We live in a world of complexity. Dealing with that requires he ability to analyze, and synthesize and integrate information from multiple sources, with an intense focus on attaining useful and accurate results. That is especially true for those in leadership positions.

Donald Trump has almost NO ability to deal with complexity. Examine his speech patterns and you will find unrelated gibberish sprinkled with things that he believes will be appealing to his listeners. He simply cannot maintain a train of thought for more than 2 or 3 sentences. He refuses to read complex materials in briefings or in preparation for group decision-making.

Instead, he requires those attempting to prepare him for difficult decision-making to present the information orally in a greatly oversimplified form. He simply dismisses facts and information that he does not want to deal with. If someone disagrees with him publicly, he tends to want to punish the dissenters. In short, when his “leadership” will inevitably create very bad “group think” (a la Irving Janis). He is a threat to any organization he heads.