Rolling Stone screwed up. In most media scandals, it's unfair to paint with such a broad brush. When Stephen Glass concocted his fables at the New Republic, he went to antiheroic lengths to conceal his deceptions from his colleagues. Janet Cooke, who famously won a Pulitzer for her Washington Post series about an 8-year-old heroin addict, "Jimmy's World," lied to her editors. That's not the case with Rolling Stone's publication of "A Rape on Campus," the story of the brutal gang rape of a student named "Jackie" at the University of Virginia that turned out to be false. Its failure...