I agree that overconfidence is harmful, and likely the most harmful part of the human psyche. Some examples: Nazis, slavery (racism in general), communism, soci

I agree that overconfidence is harmful, and likely the most harmful part of the human psyche. Some examples: Nazis, slavery (racism in general), communism, societal misogyny (exists in every society of any size), LGBT hate, religious hate, and really any type of bigotry or hate based on incomplete, inaccurate information. In every single one of these cases, the perpetrators of the atrocity are overconfident in their ability to judge others' true nature and don't realize that they are wrong. I think this is the type of overconfidence that is most harmful and they type that Kahneman is referring to.