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Another book on virtual reality? Fear not. The latest addition, Possible Worlds (Westview Press, £17.95, ISBN 0 674 95358 4) may kick off with a bog standard history of technology, but it soon blossoms into Ralph Schroeder’s real area of interest—the social dynamic of VR. A cogent guide to realist and Weberian viewpoints, backed up with diligent case studies of VR in youth culture, entertainment and education.