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This book would not have been conceived and could not have been written without the generous and patient assistance of many people. My heartfelt thanks to Rita Aero, Avron Barr, John Brockman, Donald Day, Robert Eckhardt, Doug Engelbart, Brenda Lauel, Howard Levine, Judith Maas, Geraldine Rheingold, Alan Rinzler, Charles Silver, Marshall Smith, Bob Taylor, David Rodman, and Gloria Warner. And thanks to Alan Turner, who prepared my words for web publication.

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