[Transcriber Note: This etext was produced from IF Worlds of Science Fiction May 1954. Extensive research did not uncover any evidence that the U.S. copyright on this publication was renewed.] All along the line of machines, the men's hands and arms worked like the legs of spiders spinning a web. They wound wire and hammered bolts, tied knots and welded pieces of steel and fitted gears. They did not look at each other or sing or whistle or talk or laugh. And then—he made a mistake. Instantly he