User blog comment:Pawn of Atlas/Important Discussion for Rapture Storyline page/@comment-1500935-20140403184252/@comment-6024608-20140418024056

Bisoshock Infinite (and etc...) an Infinity of Headaches

"a major headache; for example, did Elizabeth visit the same Rapture both times?"

As soon as the time travel thing comes in to play and with Elizabeth going back and forth more than once, you start turning/twisting the timelines into knots (as her earlier visit sends out its own explosion of 'possible' parallel universes, which makes it rather hard to say how she goes back to the 'same' reality on the second visit).