A friend of mine would go on about Sherpas' all the time. He and a buddy have done a bit of travelling into Nepal.
The post on opinion made me cringe. I keep running into discussion where opinion and generalisation are used as anti-thought words, to kill off discussion. To end thought is not the best expression of thought.
A word... reification, and it usage as a fallacy.
Reification (also known as concretism, or the fallacy of misplaced concreteness) is a fallacy of ambiguity, when an abstraction (abstract belief or hypothetical construct) is treated as if it were a concrete, real event, or physical entity.[1] In other words, it is the error of treating as a "real thing" something which is not a real thing, but merely an idea.
http://en.wikipedia.org/wiki/Reification_%28fallacy%29
Experts assume their abstractions are real so very often. The assumption of reality, to ponder and create a reality, is not the same as reality. It is a fun task to ask of the ideas that we encounter, is this a reification? Marxists used it quite a bit, but it holds.