History seems to suggest precisely the opposite hypothesis; namely that the larger your brain is the more benefit there is from further growth, at least with th

History seems to suggest precisely the opposite hypothesis; namely that the larger your brain is the more benefit there is from further growth, at least with this line of brain architecture. http://aquatic-human-ancestor.org/anatomy/images/brain-size.jpg http://aquatic-human-ancestor.org/anatomy/images/brain-size....