|Peter Boettke|
I was flying back from Paris on Monday when the announcement was made of the award to Sargent and Sims. When I turned on my phone, I had multiple messages from family, friends and former students asking for my reaction to the prize. My reaction is both one of great respect for the brilliance of Sargent and Sims (and acknowledgment for what they did within economics to change thought and practice), and a deep sense of dread for what their contributions represent to the state of economic thought and practice. Yes, the political economy implications of some of the earlier work done by Sargent is consistent with my own priors. Yes, the critique of Keynesian theory and empirics was welcomed. But both Sargent and Sims represent scientism run amok, and the attitude (especially of Sargent) has further killed scholarship in economics and political economy in the search for more rigorous science.
David Henderson is more positive, Tyler Cowen I would say even more so, and Arnold Kling less so. Ironically, my position is somewhere between Cowen and Kling, as laid out above. Cowen's summary of the contributions and their influence on the profession is excellent. Kling's reaction to that influence I think is correct, but I think the situation is much worse than his dismissal as historically unimportant suggests. Economics was transformed in the post WWII period, and the contributions of Sargent and Sims in the 1970s and 1980s deepened that transformation. In the earlier part of that transformation scientism and statism was aligned, with Lucas and Sargent that alignment was broken, but still the commitment to scientism deepened.
Hayek's The Counter-Revolution is much more than a critique of the social engineering mentality. It is a critique of scientism. We know that scientism kills scholarship, but it also kills science. As Cowen points out in his analysis of Sims, the contribution is much more methodological than substantive. Cowen might not agree with my interpretation, but that sums up the problem perfectly. The great sociologists Peter Berger has argued that a preoccupation with method in the sciences of man has the same impact on performance of the practitioner of the sciences of man as a preoccupation with method does in lovemaking.
What unified "mainstream" economists in the post WWII transformation of the discipline was a methodological commitment to a model and measure program (philosophically justified by some weird mix of formalism and positivism). Prior to WWII what united economists was a commitment to a set of proposition about how the economy operated, and getting at those propositions could be achieved through a variety of languages and methods.
Sargent and Sims made major contributions to the way economics is currently practiced. They helped kill methodological and analytical diversity in economic science. And that is the problem.