So we can either mark this epi off as: Desmond was gettin' ready to turn the key and had a premonition of things that could have been, but it was like he went into the past WITH a premonition of things that have already happened to him....just like him meeting Charlie on the street corner, Desmond already knew what he had been through but Charlie had no idea what he was talkin' about. So in the "flashbacks" Desmond had prior knowledge of the island experience but was in the timezone of "Pre-Island" So does that mean that it was all a dream or is he flip floppin' back and forth through time ?