Wanted: A Theory of Inflation

The more I think about the current debate about inflation, the more I am inclined towards the following remarkable conclusion. We currently do not have a good framework to explain inflation, neither cyclically nor structurally. Perhaps more appropriately, the old consensus among economists and policymakers on what inflation is, how it arises, and what to do about it has been severely challenged, if not shattered entirely. In a post-pandemic world of a clear, and almost textbook, inflationary mismatch between demand and supply, this has created the odd situation in which everyone is talking about inflation, and more recently inflation expectations, concluding that it either doesn’t matter or that we don’t understand how inflation works in the first place. Nowhere is this clearer than in the debate about whether presently high inflation is transitory or not. The thrust of this discussion has as much to do with the main interlocutors convincing each other that high inflation doesn’t matter, as it is about agreeing on what, in fact, transitory means.

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