‘if we consider ‘discovery’ not to be a process of creation but simply the realization of something that has already existed, something old and not new, then our perception on these matters drastically shifts. at one time the act of perception was considered as creation. the eyes were said to out beams or rays which struck objects, thus making them visible. vision as transmission.’ (bill viola – reasons for knocking at an empty house, writings 1973/1994 – p.92 thames and hudson, 1995)