So is Jakob the guy that was mentioned in the dream-vision that Locke had in the sweat-tent? The dream where Locked saw all the Losties in the airport, camera visiting each one of them through Locke's eyes, as if searching for someone, some voice telling Locke this person will be alright and that will be fine, but at one point Locke hears "only you can help him". At that point I thought "him" was Jack, but looks to me it was Jakob being referred to, there..

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"Bear...? Is that you?"-- Hurley S03E4