In your book, Something Deeply Hidden, you describe how Schrodinger's cat being either dead or alive would rapidly decohere into two branches due to interactions with the environment. Tarun: Wouldn't the cat indeed be in a superposition of states as far as the outside world is concerned until the box is opened? He says even if it's not possible in practice, but practice matters for these questions.Tarun: You can't say the black hole is three dimensional or two dimensional. It appears one way or the other two different observers are from different perspectives.