It's written in easy language, a fast read. First published 1957. This isn't a funny book about little furry creatures on another planet. Quite the opposite, it's dead serious. It's a very normal book by PKD standards.
Reality never slips into something obscure.
As often in his works the story involves the further evolution of mankind. The New Men have great ESP talents and an extremly high IQ, making ordinary people second grade. It's also set in a future where normal bars are replaced by drug bars and alcohol is strictly forbidden. The book is similar to The Three Stigmata of Palmer Eldritch in that everyone is waiting for the return of a man, coming home from space travel, and holding some kind of great secret. As often, it's about people , and you really feel for them.