"It is a starkly empty film, preoccupied as it is with the thought that people themselves might be hollow. The plot depends on the notion that the replicants must be allowed to live no longer than four years, because as time passes they begin to develop raw emotions. Why emotion should be a capital offence is never sufficiently explained; but it is of a piece with the film’s investigation of a flight from feeling – what psychologist Ian D Suttie once named the “taboo on tenderness”. Intimacy here is frightful (everyone appears to live alone), especially that closeness that suggests that the replicants might be indistinguishable from us. This anxiety may originally have had tacit political resonances. In the novel that the film is based on, Philip K Dick’s thoughtful Do Androids Dream of Electric Sheep? (1968), the dilemma of the foot soldier plays out, commanded to kill an adversary considered less human than ourselves, yet troubled by the possibility that the enemy are in fact no different. Shades of Vietnam darken the story, as well as memories of America’s slave-owning past. We are told that the replicants can do everything a human being can do, except feel empathy. Yet how much empathy do we feel for faraway victims or inconvenient others?"