Dunning-Kruger as a Vicious Cycle
Dunning and Kruger often refer to a "double curse" when interpreting their findings: People fail to grasp their own incompetence, precisely because they are so incompetent. And since, overcoming their incompetence would first require the ability to distinguish competence form incompetence people get stuck in a vicious cycle.
"The skills needed to produce logically sound arguments, for instance, are the same skills that are necessary to recognize when a logically sound argument has been made. Thus, if people lack the skills to produce correct answers, they are also cursed with an inability to know when their answers, or anyone else's, are right or wrong. They cannot recognize their responses as mistaken, or other people's responses as superior to their own."