What's the difference between a Hollywood special-effects blockbuster like "Terminator 2" and a hard-core porn film? Very little, claims novelist, essayist and footnote fetishist David Foster Wallace.

1990s moviegoers who have sat clutching their heads in both awe and disappointment at movies like "Twister" and "Volcano" and "The Lost World" can thank James Cameron's "Terminator 2: Judgment Day" for inaugurating what's become this decade's special new genre of big-budget film: Special Effects Porn. "Porn" because, if you substitute F/X for intercourse, the parallels between the two genres become so obvious they're eerie. Just like hard-core cheapies, movies like "Terminator 2" and "Jurassic Park" aren't really "movies" in the standard sense at all. What they really are is half a dozen or so isolated, spectacular scenes -- scenes comprising maybe twenty or thirty minutes of riveting, sensuous payoff -- strung together via another sixty to ninety minutes

It seems significant, somehow, that Infinite Jest—the big buzzy signature meganovel of the nineties—was set at the end of the aughts. Most of the book’s action appears to take place in 2009, which means that we’ve all just survived the Year of the Depend Adult Undergarment. It also means that David Foster Wallace’s prophetic window has now (at least in the most literal sense) closed forever, in the same way Orwell’s did when we reached the actual 1984. And in fact Infinite Jest’s vision of the future does, these days, look slightly dated. One of the book’s nightmare scenarios is the existence of an entertainment so addictive that people watch it until they die—a film they access via a machine Wallace calls a “teleputer,” which turns out to be some kind of ungodly hybrid of HDTV, computer, telephone, and VCR; it crunches data on “3.6-MB diskettes” and plays films off actual physical cartridges. All of which carbon-dates the novel’s creation precisely back to the early-to-mid-nineties (i