Meanwhile, about that oft-prophesied, never-arriving debt crisis: In Senate testimony more than two and half years ago, Mr. Bowles warned that we were likely to face a fiscal crisis within around two years, and he urged his listeners to “just stop for a minute and think about what happens” if “our bankers in Asia” stop buying our debt. But has he, or anyone in his camp, actually tried to think through what would happen? No, not really. They just assume that it would cause soaring interest rates and economic collapse, when both theory and evidence suggest otherwise.

Don’t believe me? Look at Japan, a country that, like America, has its own currency and borrows in that currency, and has much higher debt relative to G.D.P. than we do. Since taking office, Prime Minister Shinzo Abe has, in effect, engineered exactly the kind of loss of confidence the debt worriers fear — that is, he has persuaded investors that deflation is over and inflation lies ahead, which reduces the attractiveness of Japanese bonds. And the effects on the Japanese economy have been entirely positive! Interest rates are still low, because people expect the Bank of Japan (the equivalent of our Federal Reserve) to keep them low; the yen has fallen, which is a good thing, because it make Japanese exports more competitive. And Japanese economic growth has actually accelerated.

Why, then, should we fear a debt apocalypse here? Surely, you may think, someone in the debt-apocalypse community has offered a clear explanation. But nobody has.

So the next time you see some serious-looking man in a suit declaring that we’re teetering on the precipice of fiscal doom, don’t be afraid. He and his friends have been wrong about everything so far, and they literally have no idea what they’re talking about.