Most analysis of the current financial crisis blames the use of “faulty models” in pricing derivatives, and this analysis is probably correct. Coval et al. [CJS09] give a readable account of this “modelling error”, and point out that buyer practices (and in particular the algorithms used by rating agencies [WA05]) do not involve bounding the lemon cost or doing any kind of sensitivity analysis of the derivative other than running Monte-Carlo simulations on a few industry-standard distributions such as the Gaussian copula.posted by pwnguin at 1:02 PM on October 19, 2009
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Frank Rich has it right, as ususal:
http://www.nytimes.com/2009/10/18/opinion/18rich.html?_r=1&ref=opinion
posted by Postroad at 2:40 PM on October 18, 2009 [1 favorite]