Originally produced on Broadway by The Theatre Guild, R. U. R. is now considered a classic of science fiction. Credited with introducing the word "robot" into the English language, the play is a dramatic and fascinating look into the lives of the scientists who invite and manufacture a working class of robots. Over time, the robots develop beyond the expectations of the scientists and acquire human feelings. They start a revolt, taking over the world, until every human, but one, is extinct.