Substance and style -- it's easy to get them confused or mistake one for the other. And they're never entirely unconnected, though exactly how much so is a matter of debate. That's especially true when it comes to evaluating Donald Trump's performance -- a word particularly ambiguous in his case, as referring to either oratorical style or policy substance. The new president's detractors see a would-be autocrat threatening freedom of the press ("dishonest media") and the independence of the judiciary ("so-called judge"). They see a barefaced liar or fantasist who maintains that his 306 electoral votes (two of which...