“My fellow Americans,” said every presidential candidate ever, “It’s time for a change.” Not every presidential candidate has said it in so many words, but when you boil down the rhetoric, that’s what it comes down to. The reality, of course, is things are going to change anyway, no matter who occupies the White House. The only thing about it that stays the same is that the occupant will always take credit when things change for the better and blame someone else when they don’t.