What’s more, Hudson notes, over time, the combined effect of low interest payments and the inflation is that these bonds actually depreciate in value—adding to the tax effect, or, as I preferred to put it in the first chapter, “tribute.” Economists prefer to call it “seigniorage.” The effect, though, is that American imperial power is based on a debt that will never—can never—be repaid. Its national debt has become a promise, not just to its own people, but to the nations of the entire world, that everyone knows will not be kept.