"The newly emerging dominant group is "knowledge workers." The very term was unknown forty years ago. (I coined it in a 1959 book, Landmarks of Tomorrow.) By the end of this century knowledge workers will make up a third or more of the work force in the United States--as large a proportion as manufacturing workers ever made up, except in wartime. The majority of them will be paid at least as well as, or better than, manufacturing workers ever were. And the new jobs offer much greater opportunities."