The New York City subway system is a marvel. We regular riders all gripe about the ever-increasing prices, the bums, the rats, the piss-infested platforms, the delays and the unintelligible conductor announcements, but none of us could do without it. For $2.50 (that is, until it goes up again), you can travel from Coney Island in Brooklyn to Gun Hill Road in the Bronx, and all kinds of places in between, sharing a transient but important bond with New Yorkers from all walks of life.