The two interludes just past strayed some distance from the writings of the Situationists, the little clique of avant-garde Marxists in mid-20th century France whose reflections offer certain highly useful insights into the problems and predicaments of life in the twilight of the industrial age. Neither of those divagations, however, was irrelevant to the theme I’ve been developing here. Both the no-ego ego trip and the collapse of genuine humor on the American left—shown most clearly, perhaps, ...