“Retrograde time is forward time which has passed the turning point; then as it turns back it is freighted with the load of accumulated knowledge. It is information rich. Logically, then, in its retrograde tracking, it would divest itself of its knowledge: teach rather than learn, so that when it arrived at the other end, it would be information poor, even info empty.”

American science fiction writer and novelist

Philip K. Dick was an American science fiction writer and novelist. He is known for work that questioned reality, identity, and perception, and for stories that often unsettled the line between the ordinary and the strange. He wrote 45 novels and about 121 short stories, with most of his short fiction appearing in science fiction magazines. His fiction often followed characters facing alternate realities, false environments, powerful corporations, authoritarian rule, drug use, and altered states of consciousness. He is regarded as a major figure in 20th-century science fiction.