User blog comment:Mr. Youtube/Columbia and Rapture/@comment-158.130.223.195-20130426190558/@comment-96.42.71.33-20130811073928

Didn't one of the Voxophones even say that Fink saw a mash up of machine and man and how this would be a great idea for Elizabeth's tower? That could have been the Big Daddy. I think that Rapture, Columbia, and whatever other cities there are all exist at the same time but in different universes. I think that Booker getting babtized in different universes after differing battles prompted him to take different names and create different cities. Reading Bioshock: Rapture, Ryan escaped Russia, When he came to America he could've been babtized and christened and thus was his world's version of Columbia came to be.