Is there a risk that we’ll have inflation after the economy recovers? That’s the claim of those who look at projections that federal debt may rise to more than 100 percent of G.D.P. and say that America will eventually have to inflate away that debt  that is, drive up prices so that the real value of the debt is reduced.

Such things have happened in the past. For example, France ultimately inflated away much of the debt it incurred while fighting World War I.

But more modern examples are lacking. Over the past two decades, Belgium, Canada and, of course, Japan have all gone through episodes when debt exceeded 100 percent of G.D.P. And the United States itself emerged from World War II with debt exceeding 120 percent of G.D.P. In none of these cases did governments resort to inflation to resolve their problems.

So is there any reason to think that inflation is coming? Some economists have argued for moderate inflation as a deliberate policy, as a way to encourage lending and reduce private debt burdens. I’m sympathetic to these arguments and made a similar case for Japan in the 1990s. But the case for inflation never made headway with Japanese policy makers then, and there’s no sign it’s getting traction with U.S. policy makers now.

All of this raises the question: If inflation isn’t a real risk, why all the claims that it is?

Well, as you may have noticed, economists sometimes disagree. And big disagreements are especially likely in weird times like the present, when many of the normal rules no longer apply.

But it’s hard to escape the sense that the current inflation fear-mongering is partly political, coming largely from economists who had no problem with deficits caused by tax cuts but suddenly became fiscal scolds when the government started spending money to rescue the economy. And their goal seems to be to bully the Obama administration into abandoning those rescue efforts.

Needless to say, the president should not let himself be bullied. The economy is still in deep trouble and needs continuing help.

Yes, we have a long-run budget problem, and we need to start laying the groundwork for a long-run solution. But when it comes to inflation, the only thing we have to fear is inflation fear itself.