AP Photo/Charlie Neibergall, File A supporter holds a sign while waiting for President-elect Donald Trump to arrive at a rally, Thursday, December 8, 2016, in Des Moines, Iowa. G et ready, America: You're traveling into another dimension, a dimension not only of sight and sound but of mind, a journey into a wondrous land whose boundaries are those of imagination. That's the signpost up ahead, your next stop ... the Trump presidency. OK, maybe it's not quite the Twilight Zone . But the dimension we're entering is one where the president of the United States doesn't just live in an alternate reality, he exists in a place where there are no facts, where knowledge is for stupid people, where the most unqualified person ever to occupy the country's highest office can declare with his words and actions that he has contempt for the very idea that he might try to figure out what's going on and what he ought to do. It's a world where there is no relationship between cause and effect, between...