[smt88]

It isn't fool-proof, but there is a lot of research into the phenomenon that groups of humans are pretty good at predicting outcomes (much better than most individuals). I forget the math behind it, but it makes a lot of sense mathematically.

Here's a book all about it: http://www.amazon.com/The-Wisdom-Crowds-James-Surowiecki/dp/...

[masonhipp]

Very true. There's another one floating around somewhere about how good we are at estimating the IQ of other people. Pretty interesting.