random silly thought
Jun. 26th, 2002 05:07 pm![[personal profile]](https://www.dreamwidth.org/img/silk/identity/user.png){kind=small}
jinianHuman brains have gotten much bigger during our evolution, but some cases of midgets and hydrocephaly prove that the brain doesn't necessarily have to be as large as it often is. So why is it big?
Well, maybe being social is assisted by a large facial area. Increased facility for expression is given by the angles of the human face (as opposed to chimpanzees even), and maybe it's useful to be able to see your tribe looking at you from a distance. So the head got bigger as a social advantage and the brain grew to fill the available space.
Look at me, I'm Desmond Morris!
Well, maybe being social is assisted by a large facial area. Increased facility for expression is given by the angles of the human face (as opposed to chimpanzees even), and maybe it's useful to be able to see your tribe looking at you from a distance. So the head got bigger as a social advantage and the brain grew to fill the available space.
Look at me, I'm Desmond Morris!
