Indeed interesting. But I also wonder if we're reaching a "saturation point" in terms of goods & services, as well as technology. At least in the case of the developed nations.
Technology keeps improving, of course, but perhaps there's a diminishing return regarding much of our resulting productivity. And in the loss of jobs, which also fuels an economy. When robots are building our cars, what happens to the automobile work force?
I remember when I moved into Army Field Grade Officers' quarters at Fort Sam Houston, in San Antonio, Texas. Opposite the kitchen was a maid's suite, with a bedroom and its own bath. In the 1930s, when this house was built, the more senior officers like me had a live-in maid.
Well, in the late 1980s we didn't have a maid, nor need one. A dishwasher, vacuum cleaner, washer & clothes dryer, and countless other modern conveniences meant we really didn't need any. But that meant no job for a maid. Not for me nor for any of my fellow officers, who used those rooms for other purposes, like guests or as offices.
How does the loss of all those jobs impact the economy? I dunno. And how much do incremental technology improvements today really impact our lives, to make us more productive than we already were? Difficult to measure.
And so I see a lot of unknown variables here.