. . . Luddites were those frenzied traditionalists of the early 19th century who toured [England] wrecking new weaving machines on the theory that if they were destroyed . . . old jobs and old ways of life could be preserved . . . At certain times in his life each man is tempted to become a Luddite, for there is always something he would like to go back to. But to be against all change-against change in the abstract-is folly.