Earlier quoted context omitted.
This book tries to argue that we've got as close to objective truth about the universe as we'll ever do: https://www.amazon.com/End-Science-Knowledge-Twilight-Scient... and that most remaining science is just find of filling in the tiny bits. I personally don't expect anything that will change with respect to backwards time travel or faster than light travel.
And like all such books, almost certainly it is wrong. Backwards time travel or FTL are not measure of progress. Even with the field of "fundamental" physics: 1. There are lots of things we do not understand in cosmology (cosmological constant, nature of dark matter, matter/antimatter asymmetry, force unification at very high energy scales, gravity at high energies, etc). Each of those could potentially revolutionize…
I'm saying that imagine 50% of the population works in blue collar general labor or semi-skilled labor fields. Now in this hypothetical worlds, all those jobs are managed by autonomous robots. Also we have a green power that is sustainable, storable, sufficient for even double the population, and can be held in high densities at low volumes. So there are now innumerable sectors within the economy that we don't need people themselves to learn. That leaves more time for people to take extended amounts of time to learn and study. I mean quite literally a Star-Trek "post-scaricity world" in a lot of ways. People use time to further themselves and expend time on cultural or scientific endeavors. Life is no longer about struggle and survival since money clearly would have no value if any and everything can be made or consumed for free. I mean it's really interesting to think that the only "conflict" that would exist is between people trying to min-max life in terms of achievement. There would be no achievement in religion, money, or ownership since everybody can do it.
Ultimately what I'm saying is that a lot of our advances are contingent upon other sectors becoming automated and allow for more people to get into academic sectors.