That's good, isn't it? It means we've discovered the actual fundamentals of several areas. People still need to know how forces work, thermodynamics, that kind of thing.
New areas build on those areas so we don't expect them in a course about the fundamentals.
It would be concerning if every 20 years the lessons got completely turned upside down.
> It means we've discovered the actual fundamentals of several areas.
But there is some evidence that this is not the case. For example, quantum field theory and general relativity are not quite compatible. [1][2] The mechanism for charge formation in triboelectric effect (when you rub things together) isn't well-understood. [3][4] Turbulence still cannot be analyzed satisfactorily. [5] This last one is even mentioned in the Feynman Lectures [6].
Also, generally, I think we should be very skeptical of the claim that we live at the pinnacle of human achievement and the end of the history. It seems quite arrogant to me, and it's against the spirit of the Copernican principle.
[6]: "Finally, there is a physical problem that is common to many fields, that is very old, and that has not been solved. It is not the problem of finding new fundamental particles, but something left over from a long time ago—over a hundred years. Nobody in physics has really been able to analyze it mathematically satisfactorily in spite of its importance to the sister sciences. It is the analysis of circulating or turbulent fluids." (https://www.feynmanlectures.caltech.edu/I_03.html)
> Also, generally, I think we should be very skeptical of the claim that we live at the pinnacle of human achievement and the end of the history. It seems quite arrogant to me, and it's against the spirit of the Copernican principle.
New areas build on those areas so we don't expect them in a course about the fundamentals.
It would be concerning if every 20 years the lessons got completely turned upside down.