Sunday has got to be most depressing day of the week, and it doesn’t help that, since daylight savings time has been in effect, night falls at a precipitously early hour. It must be these Sunday doldrums getting to me when I can’t help but think that the world has fallen into shadow, that we’re knee-deep into a potentially miserable recession, that the war we’re waging in Afghanistan is a kind of murderous folly, that the business I’ve begun might be a foolish and fruitless conceit, that my girlfriend and I are going to break up, that the Yankees are going to lose the World Series tonight.