"There is apparently some connection between dissatisfaction with oneself and a proneness to credulity. The urge to escape our real self is also an urge to escape the rational and the obvious. The refusal to see ourselves as we are develops a distaste for facts and cold logic. There is no hope for the frustrated in the actual and the possible. Salvation can come to them only from the miraculous, which seeps through a crack in the iron wall of inexorable reality. They ask to be deceived. What Stresemann said of the Germans is true of the frustrated in general: "They pray not only for their daily bread, but also for their daily illusion.” The rule seems to be that those who find no difficulty deceiving themselves are easily deceived by others. They are easily persuaded and led." - Eric Hoffer

Or doing a Faux Noise and simply pushing it on others.

Stupid is fear of not conforming to a widely held belief.

How would it be possible to, say, believe the earth is flat when you know that the earth is not flat?
Stupid IMO is not knowing the truth and being unable to tell one from the other