On March 1, 2004, shortly after New York Magazine was sold to its current owners, Adam Moss became its editor-in-chief. This March 31, he stepped down, having held the job longer than anyone else. When he arrived, New York published 46 issues a year and had a website where a staff of five or six put up restaurant listings and our print journalism, plus a dollop of fashion-show coverage. He began with what he called a restoration project—reinvigorating New York with the ambition of its early years—but he was just warming up. Over 15 years, in a terrible business climate for media, he oversaw a wholesale reinvention, widening the magazine’s scope, focusing its lenses, and extracting from its heritage the playbook for it to become a 21st-century media entity. Today…