Ok but the act of writing it down would always take longer than the actual unfolding of the universe itself. Just like the halting problem, we can’t skip ahead at any point and we have no idea what will come next.
Let me restate the metaphysics a bit differently. Let's say there's no us, no butterflypeople, nothing at all. Entropy reigns supreme, no information is organized.
Now add the butterflypeople. They write the humanpeople's log book. Information exists in organized form. The humanpeople's bits have been divined out of the great entropic nothing. Maybe that's all it takes?