sentences:  In 2014, Jared Lander, a professional statistician and Adjunct Professor at Columbia University, conducted a study of pizza slice prices within New York City and concluded that the Pizza Principle still held true.Other New York City news organizations occasionally confirm the ability of the Pizza Principle to predict increases in the cost of a single-ride subway/bus fare in the city.In 2019, "The Wall Street Journal" noted that, due to a combination of a decrease in the fare bonus for a subway ride rather than an increase in the overall fare ($2.75 at the time) and the increased variability of the cost of pizza in New York City, the Pizza Principle was no longer accurate.