Counter-Intuitive Knowledge is Fun

Gary Wolf

The idea of quantitative self-reflection - knowing yourself better through numbers - is only interesting if the knowledge you get is not more easily available elsewhere. It's the counter-intuitive knowledge, the "surprise" knowledge, that is the most fun, the most interesting, and perhaps even the most valuable. So, in the spirit of foiling intuitions, here's a fun simulator of some common (and one uncommon) logical puzzles, which, unless you are already a fan of this sort of thing, will tempt you to make intuitive (wrong) guesses about probabilities.

Link: http://www.cut-the-knot.org/probability.shtml