"Sometimes—not very often—a particularly cogent argument against reigning political common sense presents such a shock to the system that it becomes necessary to create an entire body of theory to refute it. Such interventions are themselves events, in the philosophical sense; that is, they reveal aspects of reality that had been largely invisible but, once revealed, seem so entirely obvious that they can never be unseen. Much of the work of the intellectual Right is identifying, and heading off, such challenges."