Wildcat groups such as hedge funds have played a growing role in causing or aggravating blowups in the capital markets as well as the banking system. One crackup was the crisis of 2008, which ended up crippling the financial system and the real economy. The bombshell obliterated trillions of dollars from each of the major stock markets of the world, destroyed millions of jobs in sizable countries, and nixed trillions of dollars by way of lost output...