User blog comment:Testxyz/17/@comment-206.71.232.130-20140212213119/@comment-75.36.138.22-20140303220226

Its even simpler than that. Based on the 'theory' they have built this story around, there are  Infinites of everything. So there are plenty more Elizabeths/Bookers/Comstocks playing out virtually the same sequence (and plenty of completely different sequence - as many different combinations as you care to look for ), including ones where Booker didnt die/drowned/whatever   (after all Booker is here again (Rapture) and wasnt HE supposed to be ended too??). Maybe this Booker has picked up memories  (another of the game's weirdness) about Sally/past as Comstock  from some other (of the infinite) Bookers who blew by sometime in the past (they aint tears, they are rips in the space time continuum and they are spreading geometrically, starting to REALLY mess stuff up...) and two Booker's coexistance in the same universe caused things to get a bit wonky(er).

Maybe this isnt the same Elizabeth either. According to the 'theory' an infinite number of Elizabeths went thru pretty much EXACTLY what the one in the BSInfinite storyline did with similar thoughts and now motives and goals  (though no brighter than that one is, as the Luteces are the actual source of all this badness, and she shouldnt be wasting her time punishing potentially innocent Bookers everywhere).

You keep unwinding the knot and all you have is a bigger knot with this kind of thing.