How Google Maps offers me an alternate route that is longer, slower, eats more fuel, and has tolls on it for some reason
(lemmy.world)
They literally buy books like they do any other decoration. They have someone build a bookshelf, then buy enough footage of books to fill it, matching the style of the room.
Classic room = classic style books
Modern room = modern style books
They've never been removed from the shelf, because it's decoration, not literature.