"This world is like a Braun tube before you've looked in it. ...It's the world of the cat box before you open it. As long as Aunt Natsuhi says she took a walk with Grandfather, and as long as no one can confirm that it's a lie, it's possible to display `Aunt Natsuhi taking a walk in the rose garden with Grandfather' as Natsuhi's reality. That means it's possible for Grandfather to appear."