Eli5 Why does having a brain with more wrinkles make you smarter?

Question

I’ve heard it explained as a density problem but that doesn’t make sense too me either because then wouldn’t having a smooth brain mean it’s more solid?

In: 113

Answer 1

I do not know the answer but the first thing i thought about was heat dissipation. I wondered if a higher surface area brain could run with more clock cycles without frying itself. Then I wondered if having some kind of blood cooling heatsink mounted to the back of your neck might help you become smarter in hotter climates. Probably not tho 😅