Board Thread:Theories and Speculation/@comment-995176-20161123061207/@comment-734582-20161124174402

Ravenlot 27 wrote: Yet Obito's name was engraved on the memory stone as a name of the hero who died during the war, which means all the people certainly held him for dead until it was proven otherwise. Yea but like i said, the last we saw of him he was alive. His fate of death was implied, unlike Jiraiya who we saw die and sink.

Ravenlot 27 wrote: Madara himself stated that him surviving the collapse is almost a miracle.

But it's not. Madara simply made him think that. He has Zetsu who can keep him up to date about everything. They can also encapsulate people and move through the ground. I think that in hindsight, it's fairly clear that Madara directly saved him. (and made up the story to hide his true intentions, namely that he wanted to manipulate Obito)