For some reason, the poster made me think of Silent Hill 2 with Mary's letter, and how it will eventually go blank after a certain part of the game. That's why I had the idea to keep looking at it throughout.
Gotdamit! Another detail I missed in another game.
Don't worry, that's definitely not a detail I caught on my own, but it *is* kind of mind-blowing when you think about it from a story perspective.