There is an effect where the progress of science can stay the same, but the progress is in expanding details. So instead of Einstein reshaping our understandin

There is an effect where the progress of science can stay the same, but the progress is in expanding details. So instead of Einstein reshaping our understanding of spacetime, we gain a more detailed understanding of the consequences of that discovery. The average cosmologist these days probably has a superior understanding of relativity than even Einstein did. Consider the map of human knowledge to be an ever expanding tree. If you have growth happening at the same rate, it can seem slower, because it's hard to grasp the full breadth of the growth now. I don't know if I'm explaining it that well. Our understanding of the universe is extremely detailed compared to even 50 years ago, and we continue to advance rapidly. It's just that advancement is spread out much more, and is much, much more detailed and nuanced.