"Dunning-Kruger effect"?!?!?! Wow ... takes a psychological expert to recognize, define and even give a name to normal human behavior?!?!? Why can't a normal human recognize normal human behavior, even if it's behavior that's on the one end of the range or the other? Psychology is the most useless of all academic degrees and I make no apologies for that opinion. (and my first cousin is a psychologist, so I'm not totally disinterested).