I think "rough" is understating it. Galileo finding different sized objects fall at the same rate, knew more about gravity than we know about intelligence. By a

I think "rough" is understating it. Galileo finding different sized objects fall at the same rate, knew more about gravity than we know about intelligence. By analogy, in terms of gravity, our understanding is at the "Things fall downwards" stage. The Newton's Laws of Motion for intelligence are a long ways off yet.