wall makerom.c -o makerom.
Running your program will spit out two binary files with the full contents of each ROM. Writing the file via the TL866II Plus requires minipro and the following command: minipro -p CAT28C16A -w rom_upper.hex.
Adding Subroutine Instructions
At this point, I cleaned up my instruction set layout a bit. I made psh and pop 1000 and 1001, respectively. I then created two new instructions: jsr and rts. These allow us to jump to a subroutine and returns from a subroutine. They're relatively simple:
  1. For jsr, the first three steps are the same as psh: MI|CO, RO|II|CE, MI|SO|SA.
  2. On the next step, instead of AO we use CO to save the program counter to the stack: CO|RI|SP|SA.
  3. We then essentially read the 2nd byte to do a jump and terminate: MI|CO, RO|J.
  4. For rts, the first four steps are the same as pop: MI|CO, RO|II|CE, SM, MI|SO|SA.
  5. On the next step, instead of AI we use J to load the program counter with the contents in stack: RO|J|SA.
  6. We're not done! If we just left this as-is, we'd jump to the 2nd byte of jsr which is not an opcode, but a memory address. All hell would break loose! We need to add a CE step to increment the program counter and then terminate.
Once you update the ROM, you should have fully functioning subroutines with 5-bit opcodes. One great way to test them is to create a recursive program to calculate something--just don't go too deep or you'll end up with a stack overflow!


And that's it! Another successful upgrade of your 8-bit CPU. You now have a very capable machine and toolchain. At this point I would have a bunch of fun with the software aspects. In terms of hardware, there's a number of ways to go from here:
  1. Interrupts. Interrupts are just special subroutines triggered by an external line. You can make one similar to how Ben did conditional jumps. The only added complexity is the need to load/save the flags register since an interrupt can happen at any time and you don't want to destroy the state. Given this would take more than 8 steps, you'd also need to add another line for the step counter (see below).
  2. ROM expansion. At this point, address lines on the ROM are getting tight which limits any expansion possibilities. With the new approach to ROM programming, it's trivial to switch out the 28C16 for the 28C256 that Ben uses in the 6502. These give you 4 additional address lines for flags/interrupts, opcodes, and steps.
  3. LCD output. At this point, adding a 16x2 character LCD like Ben uses in the 6502 is very possible.
  4. Segment/bank register. It's essentially a 2nd memory address register that lets you access 256-byte segments/banks of RAM using bank switching. This lets you take full advantage of the 32K of RAM in the Cypress chip.
  5. Fast increment instructions. Add these to registers by replacing 74LS173s with 74LS193s, allowing you to more quickly increment without going through the ALU. This is used to speed up loops and array operations.
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Miller, John Oberdiek - Civil Wrongs and Justice in Private Law - Oxford University Press(self) 8 [BOOK] Fateful Triangle: How China Shaped U.S.-India Relations During the Cold War by TANVI MADAN(self) 1 [BOOK] Tooth preparations: science & art (Clovis Pagani)(self) 4 [Book] (Taylor&Francis) Human Variation: Races, Types, and Ethnic Groups by Stephen Molnar(self) 1 [Article] Surgical techniques for adrenal tumors(self) 2 [Article] Three articles from ashpublications needed!(self) 1 [Book] The SCOPUS Diaries and the (il)logics of Academic Survival(self) 6 [Article] Untangling constructivism, knowledge, and knowledge-building for “future-oriented” teaching Author(s): Jane Gilbert(self) 1 [BOOK] Sentenciando Tráfico - Marcelo Semer(self) 4 [Book] Believing History: Latter-day Saint Essays(self) 1 [Book]Book of Mormon Authorship Revisited: The Evidence for Ancient Origins(self) 1 [Book] Genres Across the disciplines: Student writing in higher education(self) 1 [Chapter] William Ophuls, "Leviathan or Oblivion?" in Toward a Steady-state Economy edited by Herman E. Daly(self) 1 [BOOK] 99 Tips for Creating Simple and Sustainable Educational Videos(self) 6 [Book] Taylor, Christopher 2018 Empire of Neglect: The West Indies in the Wake of British Liberalism. Duke University Press.(self)NSFW 1 [Book] The emporium of the world : maritime Quanzhou1000-1400 , by Angela Schottenhammer, Leiden : Brill, 2001(self) 2 [Article] PRRT in high-grade gastroenteropancreatic neuroendocrine neoplasms (WHO G3)(self) 1 [Book] The art of strict musical composition, by Johann Philipp Kirnberger, tr. David Beach and Jurgen Thym(self) 1 [Book] (request) Primate Evolution and Human Origins By Russell L. Ciochon & Fleagle(self) 10 [Book] (T&F) Sikhs in Asia Pacific by Swarn Singh Kahlon(self) 4 [Book] (T&F) Nation-state and Minority Rights in India by Tanweer Fazal(self) 5 [Book] The Path of Genocide: The Rwanda Crisis from Uganda to Zaire - Astri Suhrke(self) 2 [Article] Intergenerational social mobility and religious ecology: Disaggregating the conservative Protestant bloc(self) 3 [Book] ASTM E2847 - 14; Standard Test Method for Calibration and Accuracy Verification of Wideband Infrared Thermometers(self) 1 [Article] Country Life issue 86, from October 1939(self) 1 [Book] Understanding the Dairy Cow by John Webster(self) 4 [Article] The Struggle over Structural Adjustment: Socialist Revolution versus Capitalist Counterrevolution in Yugoslavia and the World by Johanna Bockman(self) 4 [Book] Shadowland : from Jeffrey Epstein to the Clintons, from Obama and Biden to the occult elite, exposing the deep-state actors at war with Christianity, Donald Trump, and America's destiny(self) 1 [Book] Refugee conversations by Bertold Brecht(self) 1 [Article] (requested) Alan Crozier, Beyond the Metaphor: Cursing and Swearing in Ulster, in MALEDICTA X, at 115, 122 (1988-89)(self) 3 [Book] A Greek-English Lexicon of the New Testament and Other Early Christian Literature, 3rd Edition(self) 4 [Article] God as a White man: A psychological barrier to conceptualizing Black people and women as leadership worthy.(self) 1 [Book]The Truth about Mormonism: Illumination or Deception?(self) 3 [Book] Shorebird Ecology, Conservation, and Management(self) 10 [Chapter] De Anima et Resurrectione(self) 2 [BOOK] A Greek-English Lexicon of the New Testament and Other Early Christian Literature, 3rd Edition(self) 5 [BOOK] 'Rulers, townsmen and bazaars : North Indian society in the age of British expansion, 1770-1870' by CA Bayly(self) 1 [Book] Middleton's Allergy 2-Volume Set 9th Edition by A Wesley Burks Stephen Holgate Robyn O'Hehir Leonard Bacharier David Broide Gurjit Khurana Hershey R. Stokes Peebles, Jr.(self) 4 [BOOK] 'Islamic Psychoanalysis and Psychoanalytic Islam:Cultural and Clinical Dialogues', 2018(self) 2 [Book] Research Handbook on the Economics of Intellectual Property Law(self) 4 [Chapter] Changing Ethnolinguistic Perceptions In The South(self) 2 [Book] Ethnographic Perspectives on Academic Writing, by Brian Paltridge, Sue Starfield, and Christine M. Tardy(self) 1 [Book] N. G. L. Hammond: A history of Macedonia. Vol. I: Historical geography and prehistory. Oxford: The Clarendon Press, 1972(self) 23 [Book] (request) Evolutionary Neuropsychology: An Introduction to the Evolution of the Structures and Functions of the Human Brain by Frederick L. Coolidge(self) 5 [Book] Cultural Heritage in the European Union: A Critical Inquiry into Law and Policy(self) 7 [Book] (T&F) State Interest and the Sources of International Law by Markus P. Beham(self) 1 [book][request] The Future Belongs to the Digital Engineer: Transforming the Industry by Jim Crompton(self) 1 [book][request] Where the Action Is: The Meetings That Make or Break Your Organization by J. Elise Keith(self) 1 [book][request] Work Smarter: Live Better: Practical Ways to Change Your Work Habits and Transform Your Life by Cyril Peupion(self) 2 [book][request] Bits, Bytes, and Barrels: The Digital Transformation of Oil and Gas by Geoffrey Cann(self) 6 [Article] Tax Revenues and the Fiscal Cost of Trade Liberalization, 1792-2006(self) 4 [Book] (T&F) Writing Diaspora South Asian Women, Culture and Ethnicity by Yasmin Hussain(self) 4 [Article] [HeinOnline] Request(self) 4 [Book] - The Routledge International Handbook of Forensic Intelligence and Criminology(self) 2 4 [Book] Optional Processes Theory and Applications, by Mohamed Abdelghani, Alexander Melnikov(self) 4 [BOOK] Tehrangeles Dreaming: Intimacy and Imagination in Southern California's Iranian Pop Music - Farzaneh Hemmasi(self) 4 [Book] (T&F) Sikh Religion, Culture and Ethnicity by Arvind-Pal S. Mandair, Christopher Shackle, Gurharpal Singh(self) 7 [Book] Crip Times: Disability, Globalization and the Resistance - Robert McRuer (Project Muse)(self) 2 [Book] Molecular Population Genetics by Matthew W. Hahn(self) 1 [Book] Mastering A&P with Pearson eText(self) 1 [Book] Lifespan Development - Denise Roberts Boyd, Helen L Bee(self) 1 [Book] AutoLISP und ADS für AutoCAD Version 11 Hans-Peter Rust (IWT Verlag 1991)(self) 4 [Book] Sacrifice Regained: Morality and Self-Interest in British Moral Philosophy from Hobbes to Bentham(self) 2 [Article] IEEE Xplore article: Single IMU Displacement and Orientation Estimation of Human Center of Mass: A Magnetometer-Free Approach, Stefano Cardarelli(self) 4 [Chapter] 10 - Interaction in L2 Learning(self) 2 [Book] An Introduction to Astrobiology (3rd Edition), edited by David A. Rothery, Iain Gilmour, and Mark A. 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The International Journal of Psychoanalysis, 29, 114–123.(self) 6 [Book] Interaction of Media, Cognition, and Learning - Gavriel Salomon(self) 4 [Article] Oxygen and Diverse Nutrients Influence the Water Kefir Fermentation Process / Laureys D., Aerts M., Vandamme P., De Vuyst L.