Beware the Hook: Inflation's Path Downward Won't Be Smooth

 | Nov 29, 2023 07:06

The bungee jumper doesn’t just bounce once.

Stated in a more high-falutin’ way, perturbed systems normally don’t converge straight back to equilibrium.

Obviously, the 2020-2021 COVID-triggered episode took the form of a severe shock to the system. The initial shock (to relitigate the familiar story for the thousandth time) was the panicky global shutdown initiated due to a fear of the unknown parameters of the virus. The counter-shock was the massive fiscal and monetary response to that shutdown.

Almost all of the inflation-related problems we have had since then can be traced back to the fact that the initial shock lasted 6-9 months while the counter-shock lasted multiple years. “Can you give me a little push, Daddy?” says the child on the swing. “Sure,” says Dad, who then launches Junior screaming into orbit with a mighty shove.

It doesn’t matter if Daddy stops pushing; it’ll take a while for Junior’s oscillations to get back to zero. (The therapy sessions will last for years.) And so it is with the economy. Positive momentum succumbs to gravity, which induces negative momentum, which succumbs to gravity again on the other side of the zero mark.

The Fed’s massive push shows up in the following chart (source: Bloomberg); highlighted in blue (left scale) is the sharp rise in M2 from 2020-2022. This surge – which indirectly financed the direct Federal stimulus payments – was meant to offset the various contractionary forces caused by forced idleness among the ‘non-essential’ workforce, such as the 140bln contraction in revolving consumer credit (in black, right scale).