Federal Reserve Economists Acknowledge 60-Year Correlation Between Subway Ride and Cheese Slice Has Collapsed Beyond Repair, Replace It With Halal Cart Index
NEW YORK — The Federal Reserve Bank of New York issued a quiet, technical paper Tuesday formally retiring what economists have for six decades referred to as the “Pizza Principle” — the empirical observation that the price of a slice of New York pizza tracks almost exactly with the price of a single subway ride.
The decision follows the MTA’s January 4 fare hike, which lifted the base subway and bus fare from $2.90 to an even $3.00, while a basic cheese slice in most boroughs has now reached $4.50 and trending firmly upward, leaving the two figures further apart than at any point since the Lyndon Johnson administration.
The Halal Cart Index Will Replace It
In its place, Fed economists will track the “Halal Cart Index,” defined as the price of a chicken-and-rice platter at any halal cart on a Manhattan corner. The Index, which currently hovers around $11 with a side of white sauce extra, has shown stronger correlation with both transit costs and broader urban inflation since approximately 2018.
“The pizza-fare relationship served the city well,” said the wholly invented Dr. Marisol Bondurant-Vega of the New York Inflation Studies Group. “It was elegant. It was democratic. It survived three recessions and two pandemic-related sourdough revivals. It could not, however, survive the simultaneous arrival of $3.00 fares and the price of mozzarella in 2026.”
A Generation of New Yorkers Mourns
The Pizza Principle was first identified in 1980 by attorney Eric Bram, who noticed that subway-token prices had moved in tandem with slice prices since the early 1960s. The relationship survived the introduction of the MetroCard, the OMNY tap-to-pay rollout, and even the post-pandemic transit collapse. It did not survive 2026.
Gothamist reporting earlier this year noted that even before the official retirement, the pizza-fare relationship had been on life support, with slice prices moving sharply ahead of fares throughout 2024 and 2025. The OMNY transition has further complicated the calculation, since most riders no longer carry MetroCards or, increasingly, change for a slice.
The MTA has separately announced that the spare coins New Yorkers may still be carrying are no longer good in the system, having fully transitioned to OMNY tap-to-pay. The transition has not been smooth: Gothamist noted earlier this year that OMNY readers continue to malfunction with the consistency of an old-economy printer that has been asked to do something genuinely new.
Citi Bike, separately, has raised its prices for the fifth consecutive year, citing “unexpected tariffs.” The wholly invented New York Microeconomic Confederation has urged the Fed to consider a Citi-Bike-Per-Slice ratio as a backup metric.
The retirement was greeted by Bohiney Magazine with a quiet observation that all civic indices eventually fail their fundamentalists, while The London Prat noted that the British equivalent — the Pint Principle — collapsed in 2019, when the price of a London pint exceeded the per-mile cost of an Uber.
One bystander, asked at a 33rd Street pizzeria whether the Pizza Principle’s retirement felt like the end of an era, paused, looked at his slice, and said: “The slice is what it is. The fare is what it is. They had a good run.” He then declined to give his name and got on the subway.
For more on indices that have given up, see The Daily Mash.
SOURCE: https://bohiney.com/markets-rally-on-hope/
Originally posted 2026-04-27 00:16:34.