What's odd about the subprime crash is Goldman Sachs Group Inc. A single firm took a position contrary to the rest of Wall Street. Giant Wall Street firms are designed for many things, but not, typically, to express highly idiosyncratic views in the market.

Even more surprising is how little Wall Street seems to have dwelled on how and why Goldman Sachs made its killing. There are insane conspiracy theories -- for instance, that former Goldman chief executive officer and current U.S. Treasury Secretary Henry Paulson tipped his old pals, etc. (But then, how did HE know?)