The final chapter of Don DeLillo’s epic 1997 novel “Underworld” has proven a prescient warning of the dangers of the digitized life and culture into which we’ve communally plunged headfirst. Yet no sentiment, no open question posed in his 800-page opus rings as ominously, or remains as unsettling today, as this: “Is cyberspace a thing within the world or is it the other way around? Which contains the other, and how can you tell for sure?”
