Is Rowling successful in creating doubt as to whether Dumbledore is really dead? I never bought into it, but that was in part because I knew she had stated that no one would return from the dead in her books. I cannot help think that this would have been a strong red herring if I had not known that. But I think I would also be disappointed when it turned out Dumbledore was not back. As it is, I like the Aberforth enigma.

We also learn that you cannot disapparate from inside a Fidelius Charm.