Question: Debates between advocates of "free trade" and advocates of "protectionism" have gone on for hundreds of years. How aware are you of current debates, which are now often framed in terms of pro- and anti-"globalization"? Do you have more sympathy for one side than for the other? What do you think you need to know more about-in terms of theories or real-world facts-to be able to decide with confidence whether increased world trade, in a specific situation, is a good idea?