The depression we’re in is essentially gratuitous: we don’t need to be suffering so much pain and destroying so many lives. We could end it both more easily and more quickly than anyone imagines—anyone, that is, except those who have actually studied the economics of depressed economies and the historical evidence on how policies work in such economies.

The truth is that recovery would be almost ridiculously easy to achieve: all we need is to reverse the austerity policies of the past couple of years and temporarily boost spending. Never mind all the talk of how we have a long-run problem that can’t have a short-run solution—this may sound sophisticated, but it isn’t. With a boost in spending, we could be back to more or less full employment faster than anyone imagines.

But don’t we have to worry about long-run budget deficits? Keynes wrote that “the boom, not the slump, is the time for austerity.” Now, as I argue in my forthcoming book*—and show later in the data discussed in this article—is the time for the government to spend more until the private sector is ready to carry the economy forward again. At that point, the US would be in a far better position to deal with deficits, entitlements, and the costs of financing them.

Meanwhile, the strong measures that would all go a long way toward lifting us out of this depression should include, among other policies, increased federal aid to state and local governments, which would restore the jobs of many public employees; a more aggressive approach by the Federal Reserve to quantitative easing (that is, purchasing bonds in an attempt to reduce long-term interest rates); and less timid efforts by the Obama administration to reduce homeowner debt.

But some readers will wonder, isn’t a recovery program along the lines I’ve described just out of the question as a political matter? And isn’t advocating such a program a waste of time? My answers to these two questions are: not necessarily, and definitely not. The chances of a real turn in policy, away from the austerity mania of the last few years and toward a renewed focus on job creation, are much better than conventional wisdom would have you believe. And recent experience also teaches us a crucial political lesson: it’s much better to stand up for what you believe, to make the case for what really should be done, than to try to seem moderate and reasonable by essentially accepting your opponents’ arguments. Compromise, if you must, on the policy—but never on the truth.

Let me start by talking about the possibility of a decisive change in policy direction.

Nothing Succeeds Like Success

Pundits are always making confident statements about…