“Virtual Reality is electronic simulations of environments experienced via head-mounted eye goggles and wired clothing enabling the end user to interact in realistic three-dimensional situations.”
George Coates, 1992 
Program from invisible site—a multimedia performance work
The key to defining virtual reality in terms of human experience rather than technological hardware is the concept of presence. Presence can be thought of as the experience of one’s physical environment; it refers not only to the surroundings as they exist in the physical world, but also to the perception ...