Answer

If it is clear that the Jewish law in question is based on an error, then if the error was there from the outset (already when the law was established), it is void. But what seems clear to you is not always actually clear. It is worth asking and consulting beforehand. It is also worth checking whether the Jewish law is really based on those errors (it is possible that you are mistaken in your understanding of the law). For example, regarding “your luck caused it,” relying on luck is not necessarily mysticism. Sometimes it is an expression for a chance event, and therefore if it happened to you, it is your problem. The term used is “your luck caused it.” So too, for example, with a spring or “luck” in the Talmudic passage about a presumption established after three occurrences in Tractate Yevamot (regarding a woman whose three husbands died). But if you have an explanation, then of course there is no reason to attribute the matter to luck even in that sense.