Scientific thinking has to assume the uniformity of natural causes, if not eternal, at least holding true for the very present. Scientific thinking makes metaphysical assumptions concerning time. It seems that the point that betty boop has just raised concerns the variable scope of our common ground as opposed to the full extent of reality. Like good lawyers, a scientist with an ounce of metaphysical sense has the opportunity to narrow the scope to make their preferred determinations.
That simply isn't true. the question is malformed. It is no more answerable by yes or no than My question to you: have you stopped having sex with your mother?
More is required of an answerable question than grammatical correctness.