All I know for sure about that book is that whenever the show finally ends, and all the stories in it have been told, if they publish a replica of it, that baby will sell like hotcakes.
Seriously though, if their names are in there, then that’d be a dead giveaway. Evil Queen and Mad Hatter can’t have been called those names in the book if the stories before they assumed those personas are in the book, which they obviously are because we’ve seen pics of Jefferson and his daughter, and of young Snow.
If the book is meant to be a tool for Emma to believe, then it wouldn’t really make sense for there to be fake names in there. But if the name Jefferson IS in there, then Emma’s more stubborn than we thought, coz she’s seen: Mad Hatter’s story, pics of him and his daughter that resemble Storybrooke people, his name (which isn’t exactly common), AND she got a look at his lovely neck scar too. Conclusive evidence much? Not all of that can be explained away as coincidence.
Kinda like the idea of the book itself being magical, but I think if the book were able to course correct and re-write itself, then August wouldn’t have had to do anything to it. And it also wouldn’t work with my theory that there’s no NEW magic in Storybrooke, only existing, stored magic that transfered over, like Graham’s heart. Unless the book came from FTL, and not from our world, so any magic in it originally could still be there. Hmmmm.