On Logic and Alternate Universes

[Angrboda]

If I'm not misunderstanding FtR, he's suggesting that their is some descriptive characteristic of logic in our universe that couldn't equally be descriptive of a system in another universe wherein things that don't make sense in our system do in theirs and vice versa. This would be the assumption that there is an essence to 'logic' independent of the specific laws of logic enumerated. If I understand correctly, he's asking what makes logic 'logic'? I don't personally think there is an essence of logic which would be equally applicable to a different system in another universe, but I don't 'know' that. I'm not even sure that I understand FtR's point.