Various problems brought by quantum gravity present more unsolvable ontological and epistemological problems. 量子引力中的各種問題帶來了一系列意義深遠的本體論與認識論的問題。
As foundational as these epistemological claims are to Waldron and Fallon\\\'s stances, they are highly controversial. 沃爾德倫和法倫的立場如同這些認識論的觀點一樣具有基礎(chǔ)性，它們具有高度的爭議性。