The general plot of the story is as follows: Ryotaro Okabe, a first-year student at Tokyo Denki University who can't change his secondary school illness, and his friends repeat the development of strange inventions all day long.

On July 28, 2010, Okabe went to the lecture hall with his friend Hashida in order to get credits, where they met Makise Korisu, a genius girl who had successfully published a paper in an American scientific journal at the age of 18.

However, the strange thing is that Okabe had just witnessed Makise fainting in a pool of blood on the 8th floor of the RADIO Kaikan just a few hours ago. What's even more puzzling is that all of this was clearly recorded in the text message sent to Hashida a week ago.

Eventually, Okabe found out that one of the invention devices they had invented had the function of sending text messages to the past by accident, that is, it had the function of a time machine.

At this time, Okabe never even thought that this accidental invention would become the key to the future of the world, and the great invention of the century was born......

In the previous life, this work was evaluated by many people as a masterpiece, but there are also many people who feel unclear about it.

But whether you can understand it or not, whether you can watch it or not, everyone must have been amazed by the "worldline tightening theory" that this game popularized to many players.

Just like Jiang Yu had always heard of the name of "The Three-Body Problem" in his previous life, he had also heard of the "Law of the Dark Forest". But it wasn't until Jiang Yu finished watching "The Three-Body Problem" that his excited heart still couldn't calm down for a long time.

The so-called "world-line convergence theory" means that the world-line leads to a common outcome.

A world, with an infinite number of possible branches (worldlines), treats the world system in the SG world as the quantum entangled state of the quantum system, which is referred to here as the worldline entangled state.

The myriad possible worldlines are entangled to form the worldline range, and the myriad worldline ranges form a larger worldline range, similar to a spindle-shaped structure like 1-2-4-8-16-32-16-8-4-2-1.

As for the specific state of representation of the world in the entangled state, it is up to the observer to decide.

It should be noted that because of the existence of "observers", the different worldlines in SG are in a state of construction-collapse-reconstruction, that is, a single cosmology, not a parallel cosmology.

This is also the question that Makise avoids in the chapter "The Dissolution of the Law of Cause and Effect" in order to make the male protagonist decide to give up on himself. She won't live in another parallel world. Because in the observation of this world line, the fierce cognition of Phoenix Temple, Maise Hongriqi has died. This is also an extremely tragic choice.

This single universe is a quantum superposition similar to particles, with "infinite possibilities".

Here is a mention of the classic Copenhagen interpretation of "Schrödinger's cat". Observation determines whether a cat lives or dies, and the cat will always be in a superposition of life and death until the observation. Because we don't know the future, the outcome of the cat's life and death will definitely be over.

Because of the presence of observers, there is only one deterministic outcome for an event, but the outcome depends on the observation. There are countless possibilities for the same event to be superimposed, but there is only one that results in a definitive outcome.

Put simply, if you are being observed, the observer knows that you will die, but he is trying to avoid the outcome of your death.

If you avoid the suddenly falling rebar, the laws of nature will interfere, and the next time you may die from contact with the leaking current.

It's a bit of a grim reaper, but it's detached from the supernatural, and the whole theory is based on a mixture of relativity, quantum mechanics, and M-theory.

It's like in the game, in order to avoid the death of Shiina Mayuri, Rentaro Okabe keeps traveling back in time through a time machine, trying to save Shiina Mayuri and change the outcome of her death.

However, Rentaro Okabe is constantly doing useless work, no matter how many times he goes back to the past, in his cognition and the cognition of the world, in this world line, the death of Shiina Mayuri is inevitable.

And the great thing about "Gate of Destiny Stone" is that it does not throw this theory to you at the beginning, but players gradually come to this conclusion with the fierce perspective of Phoenix Temple, and in the killing of Shiina Mayuri again and again, adding more to the meaning of decryption.

So when we follow the fierce perspective of Phoenix Temple, how many times have we witnessed the killing of Shiina Mayuri, how many times have we returned to the past, and witnessed the "failure", "failure" and "failure" written all over the page by the migrant soldiers, sacrificing Ryukako's desire to become a woman, sacrificing Phyllis's desire to be with her father, and finally even sacrificing the life of Makise Red Risu, in exchange for Shiina Mayuri's rebirth.

And in the end, in the sentence "It's okay, Kookabe can cry for himself" in the fierce and crazy declaration of victory and Mayuri, the sadness is really indescribable.

However, sacrifice does not lead to ultimate victory, and this is where the sacrifice ending given in the game script is sad.

The sacrifice of truth leads to the world being controlled by SERN and the formation of a pseudo-utopia; The sacrifice of Makise Red Risu, due to the development of the time machine, led to an arms race, which led to the outbreak of a world war, resulting in the death of most of humanity.

Therefore, in the end, the Phoenix Temple began to search for the real "Gate of Destiny Stone" world line, that is, the world line where Shiina Mayuri and Maise Red Risu both survived.

And the process of searching is also quite intriguing, and there is even a reminder of the future Okabe Rintaro in "The World Line of the Death of Makise Red Risu" to his past self.

"Don't change the past of Makise Red Risu's 'death' and save her." , to "deceive the past self", "do not change the past fait accompli, go to change the result!" ”。

And these are more or less secretly consistent with today's quantum mechanics, like "Schrödinger's cat", the subjective image of the observer and the objective state of the observed seem to have some special relationship, and the two are not independent of each other.

According to the summary of the worldline restraint theory in "The Gate of Destiny Stone":

"First of all, the Convergence will be initiated only after an important point of divergence has been accomplished in order to achieve the necessary future."

"Secondly, the world will hinder all actions that affect the outcome, and this is the end of the world line. Events that are "results" are bound to happen."

"Again, the law of cause and effect determines the priority of closure."

"In the end, there is no limit to the form of restraint, this is the law of nature (God), and all triggering events within the law will interfere with restraint."

In the world line of "Gate of the Stone of Destiny", the established fact that Makise is "alive" contradicts Rentaro Okabe's image of his "death", and here the former takes precedence over the latter.

In the world line of Rentaro Okabe's reflection of Makise's "death", Mayuri Shiina gives Rentaro Okabe, the observer, the image of "survival".

In this way, according to the theory of the future Rentaro Okabe, the current Rentaro Okabe has successfully entered the real "Gate of the Destiny Stone" world where both Shiina Mayuri and Makise Kori Rysui survive.

Of course, this is just a series of explanations based on the game GS, and in the real world, the "worldline constraint theory" still cannot be proven or falsified.

In the world where Jiang Yu is now, the theory of parallel universes is still popular, and although the "worldline convergence theory" has also been proposed, people have not paid much attention to it.

Jiang Yu believes that "The Gate of Destiny Stone" is a hard sci-fi game, even if it puts aside the common elements of traditional galgames - such as harem, cat maid, pseudo-mother, tsundere poor breasts, big-breasted sisters, friends' daughters, **fat house (??? It must also be like a thunderclap in the gaming world that seems to be caught in a strange circle today.

What's more, putting on this coat and launching it as a galgame, in addition to the text being able to give more explanations and a smaller workload (this is the main thing~), it can attract the attention of otaku who usually don't pay attention to this information at all.

And for some veteran otaku for the promotion of a favorite work...... An Yilun also said that he had something to say.