(self) 5 [Article] [HeinOnline] The Artificial Reason of the Law or: What Lawyers Know, by Charles Fried(self) 1 [Book] Structure And Mechanism In Protein Science: A Guide To Enzyme Catalysis And Protein Folding (Structural Biology) by Alan Fersht Reprint Edition(self) 3 [Article] Neurostimulation Therapies for Primary Headache Disorders: Present and Future(self) 3 [Article] Transcranial Direct-Current Stimulation Reduces Nociceptive Behaviour in an Orofacial Pain Model(self) 4 [Article] Characterization of Degradation Behavior for PLGA in Various pH Condition by Simple Liquid Chromatography Method Yoo, Je Young | Kim, Jong Min | Seo, Kwang Su | Jeong, Yong Kyun | Lee, Hai Bang | Khang, Gilson(self) 1 [Thesis] Winton, Douglas Walter(self) 3 [Article] Denis Muzerelle, “Dating Manuscripts: What Is at Stake in the Steps Usually (but Infrequently) Taken,”(self) 1 Needs Digitizing [ARTICLE] Francesca Ferrari - Il fatto notorio e la rete Internet(self) 1 Needs Digitizing [ARTICLE] Francesca Ferrari - Il fatto notorio e la rete Internet(self) 4 [Book] Practising Italian Grammar(self) 3 [Book] Growth, Distribution, and Prices(self) 5 [Book] Conflict and Cooperation in the Indo-Pacific New Geopolitical Realities Edited ByAsh Rossiter, Brendon J. 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Wells and Ralph Ellison: Need the Effect of One Invisible Man on Another Be Itself Invisible?"(self) 2 [Book] Industrial Ventilation: A Manual of Recommended Practice for Design 30th Edition(self) 1 [Book] Disk recording. Vol. 1-2. An anthology of articles on disk recording from the pages of the Journal of the Audio engineering society Vol. 1-Vol. 28 (1953-1980). 1(self) 1 [Book] Cityscapes of Modernity: Critical Explorations by David Frisby(self) 1 [Book] Art and the Senses | Edited by Francesca Bacci and David Melcher(self) 1 [eBook] Mastering A&P with Pearson eText(self) 1 [Book] Emotionen: Eine Einführung für beratende, therapeutische, pädagogische und soziale Berufe(self) 3 [article] Conceptualizing Behavior Disorders in Terms of Resistance to Intervention(self) 1 [ARTICLE] 'Hegel, Hinduism, and Freedom', Merold Westphal, The Owl of Minerva, Volume 20, Issue 2, Spring 1989, Pages 193-204(self) 1 [Book] Machine Learning in Chemistry(self) 1 [Book] Youth and media(self) 7 1 [Article] The Beneficial Effect of Physical Exercise on Inflammatory Makers in Older Individuals Endocr Metab Immune Disord Drug Targets. 2020 Jun 6. Pablo Gómez-Rubio, Isabel Trapero(self) 2 [Article] On the Determination of the Number, Size, Spacing, and Volume Fraction of Spherical Second-Phase Particles from Extraction Replicas(self) 5 [Book] Remington and Klein's Infectious Diseases of the Fetus and Newborn Infant 8th Edition by Christopher Wilson Victor Nizet Yvonne Maldonado Jack Remington Jerome Klein(self) 1 [Other] (Monthly Newspaper in France) Le Monde Diplomatique (English Edition) June 2020.(self) 1 [Other] (Monthly Newspaper in France) Le Monde Diplomatique (English Edition) May 2020.(self) 1 [BOOK] Crime and Markets - Vincenzo Ruggiero(self) 2 [Book] The Search for Meaning by Dennis Ford(self) 1 [Book] The Acts of Jesus: What Did Jesus Really Do?(self) 1 [Chapter] Gustav Mahler, the Wunderhorn years: chronicles and commentaries Vol. 2 -- pp. 408-410(self) 4 [Article] [Heinonline] 2 old Articles from the African Journal of International and Comparative Law(self) 4 [ARTICLE] 'Ways of Prediction, Ways of Rhetoric' Philippe-Joseph Salazar, Philosophy & Rhetoric Vol. 50, No. 4 (2017), pp. 390-408(self) 1 [Article] [Needs Digitizing] Wells, J. C. (1986). A standardized machine-readable phonetic notation. In Conference Publication No. 258. International Conference on Speech Input / Output; Techniques and Applications, 24–26 March 1986. London: Institute of Electrical Engineers, 134–137.(self) 4 [Book] (BRILL) Indian Diaspora: Voices of the Diasporic Elders in Five Countries(self) 1 [BOOK] 'Hegel, freedom, and modernity' by Merold Westphal, 1992(self) 1 [Supplement] Panza MJ, Graupensperger S, Agans JP, Doré I, Vella SA, Evans MB. Adolescent sport participation and symptoms of anxiety and depression: a systematic review and meta-analysis. Journal of sport and exercise psychology. 2020 May 21;42(3):201-18.(self) 2 [Article] Cooley at al. (2019). Complex intersections of race and class: Among social liberals, learning about White privilege reduces sympathy, increases blame, and decreases external attributions for White people struggling with poverty(self) 4 [Book] [Brill] Resolving Conflicts in the Law : Essays in Honour of Lea Brilmayer(self) 1 [Book] Master Medicine: General and Systematic Pathology 3rd Edition(self) 4 [book] Islamic Societies to the Nineteenth Century - A Global History by Ira M. Lapidus(self) 4 [Article] [Heinonline] Conflicts between the International Tribunal for the Law of the Sea and the International Court of Justice by Tullio Treves(self) 3 [Book] Encyclopedia of Autism Spectrum Disorders(self) 1 [BOOK] 'Wrestling with Archons: Gnosticism as a Critical Theory of Culture' by JONATHAN CAHANA-BLUM, 2018(self) 1 [Other] XXI Century | Bullfrog Films(self) 4 [BOOK] The Oxford Handbook of Ethics of AI(self) 4 [Book] Figures of Southeast Asian Modernity (JSTOR) by Barker, Harms, & Linduiqst(self) 7 [Book] Health Informatics: An Interprofessional Approach, 2nd Edition(self) 2 [Article] Rapport and friendship in ethnographic research(self) 4 [BOOK] 'Žižek on race: Toward an Anti-Racist Future' by Zahi Zalloua, Bloomsbury, 2020(self) 3 [BOOK] Classical Antiquity in Video Games by Christian Rollinger(self) 1 [Thesis] Sandro, Paolo - Creation and application of law: a neglected distinction. ERA - Edinburgh(self) 3 [Article] belated: interruption(self) 4 [Article] Reusable and Recyclable Graphene Masks with Outstanding Superhydrophobic and Photothermal Performances(self) 8 [Article] Randomized Algorithms in Number Theory(self) 4 [Book] The Routledge Companion to Digital Humanities and Art History(self) 5 [Article] Regulatory cell therapy in kidney transplantation (The ONE Study): a harmonised design and analysis of seven non-randomised, single-arm, phase 1/2A trials by Sawitzki et al.(self) 0 1 [Book] Asian Freedoms: The Idea of Freedom in East and Southeast Asia (Cambridge), eds. David Kelly & Anthony Reid(self) 2 [Article] Local Mitochondrial ATP Production Regulates Endothelial Fatty Acid Uptake and Transport, by A. Ibrahim N. Yucel B. Kim Z. Arany(self) 4 [Chapter] Modeling Liquid–Liquid Extraction for Critical Elements Separations: An overview, (Chukwunwike O. Iloeje, 2020).(self) 6 [Article] Electrical stimulation in white oyster mushroom (Pleurotus florida) production, by I. Roshita, K. M. P. Nurfazira, C. Shi Fern, and M. S. Nur Ain(self) 1 [Book] Screen Adaptation: Impure Cinema by Deborah Cartmell and Imelda Whelehan(self) 4 [Book] Earth’s Insights (Callicott 1997)(self) 1 [Book] Viscosity of Pure Organic Liquids and Binary Liquid Mixtures 2017(self) 2 [BOOK] Needed: A comprehensive etymological dictionary of the Hebrew language for readers of English(self) 1 [Book] Hydrothermal chemistry of zeolites(self) 5 [Chapter] 2 chapters from A History of the United States Author: Philip Jenkins 3. Expansion and Crisis, 1825–65 6. Expansion and Crisis, 1825–65(self) 4 [Chapter] 8. The Fall of Actually Existing Socialism Authors: Prof. Geoffrey Swain, Dr. Nigel Swain(self) 5 [article] Sci-Hub didn't work for this article so I hope someone could help me !(self) 4 [Book] Evil Men, James Dawes(self) 1 [Chapter] from the book The Versailles Settlement Peacemaking after the First World War, 1919-1923 by Alan Sharp chapter 2. The Paris Peace Conference chapter 3. The League of Nations(self) 2 [Book] Macroeconomics(self) 1 [Article] "Eleutherna, the Orthi Petra Necropolis: Slewn by the Iron" by Nicholas Chr. Stampolidis.(self) 3 [Book] Contemporary Linguistics(self) 4 [Article](http://www.eurekaselect.com/137993/article)(self) 1 [Article](http://www.eurekaselect.com/137993/article)(self) 3 [Book] Chemistry: An Introduction to General, Organic, and Biological Chemistry(self) 1 [BOOK] Mastering Chemistry eBook(self) 3 [Book] The Oxford Handbook of Sovereign Wealth Funds(self) 1 [Book] "Marx, Marxism and Utopia" by Darren Webb (2000)(self) 5 [Article] "Law and Society", by Joachim J. Savelsberg, Lara L. Cleveland, in Oxford Bibliographies in Sociology(self) 2 [BOOK] Encouraging Pro-Environmental Behaviour - What Works, What Doesn't, and Why (2019)(self) 1 [BOOK] ''Guide for the economic design of circular metal silos'' by J.M. Rotter(self) 3 [BooK](JSTOR) The Evolved Apprentice: How Evolution Made Humans Unique by Kim Sterelny(self) 13 [Article] Matthews, Graham 2020 Pandemic, recession...: Capitalism is a Sick System. Green Left Weekly 1257, 2020.(self) 1 [BOOK]A comprehensive etymological dictionary of the Hebrew language for readers of English(self) 1 [Article] Sound Levels in Nursing Homes by Laura L. Joosse(self) 1 [Book] China Upside Down: Currency, Society, and Ideologies, 1808–1856 by Man-houng Lin(self) 3 [Book] The SAGE Handbook of Propaganda (2019)(self) 1 [BOOK] 'Lacan and Religion', by Aron Dunlap, Routledge, 2016(self) 2 [Book] Making It in the Market: Richard Ney's Low-Risk System for Stock Market Investors(self) 1 [Book] Comprendre les langues romanes(self) 1 [book] Derecho romano clásico, Betancourt(self) 6 [Book] The Oxford Handbook of Information Structure (2016)(self) 1 [book] pls help me find Physiotherapy in mental health and psychiatry(self) 4 [Article] Denationalization by Sir John Fischer Williams(self) 1 [BOOK] Statistical Methods for the Social and Behavioural Sciences - A Model-Based Approach (David B. Flora)(self) 1 [ARTICLE] Care as a Political Concept by Joan C. Tronto(self) 1 [Chapter] Agnieszka Uberman "English and Polish figurative language employing components of the frame of death" Cognitive Linguistics in the Year 2017. Peter Lang(self) 1 [book] Petroleum Contracts and International Law by Rudolf Dolzer(self) 1 [Book] A Short History of Persian Literature At the Bahmanī, the ‘Ādilshāhī and the Qutbshāhī Courts – Deccan(self) 4 [Book] A Japanese Advertising Agency: An Anthropology of Media and Markets (Routledge) by Brian Moeran(self) 1 [Book] The Way of Synthesis: Evolution of Design and Methods for Natural Products(self) 1 [book] ما في القرآن الكريم - دراسة نحوية(self) 6 [Book] (JSTOR) First Peoples in a New World: Colonizing Ice Age America by David J. Meltzer(self)
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Временно бесплатные курсы Udemy

Временно бесплатные курсы Udemy

Подборка временно бесплатных курсов Udemy.122 шт. Промокоды, вшиты в ссылки.Все курсы на английском.

