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February 04, 2021
Q: Is there a core question that has guided you through your career?
I would say it’s more the case that I’ve had an opportunity to reinvent myself every decade. I use the tools of microeconomics and game theory, so that’s consistent, but the nature of the problems considered has changed.
I started off working on problems of voting and aggregating people’s preferences. I worked on problems showing the existence of an equilibrium in cases where demand functions were quasi-concave rather than just concave. If that sounds technical, that’s because it is, in fact, technical. At that time, I was based in economics departments, first at Harvard and then at Princeton. Those are the types of questions that are often addressed in economics departments.