Quantum Time lock
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The timing that occurs at constant intervals for fixing the averages of events.
Our universe allows for countless possibilities and creates many parallels worlds and histories with different developments.
But as the life of the universe would be exhausted if this takes place without limit, certain worlds (routes) that have strayed from the strongest stable routes are culled to prevent energy from being needlessly expended.
The Moon Cell has come to the conclusion that the universe we perceive of, which should be unstable, is being stabilized across the present, past, and future by this culling process and by quantum time locks.
It would be easiest to picture this as cutting off unnecessary branches from the great tree of time which if left to its own devices would branch out infinitely, always leaving just the trunk.
The history which had been made into a time lock will be immovable to interference from the past and future, and events in time locks will not fluctuate no matter what.
Even if someone goes further back in the past than a time lock and tries to change history, history will be forcibly restored once it reaches the lock.
In a universe with quantum time locks, the outcome that is registered in an quantum time lock will not change.
A time traveler can only alter the process by which it happens.
For example, let's say the outcome of Britain being destroyed is fixed.
Even if someone travels back in time and succeeds in making Britain prosper, ending war, bringing happiness unto everyone, the moment history enters the time lock the outcome of Britain being destroyed will happen.
It might be possible to save some number of people, but the great motion of human history cannot be undone.
These are the quantum time locks, what are called the human order foundation in the world of magic.
If we turn what was said around, it could be possible to deny human history from its foundations by destroying a quantum time lock through some great feat, but even with that method the most that could be done is deny human history beyond the destroyed quantum time lock.
The ones who can determine the next coming quantum time lock are those living in the era. Past and future intervention cannot affect the quantum time lock.
Archimedes' objective in Extella was to create an outcome in which the Moon Cell was destroyed before the next quantum time lock and make a base world that would start from that precondition.
While it is normally not something that could happen, to do that Archimedes continued to shift across worlds.
If Archimedes were to completely shut down the Moon Cell before the setting of the next quantum time lock from his subjective perspective, he would achieve victory.
However, even if there were outcomes where Archimedes could have won he couldn't reach a route where the Moon Cell was completely shut down.
While he was occupied with that, the protagonist proved the route of a world that was average with the most potential to grow, and the quantum time lock was decided.
Archimedes' machinations went up in smoke.
Incidentally, quantum time lock A would be at the beginning of Extella where the protagonist entered the stone chamber of the titan with Archimedes and was split into multiple parts and quantum time lock B would be the True Nero route ending.
No matter what Archimedes does there, the outcome has already been decided.