Marshall McLuhan, the celebrated social theorist who defined the culture of the 1960s, is remembered now primarily for the aphoristic slogan he coined to explain the emerging new world of global communication: “The medium is the message.” Half a century later, McLuhan’s predictions about the end of print culture and the rise of “electronic inter-dependence” have become a reality—in a sense, the reality—of our time.

Douglas Coupland, whose iconic novel Generation X was a “McLuhanesque” account of our culture in fictional form, has written a compact biography of the cultural critic that interprets the life and work of his subject from inside. A fellow Canadian, a master of creative sociology, a writer who supplied a defining term, Coupland is the ideal chronicler of the uncanny prophet whose vision of the global village—now known as the Internet—has come to pass in the 21st century.