I think there's a better explanation at https://www.talyarkoni.org/blog/2010/07/07/what-the-dunning-kruger-effect-is-and-isnt/ https://www.talyarkoni.org/blog/2

I think there's a better explanation at https://www.talyarkoni.org/blog/2010/07/07/what-the-dunning-kruger-effect-is-and-isnt/ https://www.talyarkoni.org/blog/2010/07/07/what-the-dunning-..., which also discusses some possible alternative explanations.