Book excerpt: This is a classic science fiction short story by Robert Sheckley, a Hugo and Nebula Award nominated author. The story deals with the subject of artificial intelligence and the questions that arise from allowing them to have the power to decide right from wrong. This work is part of our Vintage Sci-Fi Classics Series, a series in which we are republishing some of the best stories in the genre by some of its most acclaimed authors, such as Isaac Asimov, Marion Zimmer Bradley, and Robert Sheckley. Each publication is complete with a short introduction to the history of science fiction.