An analyst's critique of inflation 'doomers' and Austrian economists reveals disagreements over how to interpret monetary data and what it means for the next Fed move.
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A fresh exchange between two economic camps is exposing a fault line in how inflation is understood and, by extension, how Fed policy is read by markets.
Lance Roberts, writing on Seeking Alpha, defended Milton Friedman's famous line that "Inflation is always and everywhere a monetary phenomenon." He argued that the second half of the quote is often ignored. Inflation occurs only when money supply grows faster than output, Roberts said. "That part is where the real economics is," he wrote.
Per Bylund, an Austrian economist, challenged that view in a column for The Daily Economy. He said Roberts confuses the statistical measure of rising prices with the economic concept of monetary dilution. "The economics of money is quite clear," Bylund wrote. Comparing two identical economies except for money supply, the one with more money will have higher prices, all else equal.
Bylund criticized the reliance on statistical measures of inflation. "The measure of something is not that something itself, but merely a measure of it," he wrote. Economic concepts like inflation are well-defined but hard to measure directly. Statistical measures, even if accurate, cannot replace economic theory in analysis, Bylund argued.
Roberts pushed back on that line of thinking. "You can't run a $27 trillion economy on Austrian methodological purity," he wrote. Bylund granted that policymakers and investors need metrics. But he said the issue is not operational practicality. It is analytical clarity. Economic causality is well understood, Bylund argued, but quantifying outcomes requires ceteris paribus assumptions that are often violated. "The Fed has to make decisions, allocators have to deploy capital, and investors have to make portfolio choices," Roberts wrote.
The dispute has practical stakes. Roberts argued the key question for investors is not whether the Fed will tighten, but whether fiscal constraints leave room. Bylund countered that the theoretical understanding of inflation as a monetary phenomenon is independent of output changes.
Each CPI or PCE print is filtered through such lenses. Roberts put the choice starkly: "the relevant question for investors isn't whether the Fed will tighten policy. The relevant question is whether the fiscal setup will leave the Fed any room to tighten in the first place."
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