Well I have seen all the posts on the theory that John Locke will be the one to save them all.
I am now a firm believer.
There is something that I have not seen brought up yet in regards to this theory. The reason that I now believe this theory.
Season 1: The Greater Good
Locke thanks Sayid for saving his life.
Sayid replies: "I did it because I sense you might be our best hope of surviving here"