Dunning-Kruger

This is new to me, but no doubt many others have heard of the Dunning-Kruger effect. (I don’t know if this is a real thing or a joke.)

Dunning-Kruger is a cognitive bias where people are too stupid to realize they are stupid. They are unable to recognize their own incompetence. 

Consider “the criminal case of McArthur Wheeler, who robbed banks while his face was covered with lemon juice, which he believed would make it invisible to the surveillance cameras. This belief was based on his misunderstanding of the chemical properties of lemon juice as an invisible ink."  (From Wikipedia)

Or consider the leader of the Free World, who cannot grasp  what scientists tell him, so he tells us that the coronavirus may “magically disappear.”