How does Philip K. Dick use imagery in Ubik?

The imagery is science fiction.Ubik is initially set in the futuristic world of the 1990's. Within this world, people can fly across to other countries in a very short time. For example, Runciter travels from New York to Switzerland at 3.30 am and then back to New York the same morning to begin work. The characters also travel by space transport to a planet called Luna. This, of course, is not a real planet and therefore the reader can guess technology has moved on to the point where people can travel to other universes. This futuristic world has its negatives. In Joe Chip's apartment, he has to pay for everything from opening his door to turning on the television. When asks the objects why, they argue back.