  1. Agile Retrospective: Continuous Improvement + Kaizen Wth Scrum
  2. Artificial Intelligence Concepts - AI 101
  3. Build Interactive Apps Using VueJS, Vuex And VueRouter
  4. C Programming 2019
  5. CloverETL Data Integration
  6. Create A SHMUP With Unity 3D
  7. Google Cloud Platform Associate Cloud Engineer Practice Test
  8. How To Create Android Apps Without Coding Advance Course
  9. How to Install Linux Mint (Cinnamon) on a Virtual Machine
  10. How to Install Ubuntu Linux on a Virtual Machine
  11. How To Uv Unwrap Models In Blender
12. Introduction To SAS
13. iOS 12 Chat Application Like WhatsApp And Viber
14. iOS App Grocery List (Swift 3.1, iOS10.3) From 0 To AppStore
  1. iOS12 Animations, Learn Swift Animation With UIKit
16. iOS12 Bootcamp From Beginner To Professional iOS Developer
  1. JavaScript & LeetCode | The Ultimate Interview Bootcamp
  2. Learn Angular 8 By Creating A Simple Full Stack Web App
  3. Learn How To Make Trading Card Game Menus With Unity 3D
20. Learn React JS And Web API By Creating A Full Stack Web App
  1. Learn To Code Trading Card Game Battle System With Unity 3D
  2. Learn To Code With Python 3!
  3. Linux For Absolute Beginners!
  4. Linux Shell Terminal Command Basics
  5. Machine Learning iOS 11
  6. MapReduce Architecture For Big Data
  7. QuickChat 2.0 (WhatsApp Like Chat) iOS10 And Swift 3
  8. Random Forest Algorithm In Machine Learning
  9. Scrum Advanced: Software Development & Program Management
  10. Scrum Certification Prep + Scrum Master + Agile Scrum Training
  11. Simple And Advanced Topics Of Animating 2D Characters
  12. SSL Complete Guide: HTTP To HTTPS
  13. Start your own online store now for FREE
  14. Swift Weather (Meteorology) Application With REST API
  15. The Complete jQuery Course 2019: Build Real World Projects!
  16. Understanding On Google Charts
  17. User Stories For Agile Scrum + Product Owner + Business Analysis
  18. WP Plugin Development - Build Your Own Plugin!
  19. Double Your Office Productivity Using Google Apps
  20. How to become a much better & safer driver & avoid accidents
  21. Leadership Wisdom - Advanced Leadership Strategies
  22. Use your perfectionism to be more successful at work
  23. 3D Animation Film-Making With Plotagon: Ultra-Speed 2019 Design
  24. Blender Beginners Guide To 3D Modeling Game Asset Pipeline Design
  25. Citrix 1Y0-371 Designing Deploying Managing Citrix Exam IT & Software
  26. Complete Whiteboard Video Creation With VideoScribe: 2019 Design
  27. Create Lightning Fast Videos With InVideo: AI Video Making Design
  28. Learn Cinema 4D: Low Poly Tree Design
  29. Learn Illustrator CC: Create Simple Flat Vector Characters Design
  30. The Illustration Masterclass Design
  31. The Open Source Multimedia Masterclass Design
  32. Camtasia Studio 9: Become a Video Editing Guru With Camtasia
  33. 10 Copywriting Hacks That Work In 2019
  34. 10 Facebook Marketing Hacks That Work In 2019
  35. Certified Facebook Marketing 2019 (Complete Masterclass)
  36. Certified Network Marketer (Network Marketing & MLM Mastery)
  37. ClickBank Affiliate Marketing Secrets Home Business Success
  38. ClickBank Affiliate Marketing: NO Cost, No Website - Proven
  39. Competitor Analysis Tools For 2019: Part 1
  40. Digital Marketing Secrets For Beginners
  41. Email Blasting For Commissions [CPA & Affiliate Marketing]
  42. Email Marketing Mastery to Earn More & Build a Huge List
63. Facebook Ads 101. Complete Facebook Ads & Marketing Course
  1. Facebook Marketing: Advanced Targeting Strategies
  2. Facebook Marketing: How To Build A List With Lead Ads
  3. Facebook Marketing: How To Build A Targeted Email List
  4. Fraud Analytics Using R & Microsoft Excel
  5. Gamification: Use Gamification In Marketing
  6. Google Analytics For Beginners 2019
  7. Google Analytics For WordPress to Track Your Website Traffic
  8. Home Business: CPA Marketing From Scratch
  9. How To Get Your First 1,000 Facebook Fans: For Beginners
  10. How To Promote CPA Offers With Bing Ads
  11. Influencer Content Marketing: Killer Tactics For 2019
  12. Instagram Marketing Growth Tips [Influencer Shortcuts]
  13. Marketing Analytics Using R And Excel
  14. Master ClickFunnels & Create Sales Funnels Like a Boss
  15. Modern Social Media Marketing - Complete Certificate Course
  16. Powerpoint 4 Video Part A - Introduction + Character Animation
  17. Secrets Exposed: Find The Most Profitable Niches Of 2019
  18. Talking Robots: Artificial Intelligence Audiobook Creation
  19. The Complete Social Media Marketing Agency Masterclass
  20. VideoScribe: Whiteboard Animation From Zero To Hero
  21. VideoScribe Whiteboard Animation: Create Amazing Promo Video
  22. Viral Content Buzz - Killer Tactics For Blog Promotions
  23. YouTube Creator Tips [Grow A Channel-Get More Subs & Views]
  24. Youtube SEO Course: How TO Rank # 1 On YouTube In 2019
  25. YouTube Video Marketing For Domination: ViralNomics 2019
  26. Artificial Intelligence Music Creation & Remixing 2019
  27. STRUMMING SIMPLIFIED: 51 Guitar Rhythms For All Styles!
  28. Agile Project Management: Scrum Step By Step With Examples
  29. Amazon Dropship Mastery
  30. Amazon FBA Tycoon - The Ultimate Private Label Masterclass
  31. Artificial Intelligence And Predictive Analysis Using Python
  32. Binary Options Trading Ninja: The Bandit Strategy
  33. Bitcoin Valuation: Methods And Frameworks
  34. Business Education: Guide To Blockchain And Cryptocurrencies
  35. Certified Network Marketer (Network Marketing & MLM Mastery)
  36. ClickBank Affiliate Marketing Secrets Home Business Success
  37. Dropshipping With WordPress: Create A Dropship Business Fast
  38. eCommerce Business: Set Up Your Own Business From Home
  39. Entrepreneurship: Complete Guide To Business Model Creation
  40. Entrepreneurship Bootcamp: Create Work At Home Business
  41. Entrepreneurship Tips For Success
  42. Futures Trading Ninja: DIY Futures Trading Course (12 Hour)
  43. Gamification: Use Gamification In Marketing
  44. Home Business: CPA Marketing From Scratch
  45. How To Be Lucky In Business And Life
  46. Lean Six Sigma Applications In Information Technology
  47. Online Business: How I Make 5 Figure Passive Income on JVZoo
  48. Pandas With Python Tutorial
  49. Personal / Business Networking Skills For Maximum Success!
  50. Project Management: Deliver On Time + Scrum Project Delivery
  51. Scrum Master Training: Case Studies And Confessions
  52. Start Making Passive Income Online: The Complete Bundle
  53. The BeLive Studio2 Course For Live Broadcasters
  54. The Complete Personal Productivity Course - Business & Life
  55. Transformational Leadership - Ultimate Leadership Course
  56. Ultimate Time Management - BEST Time Management Course
  57. User Stories For Agile Scrum + Product Owner + Business Analysis
  58. Your Complete Guide To Agile, Scrum, Kanban
  59. Your Ultimate Blueprint To Sell Products Online

Источник: Телеграм-канал WScoupon
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Joe Walsh Will Not Save Us (G-File)

Dear Reader (including the poor Biden staffers who have to white-knuckle their armrests when not sucking down unfiltered Marlboros every time Joe Biden gives an interview),
If you’ve never heard the Milton Friedman shovels and spoons story, you will (and I don’t just mean here). Because everyone on the right tells some version of it at some point. The other Uncle Miltie (i.e., not the epically endowed comedic genius) goes to Asia or Africa or South America and is taken on a tour of some public works project in a developing country. Hundreds of laborers are digging with shovels. Milton asks the official in charge something like, “Why use shovels when earth moving equipment would be so much more efficient?”
The official replies that this is a jobs program and using shovels creates more jobs.
Friedman guffaws and asks, “In that case: Why not use spoons?”
The story might not be true, but the insight is timeless.
Here’s another story: When I was in college, we were debating in intro to philosophy the differences between treating men and women “equally” versus treating them the “same.” At first blush, the two things sound synonymous, but they’re not (indeed the difference illuminates the chasm of difference between classical liberalism and socialism, but that’s a topic for another day). I pointed out that there were some firefighter programs that had different physical requirements for male applicants and female ones (this was before it was particularly controversial—outside discussions of Foucault—to assume there were clear differences between sexes). Female applicants had to complete an obstacle course carrying a 100-pound dummy, but men had to carry a 200-pound dummy, or something like that. A puckish freshperson named Jonah Goldberg said: “I don’t really care if a firefighter is a man, a woman, or a gorilla, I’d just like them to be able to rescue me from a fire.”
A woman sitting in front of me wheeled around and womansplained to me that “you can always just hire two women.”
I shot back something like, “You could also hire 17 midgets, that’s not the point.”
(I apologize for using the word midget, which wasn’t on the proscribed terms list at the time.)
But here’s the thing: Sometimes it is the point. Whether you’re talking about spoons or little people, the case for efficiency is just one case among many. Don’t get me wrong, I think it’s an important one, but it’s not the only one. Sometimes older children are told to bring their little brothers or sisters along on some trip. They’ll complain, “But they’ll just slow us down!” or, “But they aren’t allowed on the big kid rides.” Parents understand the point, but they are not prioritizing efficiency over love. Or, they’re prioritizing a different efficiency: Not being stuck with a little kid who’s crying all day because he or she was left behind.
One of my favorite scenes in the movie Searching for Bobby Fischer is when the chess tutor Bruce Pandolfini, played by Ben Kingsley, tells the chess prodigy’s parents that they have to forbid their son from playing pickup chess in the park because he learns bad chess habits there. The mom says “Not playing in the park would kill him. He loves it.”
Kingsley replies, accurately, that it “just makes my job harder.”
And the mom says, “Then your job is harder.”
I love that. I love it precisely because it recognizes that good parents recognize that there are trade-offs in life and that the best option isn’t always the most efficient one.
This is one of those places where you can see how wisdom and expertise can diverge from one another.
The Unity of Goodness
Efficiency can mean different things in different contexts. In business, it means profit maximization (or cost reduction, which is often the same thing). In sports, it means winning. Always giving the ball to the best player annoys the other players who want their own shot at glory, but so long as he can be counted on to score, most coaches will err on the side of winning. Starting one-legged players will wildly improve a basketball team’s diversity score, but it’s unlikely to improve the score that matters to coaches—or fans.
I’ve long argued that there’s something in the progressive mind that dislikes this whole line of thinking. They often tend to find the idea of trade-offs to be immoral or offensive. I call it the “unity of goodness” worldview. Once you develop an ear for it, you can hear it everywhere. “I refuse to believe that economic growth has to come at the expense of the environment.” “There’s no downside to putting women in combat.” “I don’t want to live in a society where families have to choose between X and Y,” or “I for one reject the idea that we have to sacrifice security for freedom—or freedom for security.” Both Bill Clinton and Barack Obama were masters at declaring that all hard choices were “false choices”—as if only mean-spirited people would say you can’t have your cake and eat it too.
Saint Greta
Nowhere is this mindset more on display in environmentalism. Everyone hawking the Green New Deal insists that it’s win-win all the way down. It’s Bastiat’s broken window parable on an industrialized scale. Spending trillions to switch to less efficient forms of energy will boost economic growth and create jobs, they insist. I’d have much more respect for these arguments if they simply acknowledged that doing a fraction of what they want will come at considerable cost.
Consider Greta Thunberg, the latest child redeemer of the climate change movement. She hates planes because they spew CO2. That’s why she sailed from Sweden to a conference in New York. As symbolism, it worked, at least for the people who already agree with her. But in economic terms, she might as well have raised the Spoon Banner off the main mast of her multi-million-dollar craft (that may have a minimal carbon footprint now, but required an enormous carbon down-payment to create). The organizers of this stunt had to fly two people to New York to bring the ship back across the Atlantic. And scores of reporters flew across the Atlantic to cover her heroic act of self-denial. Her nautical virtue signaling came at a price.
