Extreme economic events have often challenged existing views of how the economy works and exposed shortcomings in the collective knowledge of economists. To give two well-known examples, both the Great Depression and the stagflation of the 1970s motivated new ways of thinking about economic phenomena. More recently, the financial crisis and its aftermath might well prove to be a similar sort of turning point. Today I would like to reflect on some ways in which the events of the past few years have revealed limits in economists' understanding of the economy and suggest several important questions I hope the profession ... (full story)