[wlievens]

> so would math and chemistry

Anecdotal evidence here: I'm pretty good at math, but failed several chemistry exams in high scool. I just didn't "get" it. Maybe I would be able now, because I'm better at thinking abstractly and systematically than when I was 16, but that would be because I'm a programmer today. For me the correlation definitely doesn't hold. Same goes (to a lesser extent) for biology for me.