can you say where you got this idea?

"...和牛頓時代又有不同，牛頓是根據自然現象抽象出的理論，而老愛呢，他是從紙上推演出了自己的世界，一個可能完全不能用人類的感官去體驗的世界。這個世界可能不是一種“存在”，如果我們把“存在”作狹義的解釋的話。我們之所以接受它，主要因為它的整個推演過程在假定的前提下，符合既有的物理和數學的邏輯。愛因斯坦時代證明人類的思維可以完全依據符號系統自身的邏輯來演繹，而不需要實際的觀察和體驗"

I sense that this is correct but I want more proof. To me this shows exactly how the human cognitive process evolved: first from the side of "Empiricism", later from side of "metaphysics".

2 the above, if correct, implies that Einstein's general relativity is NOT something "accidental", which might get overthrown someday as you mentioned, because it is a more generic system which made the Newtonian physics as a early example in the history of physics. In this sense, the general relativity theory will only get improved but not replaced.

my 2 cents