A nice bit of ‘synchronicity’ happened just as I had entered a few entries into my newly created (favourite) quotes page (yes, it’s still pretty empty, but I’ll soon copy a collection of saved quotes from another place). Someone shortly thereafter favourited a great video on Facebook from YouTube by TheraminTrees, which I hadn’t seen yet, called “Illusion of superiority”:
The fun bit came when I looked up the Wikipedia entry for the Dunning-Kruger effect for more information/references and saw the quotes near the beginning of the article. 
Update 20100708: What the Dunning-Kruger effect is and isn’t
‘Incompetent people think they’re much better than they actually are.’ which is the same as saying they have a skill deficit and this occurs when things are difficult, or require more mastery. I think the ‘captain and crew are in the life boats’ hypothesis is easy to see here once you take a look – not very ‘just’ still it is a straightforward, simple explanation that hits the mark.
I don’t know – it is a puzzle. Is it possible some are ‘fall guys’ left by smarter people who know enough to get out of the drivers seat and find a parachute?