Overly simplified view; conviction that you know all what you need; that others are similar to you or worse
Talk sense to a fool and he calls you foolish
Two things are infinite: the universe and human stupidity
Never underestimate the power of stupid people in large groups
Why Do Stupid People Think They’re Smart? The Dunning Kruger Effect (animated)
Jordan Peterson ~ The Uncomfortable Fact About IQ
Perilous Interventions: The Security Council and the Politics of Chaos – an outstanding book on the side effects of interventionism, mandatory reading in Foreign Affairs.
Related to 15(h) Excessiveness, 21(f) Arrogance, 21(g) Selfish Ambition, 18(g) Trickery, 18(h) Cheat
Incompatible / Confused with 24(c) Cleverness