....That's right: the big, exciting announcement is nothing to do with Obama at all. It's that Donald Trump is still a birther-conspiracist weirdo. What it really reveals, of course, is that we – the media, the world, everyone – are all idiots for listening to anything this implausibly coiffured buffoon has to say, ever. Millions of people will watch his ludicrous video, millions more will go to his pointless Facebook letter, and every single one of us who does so will lose a tiny space in our brain that we could have stored a memory of, say, our first kiss,...