Why the choice of inflation measure matters
Core inflation offers a narrower reading of price pressure, and October’s figures show how much that choice can matter: headline CPI rose 3.7% on October 14, including food and energy, while core CPI increased 2.6%. That gap is more than a technical distinction. It reflects two different questions: how broadly prices are rising across the measured basket, and how fast prices are changing after food and energy are removed.
The author’s challenge to commentators is pointed: if they set aside food and energy when discussing inflation, they should consider what that exclusion means for households that still pay those bills. Core inflation can help reveal whether price increases are spreading beyond volatile categories, but the exclusions don’t make those expenses disappear from budgets. The numbers here are underwhelming as a complete account of household pressure: a narrower measure can describe part of the problem while leaving out costs that people encounter every week.
What the core measure leaves out
The piece uses a deliberately literal test. Until the November 10 CPI release, anyone relying on core inflation should avoid headline items excluded from the measure; food, beverages, travel, heating and electricity are among the costs the author names. The point is satirical, but it exposes a real distinction in how the statistic is built: an excluded category may be set aside to clarify a trend, yet it remains part of the lived cost of consumption.
The same comparison appears in producer prices: the recent headline PPI reading was 6.3%, against 5% for core PPI. Producer prices track price changes earlier in the supply chain than consumer prices do, so the two measures answer related but different questions. Their gap reinforces the article’s central point: a headline figure records the full set of included categories, while a core figure filters out selected components to make other movements easier to see. Neither reading, by itself, tells the whole story.
Core measures still cover a broad range of purchases. Consumers can buy new or used cars, trucks, tires and replacement parts, along with clothing, jewelry, shoes and watches. The list also includes computers, phones, televisions, software, medical goods, prescriptions, household furnishings, appliances, books, toys and pet products. That breadth matters: “core” doesn’t mean a tiny or irrelevant slice of the economy. It means a broad basket with specific exclusions, and the interpretation depends on keeping those boundaries in view.
Gas and diesel are excluded, as are food and many energy costs. The piece wryly points to the practical tension: transporting a mattress home by bicycle may be possible, but using energy to complete the transaction is harder to avoid. (And this is the part most people overlook.) Even purchases that sit inside the core basket can depend on excluded inputs somewhere along the way. The index classifies prices; it doesn’t map every household’s full chain of expenses.
Tap water, tobacco and alcohol remain within the core basket, the author notes. The contrast underscores the argument: a statistic can be useful for isolating underlying price trends while still diverging from the expenses that shape a household’s immediate experience. That’s not a reason to dismiss core inflation. It’s a reason to ask what the measure includes before treating it as a stand-in for the cost of living.
A dispute over how inflation is measured
The author links the current debate to a history of changes in inflation measurement, listing episodes from the 1944–45 Mitchell Committee and the 1961 Stigler Committee to the 1995–96 Boskin Commission. The list also includes the introduction of core inflation in 1972–75, owners’ equivalent rent in 1983, the Federal Reserve’s shift to PCE in 2000 and core PCE in 2004, chained CPI in 2017, annualizing practices from 2020 to 2026, and the suspension of CPI in 2025.
That chronology frames inflation statistics as constructed measures, shaped by choices about which prices to track and how to combine them. Those choices can improve consistency or help analysts focus on a particular kind of price movement. They can also make comparisons harder when methods change, especially if readers aren’t told clearly what has shifted. The list alone doesn’t establish why each change occurred or how much it affected reported inflation; it does, however, support the author’s call to treat measurement choices as part of the debate.
From that history, the author argues that measurement changes have tended to lower reported inflation and calls an exclusive focus on core figures misleading. That is an editorial judgment; the immediate data point is simpler: October’s 3.7% headline rate was a full 1.1 percentage points above core. The November CPI release will provide the next comparison, while a separate November 13 date marks when, in the author’s satirical challenge, consumers may resume buying food and using energy. The joke lands because the underlying distinction is consequential: an analytical exclusion is not a practical exemption from paying.
What the October gap means for readers
For market readers, the practical takeaway is to keep the measure aligned with the question. Core CPI can help isolate price movements outside food and energy, but headline CPI captures those costs too—and the October gap shows why both readings matter. If you’re working in this space, the useful habit is to state which measure you’re citing and what it leaves out before drawing a conclusion from the rate.
Here's the thing: one month’s gap doesn’t settle the argument over which measure deserves the most attention. It does show that the choice changes the account of price pressure by a meaningful amount in October. A reader focused on broad underlying trends may find core useful; a reader trying to understand the full set of prices represented in headline CPI needs the headline figure as well. The next comparison will add another data point, but it won’t erase the difference in what each measure is designed to capture.
Both readings, with their limits.
