One of the ways in which programmers make up for this deficiency in memory space is by using certain sensory " cheats " to produce the effects they are looking for . Instead of programming every single detail of the desired image or sensory impression, the programmer uses certain key elements of the experience to evoke an overall sensation from the receiver of the impressions . Simsense producers and editors use a similar technique in producing simchips . The user’s own imagination fills in the " gaps " in the sensory information to produce a contiguous whole, and the entirety of the impression is perceived with minimal system space occupied by the necessary imagery .