Shields, of course, has written an entire testament, the manifesto-like book called “Reality Hunger,” in defense of the chop-shop approach to prose, with a high-minded po-mo appeal to the constant recycling of other people’s words as itself a kind of originality. Like many other capitalist ventures, though, this involves taking intricate handiwork done by other people, breaking it up, and selling it off again without permission, not to mention payment. If you have persuaded yourself that invention and recycling are the same thing, then you can’t begin to make sense of someone who would spend seven or eight hours a day laboring over a single line. This puts you in terrible shape with a writer like Salinger, who feels his entire life at stake over a semi-colon. What can he be doing all day in his “bunker” except stewing over his obsessions?

— Cutting and Pasting J. D. Salinger. Adam Gopnik bringing the hammer down on a new bio.