Most fans of science will tell you that Carl Sagan was one of the most remarkable scientists of the 20th century. His greatness lied not in his discoveries or breakthroughs but is his creativity and his ability to communicate science to others. He wrote several books, among them a science fiction novel. Carl Sagan's novel, Contact, is by no means a masterpiece. However, it is a perfectly enjoyable piece of fiction. I have read it numerous times. There are several notable things…