Tue, May 03, 2011 - Page 9 News List

Distractions and confusions create economics crisis

By J. Bradford DeLong

The most interesting moment at a recent conference held in Bretton Woods, New Hampshire — site of the 1945 conference that created today’s global economic architecture — came when Financial Times columnist Martin Wolf quizzed former US secretary of treasury Larry Summers, US President Barack Obama’s former assistant for economic policy.

“[Doesn’t] what has happened in the past few years simply suggest that [academic] economists did not understand what was going on?” Wolf asked,

Here is the most interesting part of Summers’ long answer: “There is a lot in [Walter] Bagehot that is about the crisis we just went through. There is more in [Hyman] Minsky and perhaps more still in [Charles] Kindleberger.”

That may sound obscure to a non-economist, but it was a devastating indictment.

Bagehot (1826-1877) was a mid-19th-century editor of The Economist who published a book about financial markets, Lombard Street, in 1873. Summers is certainly right: There is an awful lot in Lombard Street that is about the crisis from which we are now recovering.

Minsky (1919-1996) is best approached not through his collected essays, entitled Can “It” Happen Again?, but rather through the use Kindleberger (1910-2003) made of his work in his 1978 book Manias, Panics, and Crashes: A History of Financial Crises.

Asked to name where to turn to understand what was going on in 2008, Summers cited three dead men, a book written 33 years ago and another written the century before last.

Summers then enlarged his answer to include living economists: “[Barry] Eichengreen, [George] Akerlof, [Robert] Shiller, many, many others.”

He talked about “the revolution in finance as it was realized that asset prices show large volatility that does not reflect anything about fundamentals,” but added that “macroeconomics [did not] keep up with [this] revolution.”

As a result, “to the great detriment of contemporary macroeconomics,” his fellow economists did not understand asset prices, manias, panics and liquidity, he said.

For Summers, the problem is that there is so much that is “distracting, confusing and problem-denying in ... the first year course in most PhD programs.” As a result, even though “economics knows a fair amount,” it “has forgotten a fair amount that is relevant and it has been distracted by an enormous amount.”

I think that Summers’ judgments are fair and correct. I count myself among those who had forgotten and been distracted, even though I have always assigned Lombard Street to my economic history courses and Manias, Panics, and Crashes to my macroeconomics classes, and have always paid close and respectful attention to Eichengreen, Akerlof and Shiller.

However, I was shocked by how large a panic was produced by what seemed to me — and still does — relatively small losses (in terms of the size of the global economy) in subprime mortgages; by the weakness of risk controls at the major highly leveraged banks; by how deep the decline in demand was; by how ineffective the market’s equilibrium-restoring forces have been at rebalancing labor-market supply and demand; and by how much core-country governments have been able to borrow to support demand without triggering any run-up in interest rates.

It is the scale of the catastrophe that astonishes me, but what astonishes me even more is the apparent failure of academic economics to take steps to prepare itself for the future.

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