LOL It must be me then. We now have two lots of survivors existing in 2 different time periods - how does that work?

Is Jacob dead or not? He was burned to death, yet turns up telling people he's dead.
Still watching religiously and still totally mystified.
Notice JACK in the non island reality, starting to get confused. I predict the two jacks are somehow converging into one another, and the two universes cannot co exist - almost along the lines of Donnie Darko / Star Trek Alt Reality type of thing....
However, each week throws a new spanner in the works, and makes it almost impossible to keep your theories on track - it's mind bending....
So, here's what I think happened.
1: Juliet triggered that NUKE.
2: The instant the NUKE exploded, it unleashed that energy.
3: We know the energy causes the time travel.....
4: Losties time travel back to the future (from 1970ish), and the bomb continues to detonate....
So in reality 2, because the bomb detonated, the island and everything that should have happened, does not happen. Because the island is under water, the plane doesn't crash, and the losties continue with their alternative life.
Back in reality 1, the losties were not killed by the detonation because the energy made them time travel to the future first. The future at that point was the one we watched in seasons 1 to 5, as at that point, the bomb was only starting to detonate.
So now we have two realities, co existing, and some form of overlap I feelm especially with JACK. He is starting to experience physical signs of things that happened on the island, yet he doesn't even know about the island. He is also recognising faces etc.
What I can't quite work out, is what JACOB and SMOKEY are arguing over. Or how HURLEY can see Jacob, or how the lighthouse works.....or really anything else
Anyway, episode 6 was badass.
G.