Though it was based on very little evidence, many scientists thought that all mammalian brains, including the human brain, were made in the same way, with a number of neurons that was always proportional to the size of the brain.
その根拠となる証拠は 殆どなかったのですが 科学者が思っていたことは 全てのほ乳類の脳は 人も含め — 同じ様に出来ていて — そのニューロン数は 脳のサイズに 釣り合っているということでした