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I clicked on this topic in order to make this suggestion. To expand on it a little bit, I was a math major and read Spivak's 'Calculus' after I had already taken real analysis. I found it delightful - it really approaches the topics from first principles and unlike many calculus textbooks actually goes through the effort of presenting proofs of the theorems. Highly recommended.

As some recreational reading, less suiting the original request, I very much enjoyed David Foster Wallace's 'Everything and More: A Compact History of Infinity' (http://www.amazon.com/Everything-More-Compact-History-Infini...). DFW is not for everyone, but I enjoyed it a lot. Maybe just check it out of the library first to see if it's for you.


I appreciated DFW's book for even attempting to do a popular treatment of what we would now call the history of real analysis. But there were some serious technical problems with it: http://www.ams.org/notices/200406/rev-harris.pdf


I can't leave that hanging - what is the _least_ sexy part of enterprise security?


Configuration management and compliance.


Compliance, a million times yes.


The Graded Go Problems for Beginners (http://www.amazon.com/Graded-Problems-Beginners-Beginner-Ele...) has four volumes of increasingly difficult tactical problems. For the strategic side of things, I enjoyed Janice Kim's Learn To Play Go series, which has five or more volumes (http://www.amazon.com/Learn-Play-Go-Masters-Ultimate/dp/1453...)

And, of course, with Go you have a nice progression from learning to play on the 9x9 board for tactics, the 13x13 board to begin learning strategy, and the 19x19 board to play the real game. And thanks to the handicapping system, you can play much stronger players with both of you playing your hardest and both with a chance to win.


You might also enjoy http://www.youtube.com/user/kingscrusher

He comments on professional matches, but the part of his feed that I enjoy are the 1/3/5 minute time control games he plays. He is very good at articulating his thoughts during the game, and I find that much more engaging that listening to analysis of alternate lines that's more common in commentated chess matches.


See also the economist at Valve, who had an article about the Team Fortress 2 online economy: http://blogs.valvesoftware.com/economics/arbitrage-and-equil...


I mean, the J Software app is basically that, although J instead of APL. The terseness makes for a pretty good programming environment despite the slow input speed of the virtual keyboard. You don't get the unicode APL customisation you're talking about, but it's pretty close.


Super fun stuff. I have alternating esotropia (http://en.wikipedia.org/wiki/Esotropia) and also cannot see in stereo in normal life. 3D movies that rely on filters or polarisation also do not work for me. I went to a supercomputing demo of a 3d visualisation company that used occlusion like Rift apparently does, and it worked! It was really mind-bending. They were showing a visualisation of a variable in two dimensions, so they displayed a 3d surface. (I believe this was stuff targeted at the oil/gas industry)

My sensation was that given the size of the thing, it should not all have fit in front of me. That is, given how far away the back was, and how large it looked, the front of it should have been behind my head, but it wasn't. In a later meeting with a visual specialist, we confirmed that this was typical for people who haven't experienced 3d to feel about 3d. We also convinced ourselves that there was no way for me to get that with just corrective lenses.

How fun for this tech to hit the mainstream! For reference, the older tech was based on, I believe, the CAVE stuff (http://en.wikipedia.org/wiki/Cave_automatic_virtual_environm...)


It was relatively common in the CAVE to have someone see in stereo for the first time. The shutter glasses have LCDs that are synchronized to flip black and then clear, alternating eyes. The projectors are synchronized to this flip so they show the correct projection for the correct eye. This technique sometimes defeats eye dominance problems that impair stereoscopic vision. Because stereoscopic vision accounts for only about 30% of our ability to judge distance, behind occlusion and motion parallax, it was amusing but not life changing.


That lines up with my experience. The alternating esotropia means that at any time one of my eyes acts as dominant, but it will change based on which direction I look and is also under voluntary control.

I have played ultimate frisbee for years quite successfully, and people were usually surprised when I mentioned I have no depth perception. I've met another A.E. person who was a good softball player. The hard part is when I have to look up at blue sky to catch something; the size difference between "can jump to catch it and cannot" is not very big, and there are no parallax/overlapping cues to draw on.

