Book excerpt: Marshall McLuhan died on the last day of 1980, on the doorstep of the personal computer revolution. Yet McLuhan's ideas anticipated a world of media in motion, and its impact on our lives on the dawn of the new millennium. Paul Levinson examines why McLuhan's theories about media are more important to us today than when they were first written, and why the Wired generation is now turning to McLuhan's work to understand the global village in the digital age.