Japan must choose one of two bad options. Keep rates at zero to manage its massive debt but watch the yen collapse from inflation. Or, raise rates to save the yen but risk bankrupting the country with high interest payments on its 200%+ debt-to-GDP. There is no viable middle ground.

A government funding unsustainable promises has only three choices, all of which terminate in dead ends. It can tax harder, causing capital flight; borrow more, leading to a debt crisis; or print money, destroying the currency's value. Each path inevitably leads to economic ruin.

To escape a debt crisis without total collapse, a nation must delicately balance four levers: austerity (spending less), debt restructuring, controlled money printing, and wealth redistribution. According to investor Ray Dalio, most countries fail to find this balance, resulting in an "ugly deleveraging" and societal chaos.

Faced with massive debt, governments have five options: austerity, default, high growth, hyperinflation, or financial repression. Napier argues repression—keeping inflation above interest rates to erode debt—is the most politically acceptable path, just as it was post-WWII.

Governments with massive debt cannot afford to keep interest rates high, as refinancing becomes prohibitively expensive. This forces central banks to lower rates and print money, even when it fuels asset bubbles. The only exits are an unprecedented productivity boom (like from AI) or a devastating economic collapse.

The U.S. faces a massive debt problem with only two politically tenable exits: massive economic growth fueled by AI, or devaluing the debt through inflation. With the AI boom proving slower than hoped, the government is being forced down the path of inflation, using covert methods to avoid public backlash against austerity or default.

In a world of high debt and low organic growth (from demographics and productivity), the only viable path for governments is to ensure nominal GDP grows. This will likely be achieved through inflationary policies, making official low-inflation forecasts unreliable over the long term.

The central strategy in macroeconomics is to stifle volatility in foundational markets like bonds and foreign exchange. This engineered stability allows nominal GDP to outpace debt, effectively devaluing it over time. This delicate balance is most vulnerable to unpredictable geopolitical shocks that can shatter the low-volatility regime.

Tyler Cowen predicts the US will eventually resort to several years of ~7% inflation to manage its national debt. This strategy, while damaging to living standards, is politically more palatable than raising taxes or cutting spending. Rapid, AI-driven productivity growth is the only plausible alternative to this outcome.