[T]he next time you hear serious-sounding people explaining the need for fiscal austerity, try to parse their argument. Almost surely, you'll discover that what sounds like hardheaded realism actually rests on a foundation of fantasy, on the belief that invisible vigilantes will punish us if we're bad and the confidence fairy will reward us if we're good. And real-world policy - policy that will blight the lives of millions of working families - is being built on that foundation.

Our popular economics writers, however, are not in the business of giving their readers a ringside seat on the research action; with no exception I can think of, they use their books to do an end run around the normal structure of scholarship, to preach ideas that few serious economists share. Often, these ideas are not just at odds with the professional consensus; they are demonstrably wrong, and sometimes terminally silly. But they sound good to the unwary reader.

It's a funny thing, by the way, how people who love free markets are also quite sure that they know that investors are being irrational.

Something terrible has happened to the soul of the Republican Party. We've gone from bad economic doctrine. We've even gone beyond selfishness and special interests. At this point we're talking about a state of mind that takes positive glee in inflicting further suffering upon the already miserable.

In fact, I'd say that the sources of the economy's expansion from 2003 to 2007 were, in order, the housing bubble, the war, and - very much in third place - tax cuts.

I have friends, political scientists, sociologists, who all share an interest at least in certain kinds of science fiction.

But Wall Street people are in fact very smart; they're funny, they're not company men who work their way up the chain.