Question

“You are hereby betrothed to me if the entire Torah we have in our hands was given to Moses at Sinai letter for letter”—is she certainly betrothed, such that one who has relations with her would be liable to death by strangulation? And what about: “You are hereby betrothed if Isaiah was a true prophet and not a liar or delusional”? Within the framework of Jewish law, are these accepted as truths, with no significance to independent examination and a personal conclusion regarding their truth, or does Jewish law leave the examination of reality to those who investigate it?