Comment author: NeedleFactory 10 April 2009 07:34:49PM -5 points [-]

Anyone got any other examples of things just about everyone here has seen the folly of, even though they're widespread among otherwise-smart people?

  • Belief in Democracy.
  • Belief in AGW (Anthropic causes as the main driver of Global Warming)

Echoing mattnewport , these may require specific knowledge to recognize their irrationality.

Comment author: NeedleFactory 07 April 2009 12:49:03AM 4 points [-]

I was in Mensa years ago -- most members I met were under-achieving smart people.