From Reinhard Selten, "Evolution, learning and economic behavior," Games and Economic Behavior 3, 3-24 (1991)
Gene substitution by mutation is very slow. Therefore fitness maximization or evolutionary stability can only be expected as a long run equilibrium phenomenon. It is dubious whether any mutations have changed human economic behavior in the relatively short time since the beginning of the dispersion of agriculture about 10,000 years ago. This mean that biologically man may still be a hunter and gatherer not very well adapted to the necessity of long run planning. This may be the reason why some Ph.D. dissertations take much longer than planned. In any case it would be silly to expect that man is genetically adapted to modern industrial society.Для справки о Зельтене: http://nobelprize.org/nobel_prizes/economics/laureates/1994/