Has US growth relied on financial bubbles rather than sustainable demand?
Core argument: Larry Summers notes that U.S. growth has averaged less than 2% since the financial crisis, falling short of potential and failing to close the output gap the crisis created.
Since the financial crisis, U.S. economic growth has averaged less than 2%, falling short of potential and failing to fill the output gap created by the crisis. Pre-crisis growth from 2003-2007 was driven by financial bubbles and loose monetary policies, yet only achieved adequate levels. This suggests a chronic deficiency in investment relative to savings, a hallmark of secular stagnation. Increased savings due to wealth inequality, uncertainty, and lower expected returns, alongside reduced capital costs and changing business capital requirements, have led to excess savings and reduced investment. This imbalance complicates achieving sustainable growth without financial instability. The challenge is balancing growth with stability, as low interest rates inflate asset prices and create uncertainty, highlighting the need for a balanced fiscal-monetary approach to stimulate demand without relying solely on extraordinary monetary measures.


