Let me start out by saying I am spoiler-free and would like to remain that way.
A couple of days ago I was thinking and came up with the following theory:
- NOTE THAT I WILL BE TALKING ABOUT COMIC CON 2009, LEAVE NOW IF YOU DID NOT WATCH COMIC CON OR DO NOT WANT TO**
At Comic Con the Lost creators did say that there will be no more time travel, flash forwards, flashbacks, or anything like that. However they can't just have one storyline running or it could get boring, they have to have a storyline where they are following at least two groups of people. So...I think that the Hydrogen bomb set an alternate time line, Jack and crew were sent to the year 2007 or 8, where Sun, Ben, fake Locke was, then a separate time line was set where the plane never crashed. That is why the LOST was black lettering with a white background. I'm not sure how the two time lines will relate, but that is my theory and in the words of Jack, that's my theory and I'm sticking to it.