The Merger Theory by Lost and Found

Since Season 3 when we got to know the Others a lot better it became obvious that these people know something important. From the way that they acted it was like they knew a secret, yet beautiful truth. The ones who followed the orders that Ben gave them without delay. These Others at times seem that they are in perfect bliss. Yet on occasion they will kidnap, murder, and enslave. They will take these actions with no remorse, and without any hesitation. We watch as Mikhail and Bea give their lives. And all of this for a yet unknown cause.

Now I believe in the 2 time lines that will have been created in the Incident. If u died in one timeline it doesn't mean that you aren't alive in the other (alt) timeline. So, now lets assume that Ben was lying when he said in the season finale that he had never met Jacob. Ben as we well know has been one step ahead of everyone else. At least most of the time. I believe Ben has met Jacob. Possibly at the temple after Sayid shot him. That doesn't matter right now. What does matter is that Ben has his orders. We must get to the point where the incident happens and Alt timeline is created. This is all that matters. If successful then all that have died will come back. When the two timelines are created and someone, say Charlie is alive in the new timeline. Well then when the two timelines merge (if there are 2 timelines then yes they will have to be eventually merged) then Charlie will be alive again. This is why Mikhail and Bea gave their lives without a hesitati! on. This is why it looks as if Ben doesn't care about peoples lives. He know that if he is successful in completing Jacobs plan then all these casualties will not happen. At the same time he also knows that if they are unsuccessful in this then the Good side will not have a chance is the coming war.

PS Good side = Jacob, Ben, Illana, Bram and Eloise
Bad side = MIB, Charles Widmore, Mr Paik
Still undecided on Richard and Dharma