
Originally Posted by
WellGramarye
If Graha does not go back in time, and the events of Shadowbringers never happen, we live within the 8UC timeline, in which WE DIE. If we die at that point in time (the end of Stormblood) we are not ALIVE to go back in time to warn Venat and have our adventures in Elpis.
The time loop in Shadowbringers does not require our 8UC counterpart to travel back to Elpis, because the events in Elpis sit outside of the span of time altered by G'raha's actions.
All that matters in the 8UC timeline is that the Sundering happened in the past.
The end result of Shadowbringers is that the 8UC timeline is bypassed and the Elpis time loop continues along the "new" timeline that, from a whole-of-time viewpoint, has always existed alongside the 8UC timeline. If you are tracing this timeline, there is never a point where we die in the calamity, and this not-dying version of our timeline leads onward to Endwalker and our trip to Elpis.
G'raha's actions are necessary to create the path, but the result is that there is never a time where the path is not there.
There was only one WoL who travelled to Elpis, and it was always only us.

Originally Posted by
WellGramarye
Graha's jump to the past is 300 years into the future after Stormblood. When he went back in time, he went to a pre-merged world and it landed him 100 years in the past (from Stormblood) on the First.
Partly correct, but only from G'raha's personal experience.
From memory, the stated time that G'raha was awoken in the future was 200 years forward, and in travelling back in time (and across to the First) he arrived shortly after the Flood of Light occurred. In the First, that was about a hundred years before we arrived there, but then you have time variation on top of that.
From the events of post-Heavensward we know exactly when the Flood was happening in Norvrandt, because it was the time when the Warriors of Darkness came to the Source. Not a hundred years ago, but probably less than a year before the events of Shadowbringers occur by our perspective.

Originally Posted by
RyuDragnier
Because Graha's time travel does not run on the same rules as normal time travel. Normal time travel sends you back on a linear time scale. Graha's also mixed space into the mix. Instead of just going back in time on the Source, which would have been a case of "can't change the past," he crossed space as well as time onto the First, a place where he doesn't/shouldn't exist. This breaks outside of the normal rules of time travel, which allowed him to change how things occurred. We could get into the nitty gritty about how that works (let's not for our own sakes) considering the Sundering first needed to take place, but it's going to be quite a few paradoxes.
I don't believe the jump between shards had anything to do with how time travel works any why he successfully altered events.
My theory is that what made the difference is that he is trying to change a specific historical event. He knows exactly how it happened and when it happened and why. By altering circumstances so it is impossible for that known event to take place, he creates a situation that cannot lead to the future he travelled from, and so a second branch of time forms to house this altered situation.
By contrast, we can't do anything in Elpis because we have no idea of the specifics, so there's nothing we can do to create a similar contradiction.

Originally Posted by
WellGramarye
First point, this doesn't contradict what I said, nor does it make what I said wrong. He was saying we could not stop the calamity, that it was always fated to happen, but we still changed things by going back in time.
We
became part of events by going back in time, but that isn't the same thing as changing them. There still only needs to be one version of events at Elpis.