Comment Re: Progenitors? (Score 0) 686
I would recommend an excellent book "The Red Queen" by Ridley.
It explains why sexual selection pushes many organism features that are in fact handicaps for survival.
Human brain has all the characteristics of a feature evolved to be a handicap. It uses 40% of total energy, it evolved quickly, and we seemed to survive without it being such a big organ before.
Once you have a large brain and language, it becomes harder to just look at the genetic evolution, since it becomes a genetic/memetic evolution. And it is this person/culture complex that is seemingly most evolutionary successful thing.
One could also argue that is it in fact bacteria that are evolutionary most successful organisms on earth.
I would agree that it is hard to argue that a huge brain is a survival handicap. It may have started that way, but it got useful in all sort of ways. And also, we all look at this problem from the brain's perspective, since this is what we actually are, and not from the genes' perspectives. Also, being in a long non-food crunch situation also makes those 'details' hard to see.