The world has gone from the greatest synchronized global economic boom in history to the first synchronized global bust since the Great Depression. How we got here is not a cautionary tale of free markets gone wild. Rather, it's the story of what can happen when governments ignore market signals and central bankers believe in endless booms.

Following the March 2000 Nasdaq bust, the Federal Reserve began to slash the fed-funds rate from 6.5% in January 2001 to 1.75% by year-end and then to 1% in 2003. (This despite the fact...