He’s just a sharp fool. It’s someone who is good at the kind of smarts that lets them multiply numbers quickly, and this has led them into a trap of believing t

He’s just a sharp fool. It’s someone who is good at the kind of smarts that lets them multiply numbers quickly, and this has led them into a trap of believing that they are a genius who’s never wrong. These people have very rigid mental models of the world, as they tend to not question their own understanding.