Krugman writes, “we’re not using the knowledge we have, because too many people who matter—politicians, public officials, and the broader class of writers and talkers who define the conventional wisdom—have, for a variety of reasons, chosen to forget the lessons of history and the conclusions of several generations’ worth of economic analysis, replacing that hard-won knowledge with ideologically and politically convenient prejudices.”

Stiglitz insists that the huge and growing divide between the richest 1 percent and “the 99 percent” is not just one concern among many, but the defining characteristic of a thoroughly sick economy. We may be the richest nation in the world, but poverty is higher and social mobility between generations lower than in other rich nations. In other respects, our model is bloated: we release far more carbon dioxide and use far more water on a per capita basis; and we spend far more on health care, while leaving tens of millions uninsured and achieving health outcomes that are mediocre at best.

And the reason for that, he argues, is that our economy is being overwhelmed by politically engineered market advantages—special deals that Stiglitz labels with a term familiar to economists: “rent-seeking.” By this, he means economic returns above normal market levels that are derived from favorable political treatment.

The spectacular profits of the energy industry, for example, rely heavily on the failure of regulation to incorporate fully the social and economic costs associated with environmental degradation, including climate change. Similarly, the increasingly aggressive activities of Wall Street—whether in the marketing of unsound mortgages, the use of excessive leverage, or the irresponsible use of derivatives—create huge risks for the economy as a whole. Yet these risks are largely not taken into account in the prices paid in financial markets. Without effective regulation, the costs are borne by all of us—most acutely by the struggling millions who have been pushed out of jobs.

This is the central message of Krugman and Stiglitz: we have a choice. Politics got us into our economic mess, and only a revitalized politics can get us out of it.

Since most of the co-op’s members were lawyers, it was difficult to convince them the problem was monetary. They tried to legislate recovery—passing a rule requiring each couple to go out at least twice a month. But eventually the economists prevailed. More coupons were issued, couples became more willing to go out, opportunities to baby-sit multiplied, and everyone was happy. Eventually, of course, the co-op issued too much scrip, leading to different problems …