A larger head makes death during childbirth easier, so I’d expect evolution to be optimizing processing power per unit volume even today.
Unfortunately, neurons are about as efficient in most species—they’re already as optimized as you get. For that and other interesting facts, see http://www.pnas.org/content/early/2012/06/19/1201895109.abstract
A larger head makes death during childbirth easier, so I’d expect evolution to be optimizing processing power per unit volume even today.
Unfortunately, neurons are about as efficient in most species—they’re already as optimized as you get. For that and other interesting facts, see http://www.pnas.org/content/early/2012/06/19/1201895109.abstract