
Originally Posted by
Raven2014
That's why I said either or. Both version have been know to used before in other work, it's just usually a setting will pick and stick with one version instead of multiple. But hey it's fiction, there is no rule saying you have to stick with one. G'ahara didn't change the past, he "splits" it. In his original time line, the flood of light still happened, the WoL is still death, and Eorza is still messed up. It's just due to the effort of coming together and finish the tower project, people find new source of hope and inspiration to move forward. In both case, neither of us managed to change our past.
That's why I also said even if people argue that the WoL and Venat should have tried to done more to save the ancient, at best we can split another timeline where the Ancient survive, but that will do nothing for the Ancient of our time line. In this universe it seems the law of causal paradox is pretty much absolute, it's just the writers also allow the concept of multi-verse so we can explore different possibility, but so far no one have manage to circumvent the actual time paradox in the same universe.
Another of my theory (based on some other works) for the difference is that G'ahara time travel was more complete. He was sent back in a "literal" time machine as a whole package and able to insert himself as a proper entity in the new timeline, and thus granted permission to change it. Think about as if the time mechanism has an authentication process that will only allow entity it recognize as the "original" to impact change upon it, and G'ahara passed that authentication. Whether in our case, Elidiburg only hastily send a "mirage" of the WoL to the past meant to only be able to observe, that's how we arrived at Elpis. Only thanks to Emer-Setch that our mirage was solidified and thus give us some mean of interaction, but that's probably not enough to pass the time mechanism's authentication process. Thus we were never recognized as a proper original entity in the time line and do no possess the ability to dictate its course.