The prevalence of science fiction readership among those who create and program computers is so well-known that it has become a cliche, but the phenomenon has remained largely unexplored by scholars. What role has science fiction played in the actual development of computers and computing? And likewise, how has computing (including the related fields of robotics and artificial intelligence) affected the course of science fiction? The 18 essays in this critical work explore the interrelationship of these domains over the span of more than half a century.