Robert A. Heinlein and Issac Asimov were old army buddies that had a friendly rivalry their entire science fiction writing careers. Heinlein was a best selling author years before Asimov, but Asimov was a genius and his stories were often thought of as better written and thought out. Heinlein was quick to realize that the core audience for his work was horny young men, so almost all of his stories had at least a mild sexual element. Asimov was more of a thinker than a lover, thus his most lasting works involve his famed Three Laws of Robotics. But Heinlein…