He accepts less-than-credible denials from autocratic heads of state about nefarious acts. He disputes the existence of man-made climate change and insists that photographic evidence of the crowd at his inauguration is fake, part of a media plot to harm him.
Over the course of 21 months, President Trump has loudly and repeatedly refused to accept a number of seemingly agreed-upon facts, while insisting on the veracity of a variety of demonstrably false claims that happen to suit his political needs. In the process, he has untethered the White House from the burden of objective proof, creating a rich trove for professional fact-checkers, and raising questions about the basis for many of his decisions.
“It’s something else — it’s feeling, emotion, preference, loyalty, convenience of the moment,” said Michael V. Hayden, a former C.I.A. director.