MIDDLE-AGED PEOPLE WEARING HALLOWEEN COSTUMES or attending Burning Man are expressions of a phenomenon I described earlier—the commitment of Americans, beginning with the baby boom generation, to a fantasy of remaining forever young. The treacly term kids of all ages had popped up when baby boomers were kids. But its currency skyrocketed during the 1980s and ’90s, when American adults, like no adults before them—but like all who followed—began playing videogames and fantasy sports, dressing like kids, grooming themselves and even getting surgery to look more like kids. It’s what I call the
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