Everybody likes to talk about the weather. It’s a fair bet that commenting on it and speculating about it account for a fairly significant percentage of the world’s conversations on any given day. There is an oft-quoted saying (attributed to many different comedians and broadcasters) that if you have no other information, no research, you can fairly accurately predict the weather tomorrow by simply saying that it will be substantially similar to the weather today. And you know what? You’ll be right a lot.