Refugees+
Oh I'm sure there are rules. I don't do magic, so I don't know the rules, and I don't know if the rules are the same in every dimension with magic or how that magic varies if it's in a world that doesn't naturally have it. But it could always be a higher level of science, depending on what it is. Modern people in ancient times are sure to be looked at as magical, mystical, and potentially dangerous based on the technology they have. I'm sure there are rules. I think it's more a matter of whether or not those with those particular abilities would be willing to share those rules than whether or not those rules exist.
What's sideways hell dimension physics?
If you only have one data point, you really can't expect to be able to make much sense of the information, can you?