[VanShuyten]

Read this. It's 10 years old, but it explains everything:

Unskilled and Unaware of It: How Difficulties in Recognizing One’s Own Incompetence Lead to Inflated Self-Assessments Journal of Personality and Social Psychology Selected Article © 1999 by the American Psychological Association For personal use only—not for distribution December 1999 Vol. 77, No. 6, 1121-1134

[Right Wing Assault]

Unskilled and Unaware of It: How Difficulties in Recognizing One’s Own Incompetence Lead to Inflated Self-Assessments

Thanks. I've met a lot of those confident incompetents.

We have one as president.