Interestingly, one friend said "Oh, that explains it" when he learned about my eyes. He noticed that I never look into a cup or glass straight-on when filling it, but instead look at it from the side so I can see how full it is. The growth of the circle of the top-of-liquid is small enough that I will heavily underfill a glass rather than risk spilling. As you suggest, it's not deep life-changing stuff, but it is quite a novelty!


This is exactly the sensation I get with stereo vision. I was told that I'd had a lazy eye from the age of 2 or 3. No one ever gave me details other than that, and I always believed this shifting-dominant-eye effect was a result of the lazy eye. It may be related, but I never found out about the effect by researching lazy eye, aka amblyopia.

How did you come to learn about esotropia? It sounds like the doctor might have actually diagnosed me with that, as I distinctly recall having to wear a patch very early on in life.

Ánd finally, thanks for elucidating on the name of the condition and how you're affected by it. It spot on describes my experience and I'm glad to know a bit more about myself.


The esotropia was diagnosed when I was a kid. In fact, the "visual specialist" I visited as an adult was actually a pediatric doctor, because they're the ones who have the most experience with esotropias. I don't have any memory of being diagnosed with it; it happened when I was 3 or 4, I believe. My left eye is also mildly dominant; if I'm looking straight ahead it will tend to win control. When it was diagnosed, they did an eye surgery to correct the tracking of the off-eye, and they tried to get me to wear glasses to further battle against eye-dominance, though I was a reluctant participant in that experience.

I learned the alternating esotropia name from my parents, probably during high school or so. I don't think I was able to name it before that, and I don't remember the context in which they shared it. Probably I was complaining about the stereograms that were popular at the time; I have never been able to see anything in those.

Aside from what I've mentioned so far, I also get a free bonus of driving my wife a little crazy; she always tries to figure out which of my eyes I'm looking out of when we're talking face-to-face. It's nice to have a bit of novelty that is, all-in-all, not really that big of a deal. It's fun to talk about, though, as evidenced by the popularity of this thread.


I don't know, even the non-HFT side of computers in trading is interesting. I looked at http://raudys.com/kursas/2002%20Trading%20and%20exchanges.pd... the other day, which is a set of chapter-excerpts from "Trading and Exchanges". It was a great read in a "Here's how the sausage is made" kind of way. It offered a very pragmatic overview of how and why things are the way they are; it certainly enticed me into getting the full book.


A piece of trivia: "Bernard L. Madoff Investment Securities" is listed as a well-known example of a sell-side dealer (the publishing date is 2002). Understandably, some other firms no longer operate under their listed names.


vimtutor is pretty good, actually.

Outside of that, http://yanpritzker.com/2011/12/16/learn-to-speak-vim-verbs-n... has a nice explanation of the editing worldview, which ties in with Steve's quote in http://learnvimscriptthehardway.stevelosh.com/chapters/16.ht..., "The idea of operators and movements is one of the most important concepts in Vim, and it's one of the biggest reasons Vim is so efficient. We're going to practice defining new motions a bit more, because extending this powerful idea makes Vim even more powerful."

Check out http://www.moolenaar.net/habits.html, http://stackoverflow.com/questions/1218390/what-is-your-most..., and maybe http://vimcasts.org/episodes/archive?

I've been using it for about a decade, so I think I've lost the beginner's mind to evaluate whether these are really the right entry points. Lots of people are passionate about vim, though; some googling should find you the exercises that will help you the most.


That reminds me of using Docbook to write the book, then using the various transformation engines to turn the docbook into PDF. I setup some docbook documentation that just used xsltproc to generate HTML and PDF from the same source. http://stackoverflow.com/questions/2615002/how-to-generate-p... has some notes about the process.

For my part, I enjoyed the semantic markup it gave for something as big as a book, with auto-generating index and glossary as well. It's a lot of work, but the output reflects it. Looking at the HTML in the first chapter there, the spans with "term" and "menuitem" make me think something like docbook is going on behind this too.


The docbook tool chain is a nightmare to setup though.


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