EF,
I mentioned these. Not every American is as dumb as you claim....just most....LOL (j/k)
I know. I would be dumb to think Americans are really more dumb than other nations. It's just that their national myths (for instance concerning their role in world history) take on preposterous proportions. Most superpowers have this problem, but in addition you have the best propaganda movie industry which dims the perspective on history many Yankees have.
As an example: ever heard of the German Enigma encryption machine? I wonder what the common belief about how it was captured is in America.
Pole