I feel it is the hacker mentality. People here are very intelligent but (some often) make the mistake of feeling as though their experience and success in one domain is applicable to multiple, that they are, in fact, renaissance men and women when in fact they are largely unskilled in the Domains they are attempting to analyse in depth.

As someone heavily involved in medicine j see this all the time when the subject matter is something medical or biological- people really so feel that they can talk about issues of medicine and science with just the same authority as they can when otherwise discussing programming/whatever their day job is, when in fact they dont know just how much they don't know