Unlike prior tech revolutions funded mainly by equity, the AI infrastructure build-out is increasingly reliant on debt. This blurs the line between speculative growth capital (equity) and financing for predictable cash flows (debt), magnifying potential losses and increasing systemic failure risk if the AI boom falters.

The current AI boom isn't just another tech bubble; it's a "bubble with bigger variance." The potential for massive upswings is matched by the risk of equally significant downswings. Investors and founders must have an unusually high tolerance for risk and volatility to succeed.

A condition called "fiscal dominance," where massive government debt exists, prevents the central bank from raising interest rates to cool speculation. This forces a flood of cheap money into the market, which seeks high returns in narrative-driven assets like AI because safer options can't keep pace with inflation.

Don't dismiss megatrends like demographics and technology as only long-term concerns. Research from Vanguard's Joe Davis shows these forces account for roughly 60% of quarter-to-quarter changes in per capita GDP growth and earnings yield, making them immediate drivers of the business cycle.

Unlike the 2008 crisis, which was concentrated in housing and banking, today's risk is an 'everything bubble.' A decade of cheap money has simultaneously inflated stocks, real estate, crypto, and even collectibles, meaning a collapse would be far broader and more contagious.

Joe Davis argues the economy faces a "tug of war" between an AI-driven boom and a deficit-fueled slump. He believes the mainstream forecast of stable 2% growth and 2% inflation is the least likely outcome, with an over 80% chance of a material change in the economic environment.

Unlike in 1971 when the U.S. unilaterally left the gold standard, today's rally is driven by foreign central banks losing confidence in the U.S. dollar. They are actively divesting from dollars into gold, indicating a systemic shift in the global monetary order, not just a U.S. policy change.

Contrary to popular belief, Vanguard's chief economist suggests that in a high-debt, low-growth future, overweighting fixed income is superior to holding gold. This assumes the Fed will maintain high real interest rates to fight inflation, making bond yields more attractive than equities, which would face a lost decade.

Alan Greenspan viewed a rising gold price as a market signal that monetary policy was too loose and interest rates were too low. Today's soaring gold price, viewed through this lens, suggests the Federal Reserve is making a significant policy error by considering rate cuts.