The Dunning-Kruger Effect

Smart people are known to sometimes underestimate themselves and their own abilities, and it can and has often been said that ignorant people are quite the opposite of that in that they are bold in their opinions and very certain of their brilliance and abilities. This is a cognitive bias that is referred to as

The Dunning-Kruger effect

and it maintains that this scenario in life occurs because smarter people are likely to assume that tasks which are easy for them to do are also easy for others to complete as well. And on the flip-side, the less intelligent and ignorant individuals are going to be so clouded by their certainty that they won't have the ability to even recognize their own shortcomings in life.

The dunning-kruger effect is the label given to describe the cognitive bias that is present when less intelligent individuals suffer from the illusion of feeling superior and are thus unable to honestly go about assessing their own abilities.

It was a term that was coined thanks to David Dunning and Justin Kruger. They conducted their research at Cornell University and it prompted them to find that incompetent and less-intelligent people will be less likely to recognize their own lack of a certain skills or be able to honestly address their inadequacy.

So in essence, they are saying that the stupid people are too stupid to realize that they are stupid.