The entire &quot;job&quot; concept was born with the industrial revolution, relatively recently. Miraculously it survived through post-industrial age, mostly through paper-shuffling clerical jobs (nobody could have predicted it a century  ago). Now, either the notion of a job will be gone altogether (see pre-industrial history on how it will look like), or some other activity will take the role of paper shuffling as the archetypal job (instructors? servants? We can only guess now).