PIZZA AND THE SUBWAY are among the top five things we celebrate and denigrate in New York. When they are good, they are very, very good, and when they are bad, better whine about it on Twitter. The Pizza Principle -- an ironclad law of physics, sort of -- marries these alternately loved and loathed city staples.
Writing in the Times in 1980, a local posited that New Yorkers for decades had been spending the same amount of dough on a typical slice (aka regular; aka cheese) as they had been on a single subway ride. “The transit token has no relationship to capital costs, union contracts, passenger miles, or depreciation schedules,” a follow-up reads. “Forget all that. The critical variables are flour, tomato sauce and mozzarella cheese.''
For years, the Pizza Principle bounced around on slow news days. Then in 2014, another local published his own independent, labyrinthine analysis of the theory. He found that it still mostly held true with one exception, the immortal unicorn of New York City living: the dollar slice.