Well, we don't actually have the fundamental laws of the universe yet.
We have laws that are relatively more fundamental than others, and my argument doesn't require that the law be fundamental in an absolute sense. If scientists discovered that orphans are fireproof, and ran out of explanations for why the category "orphans" is part of the rule, they would essentially have proven it's supernatural, even if, oh, they don't rule out the possibility that both orphans and priests are fireproof.
Why would they run out of explanations? All that leads to is "we don't know why yet, but we'll think of something".
And maybe trying to get funding for a bigger particle accelerator.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.