I think he knew , but Charlie somehow manages to escape , turn off the blinking light and somehow will drown . But ANYTHING could change that outcome now and stop it all from happening . Like how could he succeed and result in the rescue of the Losties , we have 3 more seasons .....

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If I could wake up in a differant place , at a differant time , could I wake up as a differant person ? ? ? Tyler Durden