Couldn't agree more with GTE. Pilots are operators, not maintainers or designers. A taxi driver doesn't need to know how a differential works or the molecular structure of his tyres.
As an ex aircraft maintainer (who did have to know how stuff worked) I'm constantly surprised at some of the banter regarding how aircraft fly/how instruments work etc etc in our crewroom. I keep my own council because no one likes a smart arse but there are a lot of strange ideas floating around. Having said that, strange ideas have no bearing really on how well a pilot flies. I might believe that there's a little guy in the engine cowling who turns a crank that spins the prop, it doesn't really have a bearing on how good or bad a pilot I am.