A couple of you have suggested linking to this article by Eric Levitz that says, "If the President Is Innocent, Then He Is Insane." I'm not sure I completely buy it.
Maybe it's spot-on but I keep thinking about a TV producer for whom I once worked. He was a very successful, wealthy fellow who'd never expected to be anywhere near as successful or wealthy. He had a sudden cluster of hit shows and couldn't explain why. When someone asked him what he'd done right, or even when he asked himself, the answer was "I dunno," which is not an acceptable answer, especially when it's you asking about you.
He finally decided, based on no evidence whatsoever, that it must have been his instincts. In fact, he was sure he was right because, hey, his instincts told him he was right to think his instincts were right to think it was because his instincts were right to think…etc.
So when he made illogical decisions and asked to explain them, he really couldn't. He'd make up some silly reasons or sometimes he'd say, "This is what my gut tells me." And it was on that basis that he operated a production company that did all sorts of odd things no one could understand. Most of them made the mistake of assuming there was some rational, devious explanation for what seemed to most of us working on the show when in fact, what he was doing was playing hunches. Maybe that's what Trump is doing. Then again…