But the term, "discovering something scientifically" is very vague.
... yep - not everyone has the same concept of "science" ... for example, in Karl Popper's philosophy, science cannot identify "truth" - science is a series of conjectures and refutations that can only lead us in that general direction ... and if at some point we were to propose a conjecture that was the "truth", science could not indicate it as such - we'd just continue chugging along looking for a refutation to our latest conjecture.
And so in a Popperian sense, the question "Is there anything you know that was not
arrived at scientifically?" seems to be overshadowed by the question "Is there anything you know that was
arrived at scientifically?"