Reminded of the discussion of survivorship bias in "Fooled By Randomness" (Taleb).<p>Something like a pool of 5000 investment managers each less likely to make a good decision than would a coin toss, would still produce a small population of "masters of the universe" after 5 years.
A similar technique was implemented and produced results using a Goldfish. [1]<p>[1] - <a href="https://www.youtube.com/watch?v=USKD3vPD6ZA" rel="nofollow">https://www.youtube.com/watch?v=USKD3vPD6ZA</a> [video] [warning:language]