By definition faith is a belief that does not rest on logical proof or material evidence. Your response is evidence that nothing is incontrovertible.
Have you ever studied any philosophy? Do you actually disagree that all reasoning depends on presuppositions? e.g. tell me the difference between ‘faith’ and ‘presuppositions.’ I stuidied philosophy in college and saw again and again how hard science students were frustrated by epistemology. They actually got angry at finding out their scientific worldview was very small so they just dismissed the classes as hocus pocus. Of course they had no ‘logical’ answers to the challenges posed. But that didn’t matter, they were scientists.
adj.
Impossible to dispute; unquestionable:
Again, the fact you controvert my post is further evidence that nothing is incontrovertible.