For the past couple of months I have been in the thrall of a game called Candy Crush Saga. It’s about matching little colored thingies on your iPad or phone. I am not going to explain it in any more depth, because that would just make this whole discussion more humiliating. However, if you stick with me, I am going to try to use it to make a sweeping point about public policy, ending with some severe questions about the political career of New Jersey Gov. Chris Christie. About the game: It’s been played about 150 billion times over the…