Behind the Fed's promise about short-term rates, by Mark Thoma: Can promises about the future have an effect today? That's the theory behind the Federal Reserve's statement following Wednesday's monetary policy meeting.
The Fed said it "currently anticipates that, even after employment and inflation are near mandate-consistent levels, economic conditions may, for some time, warrant keeping the target federal funds rate below levels the Committee views as normal in the longer run."
How is this supposed to work? How can a promise about the future course of interest rates have a stimulative effect on the economy today? ...