The organizers insist that they will buy carbon offsets to compensate for the damage done. But that’s just clever accounting. The cost is still real. And that’s not the only cost. It took her fifteen days to get to America. In other words, she actually proved the point of many of her critics. Fossil fuels come with costs all their own—geopolitical, environmental, etc.—but the upside of those downsides is far greater efficiency. If you want to get across the Atlantic in seven hours instead of two weeks, you need fossil fuels. The efficiency of modern technology reduces costs by giving human beings more time to do other stuff.
The Conservative Planners
The unity of goodness mindset has been spreading to the right these days as well. The new conservative critics of the free market see the efficiency of the market as a threat to other good things. And they’re right, as Joseph Schumpeter explained decades ago. For instance, just as earth-moving equipment replaces ditch-diggers in the name of efficiency, robots replace crane operators, and the communities that depended on those jobs often suffer as a result.
I have no quarrel with this observation. My problem is with the way they either sell their program as cost-free, or pretend that the right experts can run things better from Washington. They know which jobs or industries need the state to protect them from the market. They know how to run Facebook or Google to improve the Gross National Virtue Index. Many of the same people who once chuckled at the Spoons story now nod sagely. I don’t mean to say that there’s no room for government to regulate economic affairs. But I am at a loss as to why I should suspend my skepticism for right-wingers when they work from the same assumptions of the left-wingers I’ve been arguing with for decades.
Embracing Trumpism to Own Trump
Instead I want—or I guess need—to talk about another trade-off. I’ve been very reluctant to weigh in on the Joe Walsh project for a bunch of reasons. The biggest is that I am friends with some of the people cheering it on. But I think I have to offer my take.
I don’t get it.
Oh, I certainly understand the desire to see a primary challenger to Trump. I share that desire. And I understand the political calculation behind the effort. It’s like when one little league team brings in some dismayingly brawny and hirsute player from Costa Rica as a ringer. The other teams feel like they have to get their own 22-year-olds with photoshopped birth certificates in order to compete. My friend Bill Kristol is convinced that Trump must be defeated and that Walsh is just the mongoose to take on the Cobra-in-Chief.
I try not to recycle metaphors or analogies too much, but this seems like another example of a Col. Nicholson move. As I’ve written before, Col. Nicholson was the Alec Guinness character in The Bridge Over the River Kwai. The commanding officer of a contingent of mostly British POWs being held by the Japanese, Nicholson at first follows the rules and refuses to cooperate with his captors in their effort to use British captives as slave labor for a bridge project. But then his pride kicks in and he decides he will show the Japanese what real soldiering is like, agreeing to build the bridge as a demonstration of British superiority in civil engineering. [Spoiler alert] It’s only at the end of the film that he realizes that building the bridge may have been a kind of short-sighted moral victory, but in reality he was helping the Japanese kill allied troops because the bridge was going to be used for shipping Japanese troops and ammunition. When this realization finally arrives, he exclaims, “My God, what have I done?”
Walsh’s primary brief against Trump is that Trump is temperamentally unfit for office and a con man. Fair enough. But he has to focus his indictment on Trump’s erratic behavior. Why? Because he’s a terrible spokesman for much of the rest of the case against Trump. I may not call myself “Never Trump” any more, but I was in 2016. And back then, the argument against Trump wasn’t simply that he was erratic. It was also that he wasn’t a conservative, that he happily dabbled in racism and bigotry, and that he was crude, ill-informed, and narcissistically incapable of putting his personal interests and ego aside for the good of the country. I’m sure I’m leaving a few other things out. But you get the point.
Walsh may be sincere in his remorse over all the racist and incendiary things he said in the very recent past. He may regret supporting his anti-Semitic friend Paul Nehlen, though I haven’t found evidence of that. But none of that history should be seen as qualifications for the presidency, the Republican nomination, or support from conservatives.
And yet, it is precisely these things that make him attractive to his conservative supporters. Trump is an entertainer who trolls his enemies with offensive statements for attention, so let’s find someone who does the exact same thing!
Walsh may have been a one-term congressman, but his true vocation was as a shock-jock trolling provocateur. It’s ironic. As I’ve argued countless times, much of Trump’s bigotry in 2016 stemmed less from any core convictions than from a deep belief that the GOP’s base voters were bigoted and he needed to feed them red meat. Trump's reluctance to repudiate David Duke derived primarily from his ridiculous assumption that Duke had a large constituency he didn’t want to offend. He may have believed the Birther stuff, but he peddled it because that’s what his fans wanted. And Joe Walsh was one of those fans.
It may also be true that Walsh never really believed most of the bilge he was peddling and that he was doing the same thing Trump did—feeding the trolls—on a smaller scale. But if that’s the case, then he’s a con man, too.
I don’t want to beat up on Walsh too much because, again, his epiphany may be sincere. There are lots of people who pushed certain arguments too far only to recognize that the payoff was Trump and the transformation of conservatism into a form of right-wing identity politics. There are a lot of Col. Nicholsons out there. And I have too much respect for Bill Kristol to believe that he would lend his support to someone he believed to be as bigoted as the man Walsh seemed to be a few years ago.
But from where I sit, the prize we should keep our eyes on isn’t defeating Trump; it’s keeping conservatism from succumbing to Trumpism after he’s gone. This isn’t easy, and no tactic is guaranteed to be successful. We’ve never been here before. My own approach is to agree with Trump policies when I think they’re right—judges, buying Greenland, etc.—and disagreeing when they’re wrong. My own crutch is to simply tell the truth as I see it, regardless of whether it fits into some larger political agenda or strategy. Truth is always a legitimate defense of any statement.
But for those who see themselves as political players as well as public intellectuals, I think this is a terrible mistake. Intellectually and morally, the case for continued opposition to—or skepticism about, Trump cannot—or rather must not—be reduced to simple Trump hatred. But by rallying around Walsh—instead of, say, Mark Sanford, or Justin Amash, or, heh, General Mattis—that’s what it looks like. Because you can’t say, “I’m standing on principle in my opposition to a bigoted troll and con man as the leader of my party and my country and that’s why I am supporting a less successful bigoted troll and con man for president.” Walsh isn’t a conservative alternative to Trump; he’s an alternative version of Trump. And his candidacy only makes sense if you take the “binary choice” and “Flight 93” logic of 2016 and cast Trump in the role of Hillary.
Let’s imagine the Walsh gambit works beyond anyone’s dreams and Joe Walsh ends up getting the GOP nomination (a fairly ludicrous thought experiment, I know). If so, I have no doubt that my friend Bill Kristol will say, a la Col. Nicholson, “My God, what have I done.”
Various & Sundry
Canine Update: It’s good to be home. The beasts were delighted to see us. Everything is settling back to normal, except for one intriguing development. I think Zoë has finally had enough with Pippa’s tennis ball routine. The other day on the midday walk with the pack, Kirsten managed to film Zoë putting an end to the tennis ball shenanigans. She took the ball and buried it. It was, to use an inapt phrase, a baller move—and she was unapologetic about it. Maybe she just didn’t like all the commotion with the other dogs, because she’s tolerant of the tennis ball stuff again. Or maybe she was being protective of her sister given that many of the other dogs in the pack are known thieves. Regardless, they’re doing well and having fun.
If you haven’t tuned into The Remnant lately, please give it another try. The first episode of the week was with Niall Ferguson and the feedback has been great. The latest episode is with my friend and AEI colleague Adam White on all things constitutional. Word of mouth is really important in building up audiences, so if you can spread the word about The Remnant or this “news”letter, I’d be grateful.
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Long Thesis on Unity Biotech

Overview: This post seeks to articulate an investment thesis for Unity Biotechnology (UBX). I welcome any perspectives that challenge this thesis. In light of Unity’s strong team, promising science, risk mitigation strategy, large market potential, loosely defined category, and recent pullback in valuation I believe this is an opportune time to begin building exposure to the company. Unity is a clinical stage biotechnology company developing drugs to extend human health span (defined as how long we live free of chronic diseases of ageing). Unity works across the spectrum of mechanisms that drive aging with a near term priority to remove senescence cells for patients with osteoarthritis (the main reason it hurts to be old). Senescence cells (SC) are cells that no longer divide and tend to poison around nearby tissue (cause inflammation). Beyond osteoarthritis, Unity will also work to rollout similar therapies for eye, pulmonary, and cognitive diseases which affects millions of aging individuals. Unity’s current market cap is 360MM, the company went public in May 2018 at a valuation of 700MM valuation.
What difficult problem is the company solving (better than others)? Key questions include: Why do people get sicker as we age? Are there drugs to halt, slow, or potentially reverse the mechanisms of aging? What is the most impactful disease to demonstrate the drug’s efficacy and safety? As context, quality of life decreases as we age due to a number of factors including stem cells (loss of mitochondrial function), nutrient sensing (caloric restriction as we age), circulating youth factors (loss of protein production) and cellular senescence (cells that no longer split and cause multiple issues in nearby micro tissue). Unity focuses on cellular senescence, not because it is the only or even most important aging mechanism, but because of all the mechanisms identified to date, it is the most “druggable” approach (i.e. easiest to make drugs and molecules to combat against). During the last 7 years, Unity has proven their thesis in mice allocating several rounds of venture capital to mitigate the main scientific questions and company killer risks. The scientific breakthrough leading to company’s creation occurred in 2008, when Judy Campisy (one of Unity’s co-founders) effectively showed that accumulation of SC poisons local tissue and contributes to diseases of aging, based on this and subsequent scientific research, the team at Unity proved that removing SC in mice (genetically engineered to age faster), not only increased lifespan by ~35% but improved bone density, mobility, hair growth, and decreased cognitive decline, materially improving overall health span. Unity recently completed Phase 1 clinical trials to prove safety and tolerability in humans with osteoarthritis of the knee. Over the next few quarters the company will work to replicate the technical success seen from removing SC in mice on humans and will continue to expand its pipeline. Next areas of focus will include ophthalmology, pulmonary, and cognitive diseases of age affecting millions of aging Americans.
Is this the right/best team to solve this problem? Unity features a solid team (presumably the best) to succeed in this nascent but promising field. Nathaniel (Ned) David (President and co-Founder) co-founding four biotech companies (two exits large exists, one for $270mm another for $2.1bn) and gotten two drugs approved. Ned is also a tenured partner at ARCH Ventures (credible biotech VC firm with strong realizations). Sapphire Energy (genetically engineered algae to produce liquid transportation fuels) was a well documented failure executed proved leading bio-engineering and built production at scale, the company was backed with Bill Gates. Technical co-founders include two pioneers in the field of aging research: Judith Campisi (Buck Institute) and Jan Van Deursen (Mayo Clinic). Keith Leonard (former CEO at Kythera) acts as Unity’s CEO and has worked with Ned for 15 years and was a former senior executive at Amgen. The board features prominent VCs and scientists (Bob Nelsen and Kristine Burow from ARCH Ventures, Camille Samuels from Venrock, Margo Roberts former CSO of Kite Pharma). Financial backers include top-tier VCs and Family Offices featuring Jeff Bezos, Peter Theil, and Paul Allen among other prominent financial and strategic institutions that further legitimize the investment opportunity and caliber of the team.
How will Unity capture, distribute, and realize value? Is their position sustainable and defensible? Unity is a clinical stage/pre-revenue company focused on R&D. There is little visibility as to timeline of commercializing any of its drugs yet, let alone go-to-market strategy. This is common of early stage biotechnology companies. Guidance on pricing, go-to-market, and distribution will likely be provided as closer to Phase 3 and commercial viability. As customary, we expect the company’s position to be defensible though the use of patents, intellectual property rights, as well as exclusive licensing and/or royalty structure with leading larger pharma partners.
What is the market opportunity and state of competition? The market for health span drugs is large given the tens of millions of aging baby boomers in America and other developed markets suffering from arthritis, pulmonary, eye and cognitive diseases related to aging with estimates of potential royalty payments between 2-5 billion. There are multiple smaller players in the field pursuing multiple other mechanisms but generally lack both credible talent and financial backing. Competition from large pharmaceutical companies is not evident at this stage but expected to increase as technical and commercial feasibility becomes more evident. A potential acquisition is a probable scenario but Unity also has the potential to become a durable and standalone commercial aging platform (releasing new drugs with little incremental cost) to generate large future cash flows streams.
