I'm not sure our larger brains are a plus.
Reminds me of one of my favorite jokes:
A man is in a terrible car accident, and is lying in a coma in the hospital.
The doctor explains the grave situation to the gathered family. βYour father, your uncle, and your brother is gravely Ill. He has a massive brain injury from which he cannot recover. There is an option, however, it is quite risky. We can perform a brain transplant surgery, implanting a donor brain.β
The family mulls this over, and then asks the doctor how much this will cost?
The doctor replies, βWell, it is a complex surgery, which will cost $50,000. The donor brain will cost an additional $50,000 for a male brain, or $5,000 for a female brain.β
The men in the family share knowing smiles and try not to look too smug at the high value of their brains.
Then a little girl asks the doctor, βSay, why are womenβs brains so much cheaper?β
To which the doctor replies, βBecause they are used.β