we knock on the doors for them to open, to let us out, but those on the other side don't hear us and they too knock on the doors for us to open and let them out and when they open it's ourselves we bump into but we don't pay attention to ourselves and we say we want out and they say we want in, don't take the door away with you, we wouldn't have anything to open on the way out, there would remain a blank spot in the wall, we won't find any way to get out.