Why is the human brain “wrinkled?”

408 views

Every time I ask this question, I feel like the answer sidesteps an actual explanation. Yes, I understand that the folded, wrinkled shape allows for more surface area. The heart of my question is WHY is that important? Like, if the outermost layer of the brain is important, why couldn’t it just be a thicker layer instead of just squishing more outermost layer into a wrinkled shape?

In: 3