Greetings, Mister Principal: Game of the Gods

"Game?"

Almiya didn't quite understand, but she still sat across from Reiner. She had only been exposed to the rules of this card game, but had never actually played it.

"Don't worry, we will not use this original rule, but the rule I made."

Reiner shuffled the cards, put one card face up, put it in Emilia's hand, and put the other card on the table.

"Now we stipulate that if the cards on the table are the same color as the cards in your hand, then you win. If they are the opposite color, then I win."

Almiya nodded in understanding, and then at Reiner's instruction, she turned over the card in front of her, which was a red card.

Leiner also turned over the card in front of him. It was not a red card, but a black card.

This kind of card only has two colors, black and red, so the probability of Emilia winning should theoretically be 50%.

But Emiya lost seven times in a row.

Every time when Emiya turned over the cards in front of her, Reiner would always turn over the opposite color card, which made Emiya a little annoyed.

"Even if this is luck, it's too unreasonable!"

Almiya seemed to have been immersed in the game, forgetting that they were actually discussing academic issues.

"Well, let's change the method. If the colors are different, you win. If the colors are the same, I win."

Reiner smiled slightly and said nothing more.

Almiya thought for a while, and it seemed reasonable, so she nodded in agreement.

I saw Reiner dealing out two more cards. One of them, Amelia, turned over and it was a black card. Then, Reiner turned over the card in front of him, which was also a black card.

Almiya lost again.

Another seven times in a row, each time with cards of the same color, and Emilia lost again.

"This is not in line with common sense about magic at all. Reiner, you must be cheating!"

Almiya put down the card and accused Reiner.

"Haha, I am indeed cheating."

Reiner's answer made Emilia choke. How can any bookmaker admit that he cheated so easily?

"So, Emiya, can you see how I cheated?"

"Uh... did you determine the order of the cards beforehand when shuffling them?"

Alymiya was a little confused when she was asked this question, and hesitated for a moment before giving her answer.

"That's the problem."

Reiner smiled and continued.

"If each card in the game just now is regarded as a particle in the quantum system, and red and black are its spin states, then what we simulated previously is actually a manifestation of quantum entanglement ."

Seeing that Emilia didn't quite understand, he continued to explain.

"The phenomenon of quantum entanglement shows that when we know the state of one particle in a system composed of two entangled quantum particles, we can know the state of the other particle, just like in two games, When we know the color of one card, we can also know the color of the other card."

"So, in fact, no matter how you played just now, you lost..."

Almiya seemed to be still struggling with whether to win or lose the game, and said with some dissatisfaction.

"It can be understood this way. There is no doubt that I cheated in the game just now. This is also the view of the mages towards quantum entanglement. That is, there must be a magical element used to describe quantum entanglement. Quantum state, to put it simply, cheating should be included in the theory. We allow quantum entanglement to cheat, but quantum theory must make it clear how it cheats."

Reiner shrugged.

"Lord Braggs and Lord Alberton believe that the evil dealer has determined the order of the cards before the game starts. In other words, in the phenomenon of quantum entanglement, the states of the two particles have been determined from the beginning. , our observation is just observing something that has already happened."

The spin state of two particles has been determined at the moment of separation. This information is transmitted along with their separation. Therefore, observing the spin state of the particles is actually observing something that has already happened. Therefore, There is no limit to the speed of light, or in other words, the speed at which an observer obtains information is indeed below the speed of light.

This is a conclusion based on the general theory of relativity. From the perspective of people's common sense, this is more in line with common sense. Real determinism plays an important role in it.

"In this kind of speculation, the state of the particles is certain and has been determined from the beginning. The particles themselves are objectively existing things, and their spin states are also objectively real."

Reiner said with a slight sigh, and then looked at Emilia again.

"But there is another conjecture, another way of cheating."

He took out two cards, one red and one black, and covered the surface of the cards with magic power, immediately turning the two cards into the same red color.

"That is, the dealer actually drew two cards at random. Even he himself did not know what the colors of these two cards were, but he had a special way to change the colors the moment the cards were turned over. To win."

"How is this possible..."

Almiya blurted out subconsciously, but soon she noticed the problem.

Because this is exactly the wave function collapse in quantum theory and the embodiment of the observer effect.

"The moment ~IndoMTL.com~ when the cards are turned over is equivalent to the moment when the mages measure the particles. At this moment, the wave function of the quantum system collapses due to observation, and the state of the particles is determined, thus affecting the relationship between The state of another particle that is entangled with it, this is the process described in quantum theory."

Reiner said, placing two cards on the table, one black and one red.

"This is the collision between the classical magic system and the quantum magic system. What is hidden behind it is the existence or not of real determinism."

The classic magic system believes that the existence of matter is objective and real. Regardless of whether the observer exists or not, matter maintains its original state. Although the collapse of the wave function is caused by the observation behavior of the observer, the result of the collapse should be It was decided before, and it was not the observation that affected the result.

This can explain many problems when the speed of light remains constant, but it runs counter to quantum theory.

In the quantum magic system, observation is a very important behavior. The particle state of the quantum system is determined based on observation. This decision even exceeds the speed of light and violates the theory of causality.

"The problem faced by the mages now is which explanation is consistent with the facts, the determinism of objective reality or the elusive quantum theory."

Reiner helplessly spread his palms and said.

"Although I prefer the latter, specific experiments must be proposed to verify it."

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