Written in 1969, Ubik is a futuristic science-fiction novel that transcends genre fiction. Dick's novel is dense with literary substance which has been integrated into a comprehensive universe of his own imagining.The novel takes place in 1992, in a world where nearly every convenience (even the opening of doors) costs money. In this society, the dead and the living interact with one another.Ubik integrates a series of themes – on the surface it is a light sci-fi read; by the first chapter, however, the book is infused, although not laden, with important themes and "literary significance."
Dick was the first SF writer to really get into playing with the heads of his readers, and getting them to think about the nature of reality and their perceptions. For this reason, his books never really grow stale - you can come back to them years after the first reading and find new signposts directing you into previously obscure pathways of your own personality.
Philip K. Dick's searing metaphysical comedy of death and salvation (the latter available in a convenient aerosol spray) is tour de force of paranoiac menace and unfettered slapstick, in which the departed give business advice, shop for their next incarnation, and run the continual risk of dying yet again.