Are we now trapped in a debt spiral?

WASHINGTON — From Scotland, where Adam Smith pioneered systematic thinking about economics, comes an adjective, “carnaptious,” that fits people who are allergic to economic euphoria. It means cantankerous. Let’s think carnaptiously about this fact: The interest rate on 10-year Treasury bonds recently rose briefly to 3 percent, and soon may move above this. This is more than evidence of the economy’s strength. It also is a harbinger of a coming day when the great driver of the national debt will be … the national debt. Pour a Scotch and read on.