You know, some mammals can walk within few minutes after birth. And for human beings in takes few years to be able to walk. Obviously, nature was able to 'pre-wire' our brain so we would be able to walk immediately. It would increase a chance for survival for humans. It could be a benefit BUT... but nature had REMOVED that ability. I say "removed", because more primitive beings have that ability. So my question is, what HUGE benefits nature and natural selection got from removing that ability and from the prolongation of the period of being total helpless that had completely overweighted obvious benefits of not being absolutely helpless?