Why is now the right time to invest? Biotech is a risky endeavor, it takes time and capital with significant binary risk. Due to the slow nature of clinical trials it could be 2-3 years before their thesis fully plays out -- by such time it may be too late to fully participate in the upside. Given this uncertainty, young and smaller capitalization companies fluctuate widely in value, making an investment highly speculative and prone to failure. As of July 2019, Unity has lost nearly 50% of its IPO valuation and trades at a small premium to all capital raised to date (market value to total paid-in capital of ~15%). Due to high R&D and overhead, a dilutive follow-on transaction is likely within the next 12-18 months. This investment represents an opportunity to gain exposure to VC like risk/reward through a public vehicle. Unity looks like an option to get exposure to an emerging and large vertical of healthcare. Although highly speculative this seems like an opportune time to build a position in the company. Consider building exposure a 4-5% exposure at ~$8.5/share leaving reserves to accumulate more with more evidence of technical success. I welcome your views on this thesis*!*
This is post is not investment advise.
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WEEKLY EVENTS 8/15 - 8/22

I'm exhausted, but this is only about half of the stuff for this week. I'll have to pick it up again tomorrow, so check back in a day or two for the full listing. Thank you!
Tally’s Independent Cinema and Theater Offerings:
  • Centre of Tallahassee: Alice Cooper. 6:30pm/all ages
  • Waterworks: Exotic Wildlife Gone Wild! Science Salon. “It's not just sock and sandal wearing tourists that set up camp in Florida but also a whole lot of critters that dig the scene here and never leave! Kristen Sommers from FWC will host and explain how mostly awful non native species negatively impact our environment and explain some of the steps taken to mitigate that impact and stop future interlopers from changing their address to Fla.” 8:35pm/free/21+
  • Bird’s Oyster Shack: Wednesday Night Lab Session With Guest host: Ben Banks. 6pm-8pm/free
  • Fermentation Lounge: Quizmaster General Knowledge Trivia. “Quizmaster is hosted by Bennett Miller from 7-9pm every Wednesday, and features three rounds of general knowledge trivia (and a weekly food special). It is free to play and teams of up to 6 are welcome. The winner of each round receives a sample flight, and the Quizmaster for the night receives a $25 gift card and serious credit on Geek Street.” 7pm
  • Brass Tap on Gaines: Trivia. Check their FB page for the theme. 7pm
  • Hurricane Grill & Wings: Trivia With Greg. 7pm
  • GrassLands Brewing Company: BYOBG! Bring Your Own Board Game. “Our gracious host, Trevor Bond, will be featuring one game each week. Feel free to bring your own games to play & share.” 7pm/21+
  • Proof: Bar Trivia With Hank. Drink delicious brews and show off all those random factoids you thought you’d never use. Local beer, local trivia in the heart of Tally’s Art District. A food truck is always out front for this, too, or you can order and pick up something great at the Crum Box Gastgarden (the caboose in RR Sq). Bar tab for 1st and 2nd place teams. 7:30pm/no cover
  • The Warehouse: Open Mic. “There is a lottery for time slots. Now smoke free!” 8pm
  • 926 Bar & Grill: Karaoke with Nathan. He’s got all the songs. All the songs you want to sing. If you see me there, don’t make too much fun. 9pm
  • Just One More: Karaoke with Roger. 9pm
  • Bird’s: Comedy Night. I’m pretty sure this is both a performance and an open mic. 9:30pm/free
  • Parlay Sports Bar: Mario Kart Tournament. “Our first Mario Kart Tournament was such a success we've decided to do it again! If you're a little rusty, don't worry, you can stop by anytime and practice, we've got everything hooked up and ready to go, and you can play anywhere in the bar. First place wins a $50 bar tab, and second place wins $25! The tournament is limited to 16 players, and preference will be given to those that sign up beforehand, so make sure to stop by, grab a beer and get your name down!” 6:30pm/18+
  • Lake Ella Area: Food Truck Thursday featuring Dorian Q Jazz Theater. 6pm
  • Beef O’Brady’s: Trivia Night from AJ Johnson Trivia. 6:30pm
  • Junction @ Monroe: Open Mic. “The only open mic that pays the performers! Bring your instruments and play an open slot or just come and be entertained in Tallahassee's best sounding room! Free draft beer for performers.” 7pm/$5
  • Gaines Street Pies: Bar Trivia With Hank @ Warhorse Whiskey Bar. With a picture round! Sound round! Speed round! Hoarder’s Delight drawing! And all the other trivias! Win a delicious 18” pizza! 8pm
  • Dux (Crawfordville): Karaoke with Big Bob. $25 bar tab given away every week. 8:30pm-12:30pm
  • Midtown Caboose: Trivia Factory. 8:30pm
  • Unique Wonders: Live Comedy with Big Hou! 8:30pm/$5
  • Pockets: Karaoke Dance Party with Keith Welch. 9pm/21+
  • Applebees on Cap Cir: Karaoke with Amanda Goram. 10pm
  • Birds: Karaoke Hosted By Jumpin Jams. Some of the most diverse and longest running karaoke in town. 10pm
  • Domi Station: Investing in Social Change: A Social Entrepreneurship Conversation. “Join us as we showcase Tallahassee’s social entrepreneurs that have made an impact on the community. Our speakers will discuss how to get your nonprofit going, local resources are available to the community, and how to make the biggest impact possible with your idea.” 6pm
  • Waterworks: August Paella Party! “We're trying to make summer more bearable with the best paella & sangria in the Big Bend! Real Paella will be cooking up three kinds of authentic paella and Waterworks will be blending up tasty sangria and cocktails all evening! Paella is $14 (tax included) per plate and includes a side salad. Types of paella available are: pork paella, chicken & seafood paella, vegan paella.” 7pm/21+
  • The Warehouse: Lady Comedy. “Join the female identified and non-binary comics & story tellers of Tallahassee at The Warehouse for a pop-up night of comedy! Brittany Meyer, cast member of the kates and FSU alumni, is visiting from Chicago and will be hosting a kates show with the great local talent of Tallahassee. We are giving ladies/non-binary folks the spotlight and drinking hella Yuengling at The Warehouse while doing it. (We don't have Yuengling in Chicago).” 8pm
  • Camp Folks: Totally Tubular Fridays. “Spend a Summer's day floating down a lazy river! Every Friday in May, June, and July, Camp Folks will be doing tube runs to Spring Creek, otherwise known as "Bear Paw." Known for its leisurely speed and crystal clear water, Spring Creek and Chipola River, offers one of the most popular tube runs in the North Florida Panhandle. Let Camp Folks to take the wheel as you sit back and enjoy time spent with your tubular river crew! Choose to rent a single (bottom & no bottom), double, or cooler tube at checkout.” 11am-6:30pm
  • Parlay Sports Bar: Karaoke with Big Bob. 8pm
  • Leggetts: Karaoke with Paul. 8:30pm
  • Just One More: Karaoke with Roger. 9pm
  • 926 Lounge (Formerly Pugs): The Friday Night Party. “Get your pre-game on at Happy Hour with Tom from 4-9 and the dance party getting rolling at 10 pm with our favorite house DJs slinging sound all night long. At midnight, join our talented Queens for an amazing show!” 9pm/$5, $7 under 21/18+
  • Stetsons @ The Moon: Karaoke with Johnny Ray. 10pm/$5/18+
  • The Joint: Beer Olympics. “8 teams will battle it out in Flip Cup, Beer Pong, BattleBeer, BeerCube Blitz, and The Quarter Quell. Here's how it works: You put together a team of 4 players. The cost per player is $25, this includes the cost of domestic beer you'll use to play as well as pepperoni or cheese pizza from Gumby's. Head in to The Joint to pre-pay and secure your team's spot, all 4 members must be paid for at one time. You must be signed up by 8/17/16 to participate. Prizes are awarded to Gold, Silver, & Bronze finalists, and all participants receive a swag bag of goodies. There will be door prizes and drink specials for spectators, as well as a prize for the most "colorfully" dressed spectator.” 7pm
  • Bradfordville Blues Club: Toots Lorraine & The Traffic. 9pm
  • Park at Monroe: The Downtown Marketplace. 9am
  • Corner of Georgia & Macomb: Frenchtown Farmers’ Market. “The Frenchtown Heritage Market offers a wide variety of fresh, naturally grown produce. Live music, cooking demos, fruits vegetables, and honey sold directly by farmers.” 9am – 1pm.
  • Wakulla Springs Lodge: Bob Carey on Piano. “Come on out and bring along your vocal chops, browse through my lyrics book, pick up one of my pass-around mics and sing your heart out, or just grab a stool and enjoy a fun filled evening of music and dancing. Full bar open til late.” 7pm
  • Salty Dawg: Karaoke with Paul. Family friendly! 8pm
  • Leggetts: Karaoke with Cowboy Chris. 9pm
  • El Patron: Pasion Latina. Bachata, Merengue, Salsa, Reggaeton. 9pm
  • 926 Lounge: Sanctuary (formerly Blue Monday). “Tallahassee's Longest Running Dark Dance Night is here again! Wear your finest for Darkwave, EBM, Industrial, and some of your other favorites with some of the best and weirdest people in town. Fetish Friendly.” 10pm/$5/18+
  • Tallahassee Junior Museum: Visit Tallahassee Free Admission for KIDS Day. “Don’t miss the next Visit Tallahassee T.O.U.R. Guide FREE Admission Day, Saturday, August 20 at the Tallahassee Museum, where admission is FREE all day from 9:00 a.m. to 5:00 p.m. for CHILDREN 17 AND UNDER! There will be plenty of family-friendly activities happening throughout the Museum grounds including close-up animal encounters and living history demonstrations on the 1880’s Big Bend Farmstead. Special Group Rate pricing will be available for CHILDREN 17 AND UNDER on all Tree to Tree Adventures courses throughout the entire day!” 9am
  • Mission San Luis: Lures and Legends Pokemon Go Event. 10am/$5, kids $2
  • Proof Brewery: 2nd Annual Tallahassee Beer Mile. “Since 900 of you completed the race last year, we are bringing back the best mile of the year. Join us on August 20 when the Tallahassee Brew District and Capital City Runners present the second-annual Tallahassee Beer Mile. The Tallahassee Beer Mile is a one mile run/walk in which participants are asked to drink one 12 ounce beer at each location. Registration will begin at 4:00pm at Proof Brewing Company (You MUST bring your ID with you when you check in). Race will start at 6:00pm. Register at www.tallahasseebeermile.com. Start location: Proof Brewing Company. Stop two: GrassLands Brewing Company. Stop three: The Brass Tap - Downtown on Gaines St. Stop four: Madison Social. Your $25 registration fee includes a 12 ounce beer at each location. Note: this is a non sanctioned event and for fun...but love folks that race hard.” 4pm
  • Carolina Haus: RC Presents: Myakka,Vile Body, Seesaw, PLUS ONE. 9pm/$5
  • Side Bar Theater: Brighter Poet, Emerson & Corey Crumpacker. 9pm/$10
  • Bradfordville Blues Club: Geoff Achison & The Souldiggers. 10pm
  • Lake Ella: Sunday Brunch. “The Spring Concert Series is here! Come out to Lake Ella every Sunday for food trucks and live music!” 11am-2pm
  • GrassLands Brewery: Let's Get Beers Together! “Each month, we will highlight a local organization that is committed to pulling the community together. 10% of the month's Sunday proceeds will benefit that month's featured organization! We are so thrilled to announce that our first featured organization is the Mickee Faust Club!!! An amazing group of people that are an extraordinary asset to Tallahassee.” 5pm
  • Salty Dawg Pub & Deli: The Famous Acoustic Jam w/ Wayne, Glenn, and Bo. Open mic, free beer for performers. 6pm
  • Capital Lanes: Spare-A-Life Bowling Event. “Join us for this year's Spare-A-Life Bowling Event. 100% of the proceeds benefit the homeless animals! Since our event has been so popular, we now have two bowling sessions. You can sign up to bowl from 2-4pm or 5-7pm. Fees include lane, shoes, pizza and beverage! You can sign up as an individual or a team. Register today before the lanes fill up!”
