We are now in the third stage of the industrial revolution. The first involved machines which extended human muscle; the second used machines to extend the human nervous system (radio, television, telephones); the third is now utilizing machines which extend the human mind-computers. About half of all service workers (43 percent of the labor force by 2000) will be involved in collecting, analyzing, synthesizing, structuring, storing, or retrieving information... By 1995, 80 percent of all management will be knowledge workers.
The pace of progress will accelerate so that even engineers and technical managers will find it necessary to recycle back through school after no more than ten years. In particular fast-moving technologies skills will become obsolete every five years or so.