User blog comment:TheBlueRogue/Bioshock Infinite DLC: Clash in the Clouds released, Burial at Sea announced/@comment-124.170.13.126-20130801220605

Something more is definitely at play here. While Elizabeth coming into this Rapture to help this Booker could conceivably make some sense, if the Bookers in each reality stem from the same birth, then Booker would be 83 in 1957 Rapture. Maybe he's taken some age-defying plasmid, but he certainly doesn't sound like an 83 year old, nor does his hand/forearm look like an 83 year old's when he lights Elizabeth's cigarette.