  • The Sharing Tree: Summer Food Swap. “Pickled tomatoes? fresh summer jams? Killing the sauerkraut game? All of the tasty treats are welcome for an afternoon of good food and community. We'll provide tables and drinks, you provide the trades! Please keep in mind that pre-registration is required, and the event is limited to forty participants. A $2 donation is also requested for participation. To register, please email [email protected].” 5pm
  • Quincy Movie Theater: Auditions for Jesus Christ Superstar. “Calling all Actors, Singers and Dancers! Announcing auditions for Andrew Lloyd Webber's rock opera Jesus Christ Superstar. Please prepare sixteen bars of a song from the musical theatre catalogue or of the style of the show, and bring sheet music. An accompanist will be provided. Please wear or bring clothes for a movement audition. Callbacks will be held at director's invitation on August 23 at 7pm. Rehearsals will take place primarily in Tallahassee. Performances are October 7-16 at Quincy Music Theatre. Questions? Please contact Naomi Rose-Mock(director) at 850-879-0294 or via message here. See you at auditions!” 7pm
  • 926 Bar and Grille: Bit Brigade w/ Whateverer, Teen Baby & States Avenue. 7:30pm/$6
  • Burrito Boarder: Bar Trivia With Hank. $30 food & bar tab for first place. Specials on shots and $2 margaritas. 7:30pm
  • Waterworks: Patio Theater. 8:30pm/21+
  • 926 Bar & Grill: Karaoke with Nathan. He’s got all the songs. All the songs you want to sing. If you see me there, don’t make too much fun. 9pm
  • Side Bar Theater: Open Mic Mondays with Karaoke and Games. “Open Mic: Drums, Guitar Amp, and Bass Amp will be provided. (Bring your own guitars and various instruments!) Karaoke, Nintendo 64 ( Mario Kart, Starfox, and more!), Foosball, Cornhole.” 9pm/free/18+
  • Atmosphere Pub: Hip-Hop Open Mic Monday's // Dj T Wixx on site // Bring your Tracks. 10pm
  • Junction @ Monroe: Phantom of the Paradise & Forbidden Zone: A Trash Cinema Double Feature! “Hey Gang, The Primal Root her, inviting you out to an evening of cult cinematic musicals as only The Trash Cinema Collective can provide! I am thrilled to be presenting to you, Brian De Palma's Phantom of the Paradise (1974) featuring the music of Paul Williams followed by Richard Elfman's Forbidden Zone (1980) featuring the music of The Mystic Knights of the Oingo Boingo!” 7:30pm/$5
Keep checking back, sometimes I update. Got anything to add?
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Million Dollar Dream Review, Legit or Scam, Million Dollar Dream Really Work?

What Million Dollar Dream Software All About? Does Million Dollar Dream Review Really Work? Find Out The Truth About Million Dollar Dream System Before You Download it!
Million Dollar Dream Review
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Million Dollar Dream - Summary
Many customers who have tried using the Million Dollar Dream have reported 85% to 92% success rate. As it has been developed to help people trade regardless of knowledge and experience, eventually, users will learn how to accurately predict trends in the market within a specific time period, giving them a higher chance of making profits. In addition, the user-friendly interface has made it trusted software among many aspiring traders. If you wish to earn huge amounts of money from your own home, Million Dollar Dream is your best shot at it.
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Stark Trading System Review, Scam Or Legit? Honest Stark Trading System Review With FREE Joining Bonus

Stark Trading System Review : Anthonio Stark & Richard Paul's Stark Trading System Review. What’s Stark Trading System All About? My Honest Stark Trading System Review Share With The Truth Until Buy It.
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Resources: http://www.bestbinaryoptionssignal.com/stark-trading-system-scam-review/ http://www.binaryoptionswatchdog.com/stark-trading-system-scam-review/ http://thedailyharrison.com/reviews/stark-trading-system-review-is-stark-trading-system-scam http://www.katd.org/stark-trading-system-review/
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[Table] IAmA: IAm the Houston Rockets GM, AMA (playoffs edition)

Verified? (This bot cannot verify AMAs just yet)
Date: 2013-04-19
Link to submission (Has self-text)
Link to my post
Questions Answers
Many Houston fans are worried by the prevalence of ISO plays late in the 4th quarter of close games. How are you reacting to the usage of Lin and Harden in these closeout games? Pretty much every NBA team increases their use of isolation late&close. Some of this is supported by the data - e.g. to control the clock to minimize the time to score for the other team or to potentially exploit a certain match-up when the opposing team switches all perimeter screens as is often done late&close. Some of this is not supported by the data.
Followup: What's your opinion on how well the coaching staff is meshing two great ball dominant guards? What steps are the Rockets taking to further this melding into a cohesive unit? I think the coaches have done a fabulous job meshing our roster which had the most turnover in NBA history this season and is also the least experienced team in NBA history.
Hello Daryl. As my username shows, I'm a huge Rockets fan. I'd love to hear your opinion on Wednesday night's Rockets game. We got off to a good start, but once our lead hit 11, we stopped moving the ball, we stopped getting good shots, and we stopped pushing the tempo. What happened? Why were those offensive possessions the best we could get? You are clearly a Rockets fan as all of the problems you listed from the game are correct. Coaches and players working to correct.
Very frustrating, we should be playing the Spurs right now. Regardless, I'm proud of this team and I'm humbled to finally be back in the playoffs after a 4 year drought. Thanks for all the hard work you've done thus far. #rednation. With the benefit of hindsight, it probably was not the correct move. That said, if Delfino had made a few 3s during that stretch it may have worked out. Very hard to coach in this league as everyone else gets the benefit of seeing how things work out and then criticizing.
Before the season started (but after the Harden trade), where did the analytics have the Rockets finishing? Vegas oveunder was 29 wins, that is about as objective a number as you can get.
Can we ever get the actual throwback uniforms for a game? Not my area but I do love the classic uniforms.
I know you're a regular at NBA, but how often do you trek to other Rockets blogs like The Dream Shake, Clutchfans, and Red94? I consider it part of my job to stay up on all analysis of the Rockets. May learn something.
29 wins was before the Harden trade, right? Yes, but after the Harden trade the oveunder was still in the thirty win range. What the coaches and players have been able to do to get us to 45 wins is remarkable.
As a fan of advanced stats I'm sure you realise that Harden's PPP from ISO is lower than his PPP from PnR. Have you ever discussed this with coach McHale? Pretty much every NBA player has a lower PPP from ISO than PnR so there would not be much to discuss.
With the emergence of Terrence Jones and Greg Smith as starting calibre power forwards, are you still looking to sign a star big man in the coming free agency, or will you sign the best player available regardless of position? We are excited about Terrence Jones and Greg Smith emergence - both are clearly rotation caliber players. We have not developed our full free agency plans yet.
How would you fix the Suns? We have a binary star system.
What is your favorite beer? I am not a big beer guy. Will this or Mitt Romney be my most unpopular answer ever?
Maybe this isn't your job per se, but do you think it's time for the Rockets to get a rebranding? I feel like we're in a new era since all the moves this summer and the Harden trade. Plus the current logo and uniforms are pretty atrocious imo. Apology, not my job, I have enough to worry about already!
How difficult has it been drafting true NBA talent with the implementation of the one-and-done rule and the fact that we are usually in the 14-18 slot in the draft? Are this team's best years ahead? The good news is we don't have a 14ish pick this year. The bad news is that it happened because of my worst trade: Terrence Williams for this years 1st.
How did you feel about McGrady signing with the Spurs? DId you ever have any interest to bring him back for veteran guidance? McGrady is still a quality player. Did not fit our direction to bring him back at this time. Makes sense for the Spurs. I wish him well.
Give me your thoughts on Royce White? Do you ever think he'll play for the Rockets? I was happy Royce played for the Vipers at the end of their regular season. We only want him to succeed.
How do you feel Lin is developing? Do you see him as your pg for the future? I feel like he needs the ball in his hands to be truly effective and with Harden commanding the ball most of the time, Lin becomes redundant. For his first year as a starter, I thought Jeremy was fantastic and given his physical ability, competitiveness, and work ethic I only expect him to get better. His primary weakness is his shot which is a skill that generally improves as your career progresses. See also my Quora answer on what he has improved this season
Also you should play Terrence Jones more. The guy is a winner and a competitor. Terrence Jones has worked hard to get his shot and is making the most of it. Love him.
Harden took and made the most unassisted 3s in the NBA. Is this something you'd like to see more or less of going forward? Is this something you've discussed with Coach McHale? The best 3s are off the catch. That said, it is pretty hard to take a bad three, it is almost always better than most other options once you pass up the shot. Harden is one of the top players in the league in shooting% on 3s off the dribble.
Besides the Rockets series, what first round playoff match up are you most excited to watch? Clippers vs Memphis is the most compelling. Chris Paul as the best PG on the planet vs a physical team with great players at multiple positions.
How do you feel about what Coach McHale has done this year? Taking the 6th youngest and least experienced team ever to the playoffs in the tough western conference when we were picked by multiple publications to finish last? I would say Coach McHale has done a great job.
Thanks for doing another AMA, Daryl! Lifelong Rockets fan here. I always hear about Hakeem working with other teams' big men. Is there not a permanent postion the Rockets would be willing to give him? He seems like too much of a wanted commodity to just let others have. Our big men have worked with Hakeem. That said, we have a richness of big men coaches here in Houston with Carroll Dawson (who worked with Hakeem/Ralph/Moses/Yao) and Kevin McHale (top 10 big man ever).
This season the Rockets have taken very few mid range shots (especially since PPat left). It's pretty widely known that you've stated the most efficient way to get points in the NBA is via 3s, layups, and free throws. Now that the Rockets have been playing in such a style this season, has it changed your analysis at all? Have any surprising trends or conclusions pertaining to this come up? One interesting thing is that folks think we are proscribing mid-range shots, which is not the case. Our transition based attack and open sets give us the best chance to win with our personnel and generally this type of offense leads to high quality shots.
I just watched the movie Linsanity at the PacArts (Asian Film Festival) Spring Showcase. Loved it. Anyways, when was the last time you had TacoBell, and what did you order? The Doritos-Locos tacos are the only inelastic food item I know. I would pay almost anything for them.
What move/trade do you think was the biggest statistical gain for the Rockets? In other words, which move made the biggest overall impact for us as a team? Thanks for bringing an exciting product back to Houston, I fully believe you will bring a championship to the city. RED NATION FOREVER. Rafer Alston for Lowry for Toronto guaranteed lottery 1st were probably the most important trades as it set up the Harden trade more than any other moves
I believe it would behoove the NBA if a few great minds throughout the business, persons with varied backgrounds in the game and outlooks on its future, met to discuss how to improve the game fundamentally through rule changes. A panel with Bill James a few years back was on this exact topic.
What changes need to be made, if any, to maximize our chances of beating the Thunder? Increase the variance.
Hey Daryl, huge NBA fan here. The team you have put together is incredibly fun to watch and likable. My question, did you know from your analytical data when you drafted chandler parsons that he would be as good as he is this quickly? No, no one could predict how good Chandler would be. We obviously thought he was very good or we would not have picked him but his success should be attributed to him and his hard work.
