To expand on my previous response… This was a hypothetical question about something we have no fundamental understanding of: causality. Causality is a foundational concept that is implicit in how we explain how stuff behaves, but if we try to examine (or debate) it directly, as a feature of the world rather than a component of our models of the world, we find we don’t know what we’re talking about. Which is why I’m not much inclined to talk about it.