Trump trap: Epistemic arrogance

Donald Trump displays continuing ignorance in so many domains despite abundant evidence of the truth. A major decision-making trap that he exhibits is epistemic arrogance, in which we think we know more than we really do know. As our learning increases, we grow even more confident in our knowledge and tend to ignore our ignorance and what we still do not know. The prevalence of overconfidence appears to pose a serious obstacle to effective learning, problem solving and decision making.