Who's a young or unproven player on the Rockets that you're particularly excited to see develop in the upcoming years? Too many to choose from (in no particular order): Patrick Beverly, Terrence Jones, Furkan Aldemir, Donatas, Thomas Robinson, Greg Smith.
What was the most interesting paper to come out of this year's SSAC? Value of Flexibility in Roster Construction
Research papers will be much bigger next year. Stay tuned!
With a lot of teams embracing the advanced metrics in basketball over the last decade would you say your team is still at the forefront of that in terms of the technology and money that spent on the new analysis? Trying to stay ahead but there are some very good teams now.
The smart teams are focusing on shots at the rim and corner threes because they're the most efficient. What's the next step when defenses figure out a way to slow that down? TBD.
Last updated: 2013-04-24 04:06 UTC
This post was generated by a robot! Send all complaints to epsy.
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[Table] IAmA Reverse engineer who broke millions of hotel locks. AMA

Verified? (This bot cannot verify AMAs just yet)
Date: 2012-08-17
Link to submission (Has self-text)
Link to my post
Questions Answers
While there is no doubt that your expose' will only improve security in the long haul, what are you thoughts/feelings on the immediate impact of your findings? At the end of the day, I know that people will use this for malicious purposes, just like any important vulnerability that's disclosed. However, I have to balance that out with a question that's been on my mind for a long time: How many people used this before I even thought of it? How many people have been robbed or worse, because of these buggy locks?
Did you do any sort of responsible disclosure such as contacting Onity before going public? Covered at Link to www.reddit.com
I'm in the navy, and currently living in the barracks which are secured by these locks. This explains how a friend of mine had some of his stuff taken. Thanks for doing your part to stop this, we kind like our stuff here. Wait, they're using HT locks or CT locks? They look slightly different, and this stuff won't work on CT. HT is usually only used in hotels, whereas CT is used for commercial buildings, dorm rooms, barracks, etc. I know CT locks are used on some carriers, for instance.
What are you working on over at Mozilla? I work on Boot2Gecko, primarily doing gfx optimizations. Currently working on overscroll animations (what happens when you scroll a page too far).
Do you use Boot2Gecko as your primary phone or for any "serious"/actual normal stuff you'd use with your previous Android or iOS phone? Not yet. I use it as a side phone when I need it, but honestly I break it too often to do so. Sometime soon I'll set a phone aside for stable testing and dogfood it properly.
Why is it important to have an animation for it? Why not just have it have a hard stop? It feels very unnatural to have a hard stop.
Why doesn't Firefox/Gecko recognize my website's beautiful CSS3 stylized scrollbars? Sad. Couldn't tell you, sorry. I work much, much lower level than that; know nothing about the layout side of things.
None of our guests knew anything about it, so no having to deal with the fallout. Let me ask you, though, since I have your attention, what your beer of choice is? Depends on my mood. Overall favorite is Clown Shoes Black IPA, but I'm also a huge fan of Anchor Steam.
Clown Shoes? Damn, just looked them up and they don't seem to be available to California. Anchor Steam is a damn fine beer, though. Have you had their Breckel's Brown? So tasty and malty, like a biscuit. Don't believe I have. I'll check it out :)
Dude you're a MA guy? Western MA reporting in, Clown Shoes is AWESOME. Link to beeradvocate.com. Nope, sorry. NYC for a few more hours, then CT. Fell in love with Clown Shoes after they came to a local craft beer festival.
Also, something I was wondering earlier. Why didn't you give them a full heads up before releasing it full disclosure? Isn't it ethical to give them a warning you are going to release a pretty big vulnerability in a companies product? Tl;dr: I figured that getting the information out there and exposing this as the major issue it is was priority number 1; the safety issues involved make it a really risky proposition, and letting people know how bad things are was the best way.
I saw a couple options if I had gone to Onity with these issues ahead of time: 1) They file a lawsuit and keep me tied up in court to keep the info out of the public eye and save face. Result: information doesn't go public (and get fixed) for years. 2) They ignore it, I release everything. Result: same thing we have now. 3) They claim to fix it repeatedly and pressure me to hold off on releasing anything until X% of hotels are fixed. Result: nothing happens, ever; they fix it in an improper way and hotels never update. I eventually release, maybe. 4) They fix it quickly, get the fix out to hotels on their dime, and all is well. Result: Complete safety.
In my opinion, #1 and #3 are most likely. Either way, hotels continue to be unsafe for a very long time. That isn't okay in my book. This forced their hand such that they had to respond and fix the issues, and they're taking steps to do that now.
All of this is combined with the fact that I know I'm not the first person to discover this. It's simply too damn simple; how many people have used this in the past for malicious reasons? The cat has been out of the bag for many years, IMO.
Lets say you have 30 days until the presentation, you get an anonymous email address and send the company a description of the flaws with a note saying you will release the info to the public in 30 days and will not be checking your email until after that time. Maybe screenshot/record the mail being sent for evidence in case they deny it. In this scenario they have 30 days to fix the problem, they have no way to threaten you (or maybe they they could threaten the conference and this idea only works if you leak the info online independently?), and you can expose them as being even bigger pricks if they fail to take timely action to fix the problem. A decent idea, or not workable? That sort of thing would probably work if you wanted to remain anonymous while giving them a heads up. However, it seems like it'd increase your liability if you were to get into a legal battle after it.
Wikipedia tells me you were interested in computing by the age of four. What was it that got you interested at such a young age? I discovered a book on BASIC for the Apple ][E in my school library, and started tweaking the code in there, then started writing little text-based games; that was probably kindergarten or first grade. It was short (maybe 30-40 pages?) and IIRC its cover was orange with white lettering, if anyone has a clue. Would love to get a copy again.
The other thing was that I learned about EDIT.COM and opened the game Pilgrim's Quest in it, on my old 386. I was maybe 6 or 7, and I had absolutely no idea what I was doing, but I mashed keys and typed in words and such; it wasn't source, it was a raw binary. I ran the game, and the screen was completely corrupted, but on pressing a key, you'd hear a sound. Each key had a different sound. It was then that I realized that if you understood what these things did, you could be the master of a little universe of your own.
Of course, playing Shadowrun on the Genesis when I was a little bit older helped a lot. I still want to be a decker; hell, I even named my old OS "Renraku".
How does a 30 year old newbie learn to code? I'm not really sure. The hard part is just getting started, so maybe something like Link to www.codecademy.com could be of help.
I think the book you used was called "BASIC Programming for Kids." If so, that's the exact same book that got me into programming too! Link to www.amazon.com. Holy shit, I think you're right. Thank you!
Now that you've mentioned Apple, what is your opinion of Apple? I hear a lot of opinions here on Reddit regarding Apple, but I would love to hear what someone like yourself thinks of Apple or their direction/machines. I like some of their products (I couldn't live without my iPad, particularly) but despise their business practices.
I want to be a white hat security guy; how do I get started? my background is unix sysadmin/qa, etc. Learn to program in at least one high-level language (Python, Ruby, JS, whatever), learn to program in at least one low-level language (C is best, C++ is almost as good). If you want to work on the reverse-engineering side of things, learning assembly for at least one ISA (x86 is best) is a very good thing. If you want to work on the web side of things (which you'll likely need, at some point or another) then you have to understand how web development is done, how the web itself works, how JS works, etc.
Start from the top down; first step is the web. OWASP has lots of good information, but use it to just get a feeling for what's out there, then Google around.
Run through some web security challenges, e.g. HackThisSite, and use WebGoat as a test.
Read up on native security a bit -- learn the basics of buffer overflows and all that fun stuff.
Grab old versions of open source software with known vulnerabilities, and rediscover them. This applies equally well to native and web software.
Practice, practice, practice. Every time you encounter a piece of technology or a security process, think about how you could attack it. Take a shot at every piece of software you come across (-NOT- web-based services; that's generally illegal).
Surround yourself with people smarter than you are on every topic you're interested in. This is easy to do in the age of the interwebs.
I'm also writing a book on getting into security; the outline is available at Link to gist.github.com . The point of it is not to be a complete guide to every detail of every part of security, but rather to expose you to enough different things that when you need to learn something, you're able to. It'll be out... sometime before I die :P.
Are these generally the same set of instructions necessary for someone of less than honorable morals to learn to get into the criminal side of things? I ask out of curiosity if the difference is entirely intentions, because i'm really interested in psychology. Totally not a criminal and stuff :P. The only difference between an honorable hacker and a dishonorable hacker is what they do with their knowledge, not the knowledge itself.
Do you have an idea when this book will be released? I'm quite interested :) Can you suggest any other book(s) on the subject? I really have no idea. I'm about a quarter of the way finished, having started it maybe 4-5 months ago, so it's coming along pretty quickly. I'm happy with how it's turning out, though I have no idea how I'm going to publish it; some friends keep telling me to throw up a Kickstarter project to fund it, pay for an editor, etc but I'm on the fence still.
Ask you ANYTHING? well why don't we start with how do you do it? As in how it works? Well, there's a port on the bottom of the lock that's used to program the lock. That port allows direct memory access, enabling you to read the sitecode (unique code for the property) out of memory, then send it back up with the open command. No authentication is required, and it takes about 200ms for it to pop open. Full details are available at Link to daeken.com if you want more details.
Or do you mean how I actually got to that point?
Well I was actually jokingly asking you to disclose the secrets of your trade. Answer was totally unexpected and satisfactory :) First step is to figure out what your goal is. For instance, you may want to understand the model format in a game, so you can render them yourself.
Once you have your goal, think about how you would design the system you're trying to reverse-engineer. It doesn't have to be detailed, just a general idea.
From that, come up with a set of assumptions about the system. E.g. "there will be a field in the header that is roughly the size of the file divided by 12 (3 x 4 byte floating point values, for coordinates)". Then check each of those.
Once you've done that, rethink your model of how it works using the new information, and repeat until you figure it out.
It helps massively to know a little about everything, so you can draw conclusions about how things work just by seeing what it does. Yep. That example is real, btw -- I worked on reversing the Everquest file formats many, many years ago to write my own client for it. I was still in high school at the time; I printed out a couple pages of the hex dump of a few files in a given format, then I'd go over them with highlighters and figure out the specific bits. It's all about pattern matching and checking assumptions.
Even though I didnt understand a huge amount of acronyms in that it was still really interesting! thanks! Anything specifically? I might be able to clear things up.
Do you think the lock manufacturer will fix the vulns at least for newly produced locks? Or are there maybe even inherent protocol weaknesses that would make a patched lock incompatible with existing programming devices or cards or so? Fixing these vulnerabilities consists of two parts: changing the protocol for the portable programmer such that direct memory access is not possible, and changing the crypto to use a safe algorithm and a large key size (a 32-bit key on a terrible proprietary algorithm is very much Not Ok (TM)).
This means that the portable programmer and encoder both have to be changed, in addition to the locks. I can only hope they'll do all of this, and get it audited to know that it actually works properly.
So they need to replace 4 million locks and other stuff too. Wouldn't they be worried that a new RE will then come by and expose new vulnerabilities? They should be concerned about that no matter what. That's why I strongly, strongly recommend them to have everything thoroughly audited by independent security professionals. Will they catch everything? No. Will they catch these sorts of horribly obvious vulnerabilities? Absolutely.
Thought the mfr issued a statement that they were fixing "most" of the locks with a physical deterrent and "firmware upgrade"? Am I missing something? Am I in the wrong thread again?? Fuck! What they've described as their plan to fix these issues is, I believe, not actually going to solve everything. Details are at Link to daeken.com
Does Onity actually think that people don't have access to Torx bits? I'm sure they realize that people have them, but that it'll add quite a few seconds to the opening process, rather than it being instant. It also makes it harder to not be obvious that you're doing it or that you were there.
Honestly, it's not a bad solution, it just should be paired with fixing the underlying vulnerabilities.
