Cognitive neuroscientist explains why stupidity is an existential threat to America

It may sound like an insensitive statement, but the cold hard truth is that there are a lot of stupid people in the world, and their stupidity presents a constant danger to others. Some of these people are in positions of power, and some of them have been elected to run our country. A far greater number of them do not have positions of power, but they still have the power to vote, and the power to spread their ideas. We may have heard of “collective intelligence,” but there is also “collective stupidity,” and it is a force with equal influence on the world. It would not be a stretch to say that at this point in time, stupidity presents an existential threat to America because, in some circles, it is being celebrated.
Although the term "stupidity" may seem derogatory or insulting, it is actually a scientific concept that refers to a specific type of cognitive failure. It is important to realize that stupidity is not simply a lack of intelligence or knowledge, but rather a failure to use one's cognitive abilities effectively. This means that you can be “smart” while having a low IQ, or no expertise in anything. It is often said that “you can’t fix stupid,” but that is not exactly true. By becoming aware of the limitations of our natural intelligence or our ignorance, we can adjust our reasoning, behavior, and decision-making to account for our intellectual shortcomings. 
Cognitive neuroscientist explains why stupidity is an existential threat to America