There's a lot to be said for a good question. Good answers are often crucial, important but sometimes the best questions can't be answered and we learn something from our attempts to answer them. You generally don't thrive in academic life right now if you raise a big question or a good question and struggle to answer it. I think there are also two other functions that big prices in economics should actually have in mind. One is what I call the signaling function. In other words it should really signal the issues, the topics that are important. There are many big questions that will come in a minute but you cannot have the definite answer on that. It's nevertheless one area that has been worked