Quote Originally Posted by slayerx View Post
Here's the thing though, what bothers me in THAT case, is that having multiple timelines generally BREAKS the possibility for Paradox's and time loops. Being able to alter the past and create a new timeline means that no one has to do anything, and there is no chance of breaking causality because anything that would cause a paradox would instead create a new timeline. Dealing with multiple timelines, is more like dealing with multiple dimensions that can interfere with each other. The original Kat lived in a timeline where annie died after she fell off the bridge, and that what led her to make the original bird, meet the Norns and mess with time to save Annie; this in turn created a timeline/universe we see where Annie never died. Original Kat did something in the past that did not happen in her own timeline. Our Kat shouldn't need to repeat what original Kat did because the "annie doesn't die" timeline already exists thanks to original kat

For instance, Kat is sending her bird into the past and is creating each and every instance of when the bird appeared in the story; however according to the Norns when kat herself visits the norns in order to do any of this is not always the same... so like timeline requires that these events with the birds are written in stone and Kat herself has to perform them, but the timeline does NOT require Kat to visit the norns at any specific time and place, and say or do the same things. It doesn't really quite add up
I just Re-read where Kat explains the bird, and I think I've got it.

Kat knows that if she does nothing, everything will be fine. Everything you said above applies - Annie survives in this timeline no matter what.

However.

The original Kat created the bird because she was so sad that she broke time in order to save Annie. If our Kat does not send the bird back, that will create another Kat who loses Annie. The loop goes infinitely, and every time Kat doesn't send the bird back another version of herself becomes incredibly sad. Another version of Annie dies.

Kat has to maintain the loop or create infinite suffering across the multi-verse. I'm not saying this is accurate, but it appears to be what Kat believes.