Alan Greenspan is being remembered for his 1990s economic growth. The US had a long stretch of good times. It was partly because he understood how technology helped the economy grow without causing inflation. This meant the Fed didn’t need to raise interest rates, keeping the economy strong. However, this approach may not work in today’s economy, where new challenges exist.
Source: https://www.barrons.com/articles/kevin-warsh-alan-greenspan-deficit-problem-3bc3c267