Why is Encephalization Quotient such a strong predictor of intelligence for mammals?
EQ is the ratio of brain mass of a species to expected brain mass for their body mass (brain mass increases by the square/cube of the body mass).

A spectrum of EQ is pretty much a spectrum of intelligence, but the implications of this are complete nonsense, as it implies:
>increasing the size of your body but not your brain would make you more stupid
>a brain far larger than a human brain (and just as intricate) cannot possibly become as smart as a human brain, if that brain is in too large a body

It's stupid, yet true. How can this possibly make sense?