[Spoiler Alert1] Bioshock infinite - help me understand!

[Shonubi]

Hello guys/girls! I've just finished bioshock infinite and now I see why it is called "infinite"but that is all my simple mind can understand... can someone please explain me (hopefully in details) what exactly just happened? My mind can't function properly after being r**ed over that ending....

[Remilia]

Please use this thread.
http://www.mmo-champion.com/threads/...shock-Infinite
For spoilers, please use the spoiler bbcode.

[spoiler]This is a spoiler, don't click me cause spoiler[/spoiler]
Which becomes
This is a spoiler, don't click me cause spoiler