Around 1900, most inventions concerned physical reality: cars, airplanes, zeppelins, electric lights, vacuum cleaners, air conditioners, bras, zippers. In 2005, most inventions concern virtual entertainment — We have already shifted from a reality economy to a virtual economy, from physics to psychology. ~Geoffrey Miller
Many commentators and researchers have indicated a supposedly imminent end to work, or at least the infamous ‘47% of jobs will be displaced’ within 20 years or so due to the inexorable advance of machines. This is at best a distraction and at worst grossly exaggerated and overhyped, as one of the authors of the infamous papers has noted.
However if we extend the timeframe out and consider the question:
How much could the world of work plausibly change by the end of the 21st century?
Eighty-four years from now will human’s work to earn a living or will machines do all the labor?
Then I believe we have framed a different vision of the future, one where it may be more plausible to consider that human’s will work 15 hours per week (if at all) as predicted by Keynes in 1930.
 John Maynard Keynes, Economic Possibilities for our Grandchildren (1930) – “everybody will need to do some work if (s)he is to be contented – three-hour shifts or a fifteen-hour week may put off the problem for a great while. “