What was causality?
An apparently simple question had many answers, and at the same time, none of those could be said to be complete.
If this kind of question was asked to the average earthling, he would have probably ignored the question and continued watching bite-sized videos from their phone, to then ask himself what time paradox allowed him to skip one hour of his own life.
In a way that one too was one answer to the question: applying the principle of causality, the choice of that person of getting dopamine hits for one whole hour in the form of videos caused the apparent time paradox.
In short, every effect followed a cause, and every reason had to be logically concatenated to its own result.
Had that same question been posed to a physicist, the concept of the light cone or, in general, the whole branch of quantum physics would have complicated the answer notably.