One day, when we human beings have really refined the art of controlling our environment, the earth will spin a little differently on its axis. Imagine how much more productive the factories could all become if nights were shorter and days were longer. Those of us who push a treadmill day after day could push it harder, more of the time. And that would be just wonderful, wouldn't it? What's really so urgent now? Must you move heaven and earth to get what you are after? Won't it come in its own time if you just relax?