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Critics argued that the 2007–09 financial crisis was failure of macroeconomics, locating its source in the dynamic, stochastic general-equilibrium model and calling for fundamental re-orientation of the field. Critics exaggerated the role of DSGE models in actual policymaking, and DSGE modelers addressed some criticisms within the DSGE framework. But DSGE modelers oversold their success and even claimed that their approach is the sine qua non of competent macroeconomics. The DSGE modelers and their critics renew an old debate over the relative priority of a priori theory and empirical data, classically exemplified in the Measurement without Theory Debate of the 1940s between the Cowles Commission and the National Bureau of Economic Research. The earlier debate is reviewed for its implications for the recent controversy. In adopting the Cowles-Commission position, some DSGE modelers would essentially straight-jacket macroeconomics and undermine economic science and the pursuit of knowledge in an open-minded, yet critical framework. [ABSTRACT FROM AUTHOR]