I love a good Sci-Fi story and Mr. Dick is one of the best. He was kind enough to allow some of his writing to be in the public domain upon his death. Perhaps he did this because he always saw the bigger picture. The importance of telling stories warning about possible futures if we are not paying attention. The importance of paying attention, now more than ever. This story has it all: Space ship, Martians, truth detector and an ultimate weapon. What more would one want from a great Sci-Fi story? Enjoy!