This phenomenon is called “the Dunning-Kruger Effect,” named for David Dunning and Justin Kruger, the research psychologists at Cornell University who identified it in a landmark 1999 study. The Dunning-Kruger Effect, in sum, means that the dumber you are, the more confident you are that you’re not actually dumb. Dunning and Kruger more gently label such people as “unskilled” or “incompetent.” But that doesn’t change their central finding: “Not only do they reach erroneous conclusions and make unfortunate choices, but their incompetence robs them of the ability to realize it.”2
