“Writing short stories is very hard work.” That, at any rate, is what George Saunders had to say on the subject some years ago, in an essay about the postmodern master Donald Barthelme, and lest anyone raise a skeptical eyebrow — since by then Saunders had already proved himself to be one of the most gifted, wickedly entertaining story writers around — he continued to wring his hands, revealingly, a few pages later: “The land of the short story,” he fretted, “is a brutal land, a land very similar, in its strictness, to the land of the joke.”