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by EvanED
Sat Nov 04, 2006 1:39 am UTC
Forum: Logic Puzzles
Topic: 1=2
Replies: 9
Views: 5189

I've got a "higher-math" version of this: x^2 = x*x = x + x + x + ... + x [x terms] d(x^2)/dx = 2x d(x^2)/dx = d(x + x + ... + x)/dx = 1 + 1 + 1 + ... + 1 = x 2x = x So what this says is that either 2 = 1 (if x != 0) or that one of the above equalities only holds for x = 0. But all of the ...
by EvanED
Sat Nov 04, 2006 1:33 am UTC
Forum: Logic Puzzles
Topic: Puzzle for anyone except for eve [SOLUTION]
Replies: 58
Views: 20894

This is a good puzzle! I like! It's almost a crypto protocol problem, but there's a semi-subtle difference that totally change the dynamics. Specifically, Eve can't both intercept (and keep) one of the packages and pass it on to Bob at the same time. That makes all the difference, and is why this is...
by EvanED
Fri Nov 03, 2006 7:12 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 0179: "E to the Pi times I"
Replies: 161
Views: 54422

SpitValve wrote:Except when [i,j,k,l] are all different roots of -1... and ij=k, jk=l, li=j. And that's everything I know about quaternions.

ooh and you use them to rotate things.


And they can be used to make pretty fractals
by EvanED
Fri Nov 03, 2006 6:02 am UTC
Forum: General
Topic: Dvorak
Replies: 69
Views: 21370

This thread has inspired me to retry something I'd been meaning to do for a while, which is turn my capslock into a backspace. I know some people like to make it "Control", because in some keyboards that key was a Control key, but it's Backspace that sends my hands flying, not Control. La...
by EvanED
Fri Nov 03, 2006 5:49 am UTC
Forum: General
Topic: I'm so nerdy that I ...
Replies: 1377
Views: 202230

I learned Dvorak. That's quite cool, actually. Was it hard to make the switchover? In retrospect, was it worth the effort? I made the switch too. I think it is worth it, though it's not the easiest thing in the world. The biggest problem is that I now go to other computers that I don't have control...
by EvanED
Fri Oct 27, 2006 9:13 am UTC
Forum: Individual XKCD Comic Threads
Topic: 0175: "Automatic Doors"
Replies: 65
Views: 31234

I just thought of another funny story, this one from a magazine article by Douglas Adams, reprinted in A Salmon of Doubt. Amusingly enough, it has nothing to do with H2G2. So he was writing about a trip he took to Australia or New Zealand or some place down there, and he was staying at a "resor...
by EvanED
Wed Oct 25, 2006 2:50 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 0175: "Automatic Doors"
Replies: 65
Views: 31234

Now all they need is a speaker system so they can voice their concerns. "If you enjoy your ride which will be swift and pleasurable then you may care to experience some of the other elevators which have recently been installed in the offices of the Galactic Tax Department, Boobiloo Baby Foods ...
by EvanED
Mon Aug 07, 2006 6:42 am UTC
Forum: General
Topic: INTRODUCTIONS THREAD
Replies: 3985
Views: 685629

22/m/betwene locations Starting grad school at U Wisc in computer science. Graduating from PSU honors with CS and math majors. I also have a friend who is to zombies what you are to raptors. He has a complete dorm defense strategy in case of zombie invasion. (He also wrote a dozen-or-so-odd page pap...

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