OK. i just beat the game and i have no fucking clue what just happened... maybe im simple minded or it could be due to the fact that i had to balance work/girl friend with playing the final hours of this game and had to break it up piece meal that i missed something somewhere. the parts im missing here is why was Elizabeth so important? why could she control the tears? why did comstock need her so much? it had to be more then just she came from another time line and he needed an heir. i kind of get that in one world booker renounced his sins and became comstock in another he didn't and stayed booker had a kid and so forth. maybe thats not important to the grand scheme of things but i feel like im missing the bow that ties this whole plot line together and i have nothing but a bunch of information out of context here.
also what was with picking the bird or the cage?