The gist... most incompetent people have no grasp on the bounds of their incompetence. Well, I knew this, for I once worked at... (those who know, know... those who don't can rather quickly discover this with an innovative google search).
But the more disconcerting finding:
On the contrary. People who do things badly, Dunning has found in studies conducted with a graduate student, Justin Kruger, are usually supremely confident of their abilities -- more confident, in fact, than people who do things well.
Hmmm... if you have a penchant for identifying incompetence... does that mean you are more incompetent than the incompetents? Is this the rubber-glue effect in action?