The American mathematician Rudy Rucker (1946) He wrote a short story that serves as an example of a vicious circle or looped thinking. In the aforementioned story, a couple—the Goodcheese—finds a baby at the door of their home. It is 1969 and the kind couple takes care of the baby who, over the years, becomes a notable scientist named Cynthia; an honors student earning her doctorate at California Tech University.