[aarghh]

Humility is very often correlated with smartness. I have seen this as a common quality in most great engineers and scientists: truth comes first.

[mlinsey]

I've noticed the same thing. My hunch is that the work involved to reach the pinnacle of human understanding in a certain subdiscipline makes one acutely aware of just how far they are from that same level of understanding in every other subdiscipline. On the other hand, high-IQ dilettantes often think they already know everything.