If Wall Street Is So Smart, Why Hasn't It Fixed the U.S. Mortgage Market?
Here's something you'll rarely see cited as a problem: The U.S. has too little financial innovation. The creativity of bankers and traders is one thing that enables them to make so much money. They think up fancy solutions to financial problems. Sometimes these involve complicated new securities designed by a couple of math Ph.Ds and may be well-understood by only a handful of people.

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