David R. Henderson is a research fellow with the Hoover Institution and an associate professor of economics in the Graduate School of Business and Public Policy at the Naval Postgraduate School. He is author of The Joy of Freedom: An Economist’s Odyssey and co-author, with Charles L. Hooper, of Making Great Decisions in Business and Life (Chicago Park Press.) His latest book is The Concise Encyclopedia of Economics (Liberty Fund, 2008.)