Caleb from Hackaday.com here. Think they'll just ignore it like bump keys? Seems like so much money and trouble to go back and fix everything. I think that it's public enough that they'll be forced to do the right thing eventually and release a fix/recall in the future. I just don't know when that'll be.
How did you become so smart? College? Self-learning? If so, what did you read or follow? Everything I know was self-taught. I just found interesting things and started doing them. I'm actually a high school dropout, no college at all haha.
Why wasn't your presentation part of the normal blackhat briefings (the last two days)? Did one need more than a standard 'briefings only' badge to see your talk? I was frustrated to be excluded, having paid so much money for entry. They decided they wanted a "fun" presentation for the Zero Day Briefings that happened the night before everything, and I was picked for it. You didn't need any special badge, but it was woefully under-advertised. Amazed I got as many people as I did, honestly. That said, the presentation sucked -- my timing was totally off, so I ran through my 60 minute slot in... 30.
How many people actually came to your presentation? I assume only those from the trainings sessions ($5,000+ entry) were able to see your talk? For what it's worth, I'm planning on doing another one of it which will be livestreamed with a public Q&A. Not sure when, but I'll announce it on Twitter (@daeken) and my blog (Link to daeken.com) ahead of time.
Thoughts on Ada vs. C? Never wrote much Ada at all, so I don't have much of an opinion on it. C is my mother tongue (along with x86 asm) effectively, so I'm naturally biased towards it.
How much did you enjoy Stuxnet? Never looked into Stuxnet at all; malware doesn't interest me in the least.
Is reversing as boring as I imagine it? Reversing for me is amazingly interesting. Don't get me wrong, it definitely gets old sometimes. But it's a combination of the ultimate application of the scientific method (ok, this is how it would work if I designed it... what assumptions can I make from there, and how can I check them? Rinse, repeat) and putting together mental jigsaw puzzles while only having hints of what the image should be. I love it.
How does it feel to work in a field society absolutely doesn't give a shit about? Are there actually organizations out there that care about IT security in a way that deserves the word? Law firms? Drug cartels? The Vatican? I'm in it for the challenge, above all else. While most people have no idea what I do and those that do frequently dislike it, it's immensely challenging and fun for me. The money helps too, of course.
Can you tell me any secret IRC rooms where reversers hang out to be away from the noobs? PM me if necessary. I don't really know of any. I hang out in a lot of IRC channels, though, where this sort of thing is discussed in passing frequently, but they're mostly social. PM me on Freenode (nick is Daeken) if you want to join any of them. Also, #lockresearch (Freenode) is a channel I started to continue the Onity work, if you're interested.
Do you know of any secure hard-drives where the ATA security feature cannot be circumvented by firmware update or overwriting certain disk sectors? If not, are there other ways to reach this goal like cutting write-enable pins to flash chips? Never looked into ATA security stuff, sorry.
What do you think about the "oh, we'll send out some screws to stick into the reprogramming hole" response from the vendor? Would you stay in a hotel room with that patch applied? I think it's actually a really nice temporary fix, and I think it's good to have it there even once these issues are fixed -- after all, there are likely others there. It's not perfect, but it raises the bar slightly, and that's a good thing. The rest of the response... not so much.
Honestly, the likelihood of anything happening to you (even if you left the door latch off and had a vulnerable lock) is tiny. I always throw the door latch/chain on when it's available, but I don't stress about it. If someone wants to rob me or whatnot, they'll do it.
Did you get any blow backs from this? Like did any hotels or security companies (the lock companies) get pissed at you? I'm sure a lot of people are pissed at me, but outside of some rude comments on the internet (gasp) I haven't heard a thing.
Favorite sandwich? Reuben with thousand island dressing. Pretty much all I ate for a week after moving to NYC.
Damn, I replied before that we had very similar introductions into computers and now this. Are you the black hat version of me, though we both love Reubens, our universal weakness? Lots of sauerkraut, no lean meat, go hard or go home? Wouldn't the blackhhat version of you eat pastrami sandwiches instead? Then again, I do love pastrami...
You're in NYC now? I just moved away after several amazing years. Enjoy! Try the burgers at Paul's on 8th. Good work on getting a repeatable hack on these locks published. Now I can finally use the pool at the Hilton! I've been in NYC for a little under two years, but I'm actually moving to CT tomorrow haha.
Living in NYC, moving to CT, computer knowledge... Are you Foamy? Nope, sorry.
How does one get started in reverse engineering? Learn C.
Learn x86 assembly (start by compiling C you write down to assembly and reading it, then get your friends to write some stuff and compile it for you, then decompile it back to C by hand)
Start digging into every protocol and file format you can find. Pick a goal (e.g. I want to write a model viewer for WoW) and jump into it.
Practice, practice, practice.
If you want to go down that path, shoot me a PM on Freenode IRC; nick's Daeken.
I see from other comments as well that you are an advocate of C. What are your thoughts on C vs C++? C++ has its place, much as I hate to say it. I've recently begun relearning C++ properly, along with Boost, so that I can make use of Cinder. I don't completely hate it.
One of the reports mentions your code/device failing to open some locks in a few cases. Was that just a matter of your stuff being mostly proof of concept code that needed refinement, or were the locks any different from what you had been working on previously? I know that the locks were different (in that they used slightly different boards), but the key problem was a timing issue with my Arduino sketch. The night before the Forbes demo, I hacked the sketch up to add some extra functionality (reading out the code key values needed to make master cards, in addition to just opening the door) and I'm fairly confident that screwed up the timing, which I calibrated carefully a long while back.
Outside of some random documentation issues and a little bug in the code, I'm fairly certain that the code that I released in my paper (largely the original code) works 100% of the time. That's definitely been what I've heard from people who have tested it. Not sure how I feel about that.
How I'd solve this: Port it to a much faster uC, run your communications code in a fast high priority interrupt handler, will be rock solid. I think a PIC32MX7 would probably do it. Yep, a number of people have built independent implementations on random uCs and had full success.
Have you ever used your skills for something mischievous? or for a personal gain? Mischievous, not really. For personal gain, nothing directly outside of just using my skills for work; my projects like these have ended up boosting my reputation and making it easier to get work, so that counts I guess.
Did you see the industry having to do a complete overhaul of their procedures? Or was that the point? That was the point, by and large. The Onity vulnerabilities are terrible and obvious, and obviously need to be fixed, but I think the bigger picture is: there are plenty of other lock vendors, and I'm sure they aren't that much better. Security -- real, hard security -- needs to be the norm here, and that won't happen without getting some knocks.
Did you ever fear repercussions by Onity? I mean you're hurting their business and public image quite a bit. Fear? Not so much; I feel I've done the right thing and stayed within the bounds of the law. I'm surprised there hasn't been an attempt to 'shut me up', though.
Are you working on your next big hack? If so, can you give us a taste? You know, at this point I have no idea. I'm amassing hardware hacking equipment at the moment (well, putting in orders; moving tomorrow, so I had to wait), so something will be coming eventually. Mainly focusing on work, demoscene stuff, and some independent consulting at the moment.
It's very likely this won't be the last of the lock stuff I do. I've got some things on my mind, but I have no idea what will come of any of it.
Do you have more information on reversing the Emotive brain-computer interface that can be publicly released? I wrote about my reversing process at Link to daeken.com It's currently maintained as part of Link to www.openyou.org
If you have any questions about it beyond this stuff, feel free to ask. That was a fun project.
Cheers, Cody. (Awesome name for a hacker, btw) Definitely something I'd like to get involved in when my programming skills are less shit. The brain hacking thing's sure to be a big thing in the future - especially now there's a cheap consumer virtual reality headset on the way. Well, if you're interested go ahead and jump on ##reversing on irc.freenode.net -- just started it to help people get up to speed.
Is there anything else that you like to do with your spare times besides reverse engineering things? In terms of tech, I spend a lot of time working on demoscene productions and writing random little apps/tools. Otherwise, just doing things with the girlfriend; seeing movies, going to plays, bowling, shopping, etc. I'm pretty boring, generally.
Occasional acid flashback? We don't talk about that these days. Not after the incident.
I heard that when they tested your hotel door unlock scheme on several randomly chosen hotel locks, it only worked on a small percentage. Covered that at Link to www.reddit.com
So, I see a lot of questions about security and whatnot, but I have something totally different to ask you. What do you do for fun? Things both in and out of the realm of CS. First part is covered at Link to www.reddit.com
Do you ever do random challenges for the heck of it (like writing a Befunge interpreter in Befunge, for example)? Or do you strictly do stuff like that for work? I do a lot of random challenges in programming/reversing/security. Bug bounties (see Link to www.ccbill.com ) are a lot of fun, and I used to do a lot of esoteric language work ( Link to esolangs.org ). Also, a lot of Project Euler; it's slow going, though, since I don't allow myself to Google anything, ask questions, etc.
That's pretty awesome. I don't think I'm good enough at programming for any serious bug bounties, but I totally respect people who are. I used to do a ton of work in esoteric languages (mostly Befunge '98 and Piet) but the esolang community seems to be all but dead lately. Hey, nobody starts out awesome. It takes a lot of work to get to the point where you can totally dominate bounty programs; start small and work up. Simple sites like CCBill (whose bug bounty program is unfortunately terminated. May or may not have been my fault...) are a great place to start.
Can you break the lock on my Chasity belt I lost the key?!? Given the 'Lord' in your name, I believe I will pass ;)
How many hotel owners do you think even care or will bother to change this? For the majority of the people staying, no one would even realize that this is a flaw in the particular hotel they're staying at. So how/why would owners actually go ahead and do this fix, especially since its going to be out of their own pockets? How do you convince them to change it? Lots will care, simply because of the black eye the industry as a whole is getting in the press right now. However, I think many won't do anything about it, simply because they do have to pay for it themselves. That's why I believe that the responsible response from Onity would be a proper recall, at their expense. It's the only way that hotels are going to fix this.
Is it true that you find this easy but riding a bike very difficult? Quite so.
What ever happened to that chair you hate? Hah. I have no idea. Do you still have the sound bite of "Fuck! I hate this chair" ?
Purely hypothetical of course, but would it have been possible to make a little more money...doing this the other way? Are those routes possible? Are there people who are interested? Where there's money involved, there's always a moral and immoral path; someone will always be willing to throw you some money.
Have you figure out, how to unlock the heart of a woman? I believe so, yes.
I may be very naïve with this question and stuff but I really want to get into hacking/security. However, I really want to learn a programming language too. With what programming language would you suggest that I start with? I was thinkig between Python and C. Thanks in advance! I absolutely recommend both Python and C. They're the two languages I use most commonly. From there, go for x86 assembly.
Oh man so much thanks for answering! I honestly didn't expect you to answer my little question in this thread of a 1000+ replies, thanks a lot man! I'm making an attempt to answer every reasonable question haha.
You said a while back here that you were working on a book about software emulation. Is this still in the works? It is. Sort of. I wrote half the book, scrapped it, wrote half the book, scrapped it again. I can't come up with anything that 1) teaches the things I want to teach, 2) isn't a million pages, and 3) actually makes sense to anyone but myself. If it's ever going to work, it's going to be in the form of a bunch of separate ebooks on specific issues, I think.
Why didn't you tell the lock manufacturer and hotel chains instead of blasting it to the entire world so everyone can break into any hotel room? Covered this all over the thread, but here: Link to www.reddit.com
Like a bikechain that can be broken through with lockcutters? I don't think security through obscurity works anywhere, but just like on the interwebs, anything that raises the barrier to entry makes things safer, even if not more secure.
Can you comment on my thoughts above? As for how long it takes to open a lock with the vulnerabilities described in the paper, you're several orders of magnitude off; you plug a device into the lock (which can be done in under a second), it opens in 200 milliseconds or less, and you're in.
Last updated: 2012-08-22 11:01 UTC
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