The Unfair Question: Is Gravity a Force?

Hans-Joachim Watanabe: I don't know that Einstein was that philosophical. He says quantum physics is the first physical theory to just say there are things that happen that don't have any explanation or cost, they just are random. And so for physicists to say we've discovered that there's stuff in the universe that we can't explain that doesn't make sense, that'sRandom is a very hard thing for physicists to swallow. But this is one of these truly weird things that made me stop and realize if I don't understand the universe, my understanding of God is going to be affected as well.