It’s like the joke about the drunk and the streetlight: you see some drunk guy looking for something under the streetlight and you go over to him and ask, “What’s the matter?” He says, “I lost my key.” You say, “Where did you lose it?” He says, “On the other side of the street.” You say, “So why are you looking over here?” “Well, this is where the light is.” That’s the way the sciences work: you look where the light is—because that’s all you can do.
