This novel starts out firmly in the realm of sci-fi, with technological advancements, off-world spaceships, and people with psionic powers working for competing corporations, set in the near future. Since it was written in 1969, the future in the book takes place in the year 1992. Looking back from the vantage point of 2015, the 1969-imagined technology of 1992 is pretty amazing. I was particularly taken with a scene where characters input some information into a box, which microscans it and produces a punch card, which is then into a phone's receptor slot in order to make a phone call. And all of that happens while they're on a ship coming back to earth from the moon. I won't attempt to try to describe the plot (since it's Philip K. Dick); suffice it to say that there are characters who die (or do they?), recently dead characters who live on in some some of frozen half-life where they can communicate with the living, and time travel (or maybe not). It's everything one might expect from Philip K. Dick. Loads of fun.