THERE is a story about a science professor giving a public lecture on the solar system. An elderly lady interrupts to claim that, contrary to his assertions about gravity, the world travels through the universe on the back of a giant turtle. “But what supports the turtle?” retorts the professor. “You can’t trick me,” says the woman. “It’s turtles all the way down.” [...]
[...] In the end, the turtle at the bottom of the pile is the American taxpayer. But that suggests that, if Americans are losing money on their houses, pensions or bank accounts, the right answer is to tax them to pay for it. Perhaps it is no surprise that traders in the credit-default swaps market have recently made bets on the unthinkable: that America may default on its debt.