Revealing mistake: Inside Maya's room, her bookcase has multiple copies of "Practical Botany", "Emotional Design", a (nonexistant) novel called "Heat it up" by "Keller Heart" etc.
Revealing mistake: When the player meets for the first time the librarian, the books on the cart and on the desk are the same cloned pile with each book in the exact same mismatched faux-random order.