Comment by Nokinside

Very good point and observation.

I have observed the same but I have observed the exact opposite in academia and academically oriented corporate R&D in complex technical fields.

People with academic background can surprisingly humble intellectually. They may be arrogant when defending their point of view, but if they come up with a new thing they don't know about, they admit it even if it's common thing. By constantly asking simple questions every time they can't follow up something they are able to learn constantly.