 I think there are several areas that are really exciting. For me, artificial intelligence is a very exciting thing. It's not exactly a science, but it's coming. And the huge teams of people are working on it. IBM is not the only one with their Watson that wants to have a kind of artificial intelligence. There's enough compute power already on the Internet that you could, and if you knew how to structure it, the Internet could become conscious. We don't know how to structure it, so it isn't. And maybe we wouldn't like it if it were, but it's probably possible. So that's one. Chemistry and biology are really exciting because now you can manufacture practically anything you could like. We can probe the innermost workings of cells. We can read the genetic code. We can find out how to make things that are helpful for our own health. We can even grow artificial organs in a few cases already. So there's probably no limit to how far you can go with that. I don't think we're necessarily going to be able to live forever, but we could perhaps live good lives for longer than we do. So there's a huge amount of public support for that. We'd like to be healthy. And it's the biggest area of scientific research in the U.S. is medical, I think, medical and biological. Physics is exciting because we are still discovering the most amazing phenomena, ranging from the early universe and the strangeness of the elementary particles that we study to mysteries of quantum mechanics. Quantum entanglement is a coming subject. The possibility of quantum computing is right in front of us. It's hard. We don't know how to do it yet, but we can imagine ways that it might work. So all of these things are tremendously exciting to me, and if I were starting out as a neuroscientist, I would be amazed at how many choices there are. I don't think you can tell a student what to do. I think you can say, well, go find out what's current at your place, and something will be exciting.