Geoffrey Galt Harpham's book takes its title from a telling anecdote. A few years ago Harpham met a Cuban immigrant on a college campus, who told of arriving, penniless and undocumented, in the 1960s and eventually earning a GED and making his way to a community college. In a literature course one day, the professor asked him, "Mr. Ramirez, what do you think?" The question, said Ramirez, changed his life because "it was the first time anyone...