This was Graduation Day. The senior class from the Star Institute of Advanced Science was scheduled to go through the Museum of the Conquered and observe the remnants of the race that had once ruled this planet. There were many such museums maintained for the purpose of allowing the people to see the greatness their ancestors had displayed in conquering this world and also to demonstrate how thorough and how complete that conquest had been. Perhaps the museums had other reasons for existing, but the authorities did not reveal these reasons. Visiting such a museum was part of the exercises of every graduating class.