Stupid people are too stupid to know that they're stupid. Fact.

A Cornell University study showed that people who bombed tests of logic, grammar and humor "grossly overestimated" how well they did on the tests.  "Not only do they reach erroneous conclusions," said the authors, "but their incompetence robs them of the metacognitive ability to realize it."

-- Via John Robb's Weblog. The link on the site requires registration.

Comment: In other words, if you think you're stupid then you probably aren't all that stupid - more a mild stupid... a vegetable korma kind of stupid.