Variable Man (Version 2)

Philip K. Dick wrote some great Science Fiction and here is an example. Published in 1953, in Space Science Fiction, t his story explores an earth that is rigidly bound both by centuries of single minded focus on war, and on what happens when humans have learned to depend entirely on a mechanical calculator/computer to tell them what to do. There is no room for a factor outside known factors, something to throw all calculations off. A man from the past. He fixed things—clocks, refrigerators, vid