Quote from CoolTraderDude:
Well Ricter... I think we would end up in a "Chicken and the egg!" debate. That is... Do genes create society or does society create genes? Really, I know of no way to answer that.
Genes create culture. Natual selection determines those that thrive and those that don't.
How big of a brain do you did you need to slit the throats of the tribe "next door" and steal their women and food??