Mr trump even appears proud of his lack of learning. He told The Washington Post that he reached decisions “with very little knowledge,” but on the strength of his “common sense” and his “business ability.” Reading long documents is a waste of time because of his rapid ability to get to the gist of an issue, he said: “I’m a very efficient guy.” What little trump does know seems to come from television: Asked where he got military advice, he replied, “I watch the shows.”