Not saying that business people are less intelligent (far from it, good business people are as rare as good hackers). But pointing out that in the business world, confidence is a signaling mechanism for success when they speak to others outside the business field. This easily gives rise to an impedance mismatch between the business world and the technical worlds. Appropriately enough, the very best business people I know when talking about an issue their own field are just as doubtful about themselves as good technical people.
Fractal difficulty of a field is the impetus for a lot of this doubt, and it seems pretty opaque to outsiders in every field I've seen. This seems to be prevalent here when many hackers do not acknowledge the difficulty of marketing, sales, accounting, etc.
