And because this phenomenon wears itself so clearly as the convergence of downtown cool and easy, abundant money, it is also, of course, about stuff—though that’s not all it’s about. It’s more interesting as evidence of the slow erosion of the long-held idea that in some fundamental way, you cross through a portal when you become an adult, a portal inscribed with the biblical imperative “When I was a child, I spake as a child, I understood as a child, I thought as a child: But when I became a man, I put away childish things.” This cohort is not interested in putting away childish things. They are a generation or two of affluent, urban adults who are now happily sailing through their thirties and forties, and even fifties, clad in beat-up sneakers and cashmere hoodies, content that they can enjoy all the good parts of being a grown-up (a real paycheck, a family, the warm touch of cashmere) with none of the bad parts (Dockers, management seminars, indentured servitude at the local Gymboree). It’s about a brave new world whose citizens are radically rethinking what it means to be a grown-up and whether being a grown-up still requires, you know, actually growing up.