Dunning and Kruger Figured Out Why the Crossover Effect Isn't a Good Idea

Most people overestimate their own abilities. A lot of people overestimate other people's abilities too. The people at the tip be top of competence tend to think other people are better at the thing than they are. And because of that, they think that they're going to do better or they think they are better at a particular task. So that's kind of done in Kruger in a nutshell.