Virtual reality represents the harnessing of computer and information technology to realize a long-held vision of humankind: the creation of a 'dream machine'. It has often been stated that going to the cinema to watch a film involves entering a 'dream palace', in which we are encouraged to ＿＿（41）＿＿ disbelief and make the leap into an illusionary world. It can be argued that the history of the cinema is one in which the illusion of total immersion has been progressively sought. Cinerama and other forms of large screen or wrap-around cinema such as the experiments with 3D films in the 1950s, are 42 of this search for technological developments which would provide a strong stereoscopic illusion of the depth of a scene and sense of immersion in 'reality'. Theme parks such as Disney World and Universal Studios also provide sophisticated versions of this film technology coupled ＿＿（43）＿＿ experience rides such as Star Wars, Back to the future, in which the visual information is co-ordinated with surround sound and movement of the vehicle. Yet virtual reality is ＿＿（44）＿＿ an upgraded version of Cinerama or a theme park ride, as it achieves not only a greater sense of presence, but through the use of computer technology has developed an interface which facilitates 'interactivity,' the capacity to direct one's gaze and movements so that one can explore and move around inside the illusory flow of images. It is this ＿＿（45）＿＿ between computer technology and movie-making which makes virtual reality possible.