How Does the Economy Work? A New Fed Paper Suggests Nobody Really Knows

For example, when inflation has been low in the recent past, workers might not demand raises as they would in a world where inflation was high; after all, their existing paychecks go pretty much as far as they used to. You don’t need some theory involving inflation expectations to get there.

Some economists who are sympathetic to the idea that central bankers have overly fetishized precise measurements of inflation expectations aren’t ready to fully dismiss the idea.

For example, Mr. Posen, a former Bank of England policymaker, says there remains a simple and hard-to-dispute idea about inflation expectations supported by lots of history: that if people distrust a country’s monetary system, inflation shocks can spiral upward. Economic policy credibility matters. But that isn’t the same as assuming that some survey or bond market measure of what will happen to inflation in the distant future is particularly meaningful for forecasting the near future.

“It has been a noble lie that has become a critical part of the catechism of global monetary policy, that long-term inflation expectations are not just interesting but are a decisive determinant of real-time inflation,” said Paul McCulley, a former Pimco chief economist, commenting on Mr. Rudd’s paper.

This isn’t the only way in which basic precepts underlying economic policy are shifting beneath economists’ feet.

Particularly prominently, for years central bankers believed there was a tight relationship between the unemployment rate and inflation, known as the Phillips Curve. Over the course of the 2000s, though, that relationship appeared to weaken and become a less reliable guideline for how to set policy.

Similarly, interest rates and inflation fell worldwide, for reasons that scholars are still trying to understand fully. That implied a lower “neutral interest rate,” or the rate that neither stimulates nor slows the economy, than was widely believed to be the case as recently as the mid-2010s.

Article source: https://www.nytimes.com/2021/10/01/upshot/inflation-economy-analysis.html