What I think the entire plot of the game will hinge on with regard toBooker, and the seemingly repeated nature of his trip to Columbia (the dialog from the couple in the beginning etc.), is whether or not it's BOOKER himself going through this over and over again, or is he experiment subject #946, one in a million different instances of the rescuer going to get the girl in Columbia.
Sorry to shit up the thread with so much spoiler text, all. As B33 said, this is all just speculation and/or info gleaned from officially released information. Just trying to keep it safe for those of you on black out.
The premise of the game may seem straightforward, but the elements we've discussed heavily indicate that BioShock Infinite will be subverting the tropes one would expect from its marketing synopsis.
I'm certain the majority of the game's intrigue hinges upon
the specifics of Booker's ascension to Columbia, what the talk of an "experiment" means, the true intentions of his "employers," and whether the protagonist is a independent being or a "testtube creation" (à la Jack).
In a way, this quandary is brilliant on Irrational's part, as Jack was
a relative nonentity for a majority of BioShock
has a persona and history that's pervasive throughout, rather than nonintrusive.
Many apologies for the spoiler tags. Nothing above is deleterious to the first play through of the game (unless you're on a stringent blackout).