It sounds like Jiro was saying that the Jester really does not assume that “The content of the boxes can be deduced from the the inscriptions.” He just assumes “The inscriptions are either true or false,” and it logically follows from what the inscriptions say that he can deduce the contents. So the problem wasn’t making an assumption about how the contents could be discovered, but making an assumption that the inscriptions had to be either true or false.
It sounds like Jiro was saying that the Jester really does not assume that “The content of the boxes can be deduced from the the inscriptions.” He just assumes “The inscriptions are either true or false,” and it logically follows from what the inscriptions say that he can deduce the contents. So the problem wasn’t making an assumption about how the contents could be discovered, but making an assumption that the inscriptions had to be either true or false.
Ok, thank you for that clarification.
That is correct.