The Dunning-Kruger effect is a cognitive bias where the expertise and knowledge a person holds usually holds an inverse relationship with their expressed confidence on the topic in question
The Peak of “Mount Stupid” is the point where the cognitive bias of Illusion of Knowing is well-known and observed. People with limited confidence and expertise in their abilities tend to overestimate themselves while those with a greater degree of confidence and knowledge in their fields are often found underestimating themselves