Thursday, February 9, 2012

Information asymmetry

Dinner With Joseph Stiglitz

The great thing about interviewing Joseph Stiglitz over dinner is that you don’t have to ask any questions. You just turn him on and he spits out one zinger after another. And he does this in a kibitzing, wizened, grandfatherly manner like one would expect from a character that just walked off the set of Fiddler on the Roof.
The unfortunate thing is that you also don’t get to eat. The Columbia University professor and former World Bank Chief Economist animatedly talked the entire time, and I was too busy feverishly taking notes to ingest a single crouton.
Stiglitz argued that for 30 years after the end of the Great Depression there was no financial crisis because a newly empowered SEC was on the beat, and everything worked. A deregulation trend that started under Reagan began stripping away those protections, with the eventual disastrous repeal of Glass-Steagle in 1999. The philosophical justification adopted by many economists, including Fed chairman Alan Greenspan, was that unfettered markets always lead to efficient outcomes.
This belief was based on simplistic models assuming that markets were always perfect, always open, and that everyone had perfect information. Stiglitz’s own work on ‘information asymmetry,’ which earned him a Nobel Prize in economics in 2001, pulled the rug out from under this theory, because it showed that one party to a transaction always has more information than the other, often the seller.

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