When my friends and I were young and awed by David Foster Wallace (whose papers were recently acquired by the ultra-acquisitive Harry Ransom Center) we saw the author’s ever-present head scarf as a sort of tourniquet: it keeps his brains in, we thought. We were joking, of course. We didn’t know how tortured he really was. Wallace’s terminal self-consciousness seemed to us to be symptomatic of the times. If anyone had the intelligence and stamina to point the way out of our post-postmodern labyrinth, it was him. And, for a while at least, Wallace seemed willing and able to shoulder the burden. ‘For me, the past few years of the postmodern era have seemed a bit like the way you feel when you’re in high school and your parents go on a trip, and you throw a party,’ he said in 1993, in a long interview with the Review of Contemporary Fiction: