Howard Davies: "Economics in Denial":
In an exasperated outburst, just before he left the presidency of the European Central Bank, Jean-Claude Trichet complained that, “as a policymaker during the crisis, I found the available [economic and financial] models of limited help. In fact, I would go further: in the face of the crisis, we felt abandoned by conventional tools.” Trichet went on to appeal for inspiration from other disciplines – physics, engineering, psychology, and biology – to help explain the phenomena he had experienced. It was a remarkable cry for help, and a serious indictment of the economics profession, not to mention all those extravagantly rewarded finance professors in business schools from Harvard to Hyderabad….
[T]here should be more teaching of economic history…. [T]he study of economics should be set in a broader political context, with greater emphasis on the role of institutions. Students should also be taught some humility…. But it is not clear that a majority of the profession yet accepts even these modest proposals. The so-called “Chicago School” has mounted a robust defense of its rational expectations-based approach, rejecting the notion that a rethink is required. The Nobel laureate economist Robert Lucas has argued that the crisis was not predicted because economic theory predicts that such events cannot be predicted. So all is well.
And there is disturbing evidence that news of the crisis has not yet reached some economics departments. Stephen King, Group Chief Economist of HSBC, notes that when he asks recent university graduates (and HSBC recruits a large number of them) how much time they spent in lectures and seminars on the financial crisis, “most admitted that the subject had not even been raised.” Indeed, according to King, “Young economists arrive in the financial world with little or no knowledge of how the financial system operates.”…
[T]he University of Chicago’s Eugene Fama has described the notion that finance theory was at fault as “a fantasy,” and argues that “financial markets and financial institutions were casualties rather than causes of the recession.” And the efficient-market hypothesis that he championed cannot be blamed, because “most investing is done by active managers who don’t believe that markets are efficient.” This amounts to what we might call an “irrelevance” defense: Finance theorists cannot be held responsible, since no one in the real world pays attention to them!
Fortunately, others in the profession do aspire to relevance, and they have been chastened by the events of the last five years, when price movements that the models predicted should occur once in a million years were observed several times a week…
