Ok, I adore Belle. And I’m thrilled when she makes an appearance — Emilie is criminally underused on this show. But this scene takes the Human Google Project plot device to a whole new level.
I think the only reasonable interpretation at this point is that the book we see Belle holding is actually always the same book — the Book of All Answers! (Coming soon to a store near you, and available at 50% off with your next MacGuffin purchase.)
For the heck of it, I was trying to figure out if such an artifact actually comes up in some mythology — all I could think of was Lloyd Alexander’s ‘Book of Three’. And I bet Borges probably has a short story about something like that.