Guillermo Calvo of Columbia University and the National Bureau of Economic Research talks with EconTalk host Russ Roberts about the nature of macroeconomic crises and what we have learned or should have learned in the aftermath of the most recent one. Based loosely on his recent paper, "Puzzling Over the Anatomy of Crises," Calvo discusses a wide array of issues related to macroeconomics and the role of financial instability in economy-wide crises. Topics include the role of money, the problem of short-term lending in the financial sector, the black-box approach of modern macroeconomic theory and the forgotten economists we might want to reconsider.