 Well, I think that we have a lot of experience with what things have happened in the past, what's the data, we have different countries, and science can give us a way of analyzing those. In fact, if you think about an economy as an experiment, we just see little pieces of data that come out of this experiment, and we try to infer what was really going on inside the economy. And science is what that model tries to do, and so we are always trying to use science to try to figure out how the economy works and how monetary policy can make it better. I think the use of new statistical techniques based on big data science is a very attractive way to approach some of these questions, and I found that very stimulating this morning.