Hmmmm. The scuttlebutt around the internet is that the island was a kind of purgatory. Really? I don’t understand how they came up with that. That seems like an obvious misreading.
Here’s my take, and I think it answers some of the questions posed above.
Everything in Alt-Universe was some sort of after-life. Or rather, after-life and before-nextlife.
None of that was “real”. It was entirely constructed by the personalities that were present there. It was orchestrated (by them) to get them together, to remember the most important part of their lives and the most important people in their lives.
Everyone in Alt-U was dead. But they all died at different times. Charlie drowned. Ana Lucia got shot. Jack died in the Bamboo forest after saving the island. We don’t know how or when Hurley or Kate or Sawyer etc. died. But, after they all died they were in Alt-U.
All the stuff on the island was real life. A crazy one. The atomic bomb that went off didn’t have anything to do with Alt-U. What it did do was stop the time jumps in the real life island. It didn’t kill Juliet, she just jumped back to the present along with everyone else, but she was still broken from the fall, and she died.
I think it is pretty easy to understand when you look at Hurley and Ben. On island, Hurley became the Protector, and Ben his helper. They lived a long, and I’m sure surreal life on that crazy island. In Alt-U at the Church Hurley told Ben he was a good number 2. They remembered a life we aren’t privy to.
That sound about right?
VC
(ps. maybe some in alt-U had already gone on ahead, and just came back to “Help” the others – like Jack’s dad may have. Maybe Rousseau? Maybe Ben’s daughter? Or. . . maybe those two aren’t ready to go on, just like Ben wasn’t or Faraday wasn’t, or Miles, etc.)