In 1939, the New Yorker published a short story titled The Secret Life of Walter Mitty. Written by James Thurber, the partially autobiographical story and the expanded novel that followed three years later introduced readers to a meek and unassuming man with a wild fantasy life.
If you’re unfamiliar with the story (film versions have starred Danny Kaye and Ben Stiller), you’ll find no spoilers here. But it’s enough to say that Walter has what might be best described as an incidental relationship with reality.
During rare lucid moments when reality does intrude on Walter’s overpowering fantasy life (he believes himself to be, among other things, a wartime pilot, an emergency-room surgeon, and a louche killer), he is confronted by a world he doesn...