I posted this theory a month ago on german Lostpedia as I watched LAX. Wanted to know want you think about it, cos on German Lostpedia is no response and no blog. I try to translate:
The alternate timeline has nothing to do with the jughead bomb. The bomb just caused the timeflash wich transported the Losties to present time.
My theory is that all people, who die on the island in the original timeline end up in the alternate timeline. The alternate timeline is like a loophole where the people have a chance to fix everything. That means all people who appear in the alternate timeline are dead in the original timeline. I guess that Jack will die at last by a wound on his neck. This is why Jack examines his wound in the mirror on flight 815. Maybe the people who die in the alternate timeline ends up in the original timeline, thats why Charlie wanted to die and looked so angry to Jack.
What do you think about that? I know that will be a sad scene when all of them gonna die.. mayby the alternate timeline is finally the happy end?