And one of the main reasons our brain got so big is because it got a new part, called the "frontal lobe," particularly, a part called the "prefrontal cortex."
Viens no galvenajiem iemesliem,  kādēļ mūsu smadzenes tā pieauga, ir to jaunā daļa — pieres daiva. Īpaši, tās daļa — prefrontālā garoza.