Hardly surprisingly, Greenspan’s call on inflation is now coming under the microscope, even by those on the Keynesian left who tend to favor expansionary macroeconomic policies. "Show me something, other than computers, where the price is falling," says Dean Baker of the Centre for Economic Policy Research in Washington. Baker is right. Clearly, risks to inflation are on the upside, and massively so. The economy has been injected with a cocktail of three growth-inducing drugs—negative real interest rates, a rising budget deficit and a falling currency. Oil prices have touched $40 a barrel and the labor market is tightening. It is hard to believe that Greenspan, a junkie for economic data no matter how seemingly trivial, has not spotted all this. Rates in the US are far below a neutral level, which would probably be around 5%, yet Greenspan is in no hurry to act.