A good illustration is Jerzy Kosinski's novel _Being There_ http://en.wikipedia.org/wiki/Jerzy_Kosinski, also in the film version http://en.wikipedia.org/wiki/Being_There - itself plagiarized from Adolf. Dymsza's _The Career of Nicodemus Dyzma_ http://en.wikipedia.org/wiki/The_Career_of_Nicodemus_Dyzma The plot of both novels is pretty much the same: an uneducated simpleton accidentally walks into elite circles where his semi-coherent ramblings and digressions are taken for words of wisdom, and the simpleton is offered positions of influence and power despite his lack of education and experience.
So it pretty much depends on the audience - what they want to hear and how they relate to a particular style of presentation and speaker's persona. If the "chemistry" is right, a speaker is viewed as a revelation even though what he is saying is not much different from opinions than can be found elsewhere.
Wojtek