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Virtual reality might seem like the stuff of science fiction, but it has been in use in various forms since the 1950s. The technology is being developed for use in education, professional and military training, therapy, entertainment, and design. But is a simulated world a better world? Experts caution that virtual reality could be physically and emotionally debilitating. They predict that society could go into decline. Is this simply fear of progress, or is it something to take seriously? Readers will learn the hot-button issues associated with virtual reality and whether we should be excited or afraid of this incredible technology.