"...Since last summer, when the housing bust became unmistakable, interest rates on long-term bonds have fallen sharply. They’re now yielding much less than short-term bonds. The fact that investors are willing to buy those long-term bonds anyway tells us that these investors expect interest rates to fall. And that will happen only if the economy weakens, forcing the Federal Reserve to cut rates. So bond buyers are, in effect, betting on a future economic slowdown. "...How serious a slump is the bond market predicting? Pretty serious. Right now, statistical models based on the historical correlation between interest rates and recessions...