The problem with this analysis is that not all jobs and people are interchangeable. A farm hand may become a factory worker, but it is unlikely that a laid off factory worker will become a Database administrator. 1/2 of the population has below average IQ. They cannot move up to more value added knowledge work when their jobs are shipped overseas or replaced by automation.
And just before the industrial revolution, no one could have imagined industrial jobs for the farm hands.
There will be jobs imagined and created that we’ve never heard of before. Some will be in virtual reality. Some will be in repair of parts.