Trump’s ego prevented him from making sound, well-informed judgments. He stepped into the presidency so certain that his knowledge was the most complete and his facts supreme that he turned away the expertise of career professionals upon whom previous presidents had relied. This amounted to a wholesale rejection of America’s model of governing, which some of his advisers concluded was born of a deep insecurity. “Instead of his pride being built on making a good decision, it’s built on knowing the right answer from the onset,” a senior administration official said.
