"What?" After leaving the scrap parts recycling bin at the east end of town, Yuki became angry: "That old man! ”

The recycling bin for scrap parts is actually a ...... It's more of a "public facility" thing. If you have scrap parts that you can't use, you can stock them up here, and then if anyone is short of money for a while, you can come here to get a few parts and don't charge money.

The town also entrusts people who have lost their ability to work to come here to maintain the parts. These people either have lost their prosthetic body for labor and do not even have the credit to borrow money to buy them, or the biological brain damage is so severe that it affects their mobility.

They are responsible for storing the "barely usable" scrap metal with anti-rust oil and silicone.

It's just like Yuki's mother would store a pair of prosthetic hands for years, where a single part wouldn't be sent here without reaching the limit of metal fatigue.

But you don't need any great parts to go down the hill.

These parts are not for his own use, either. He had other uses.

But they were entangled in the unexpected.

An old man in charge of maintenance said to Xiangshan vigorously, "You are wide", and he pulled Xiangshan and did not let go. This makes it difficult for Xiang Shan to select parts well. In the end, Xiang Shan had to choose a few brand new parts from the parts he had just bought and hand them over to a few maintenance people.

The maintenance people just walked away happily with screws, diodes, and the like.

"Generally, you don't need money to come here for emergencies!"

"Alright, Yuki, that was originally a bit of unplanned redundancy for backup." Xiangshan stopped Yuki. He wasn't very angry. In his opinion, this is the same as "getting married to get happy", something good happened to him [at least everyone thinks it's a good thing], so that everyone can also share some joy, which is not too much.

It's just that the object has changed from a child to a few old men who are about to degenerate into young children.

The phrase "you are wide" even made him a little amused for a while.

"It seems that even in this day and age, people are still human......"

"What?" Yuki doesn't know why.

"People are really complicated, good is also him, evil is him, good is him and bad is also him - sometimes I am really worried, I have slept for too long, and now the people are no longer known to me...... Forget it, why am I telling you this? Xiang Shan shook his head.

To this day, human beings are still showing kindness and malice. That's good.

Of course, there is a little bit of "malice" as well. If you think about it, the attitude of Dr. Schultz when he asked him to go online...... Is it a temptation? In this era, what do people who refuse to use the Internet represent?

But it's not a big deal.

- Of course, this does not mean that he will forgive "real malice".

"When I think back to my own affairs just now, the impact is too great." Xiang Shan mentioned another thing: "Yuki, do you remember? I didn't think about coming forward at first, someone pushed me out. Did you see that person? Who was standing behind me at the time? ”

Although he wanted to stand up in the first place, and although the matter ended well, it did not mean that he would forgive the person who pushed him. This nature is not the same.

The people who pushed him at that time had the idea of killing him and put it into action.

Yuki slapped her face. Because the incident of Xiangshan's defeat of the warrior was so shocking that everyone forgot about it.

"I didn't see it." Yuki felt a little guilty, but there was still a bit of nervousness in his tone: "Xiangshan, what do you want to do...... What does a knight usually do at this time? ”

"I'll talk to you about this matter when I have a chance." Xiang Shan patted Yuki on the back: "Okay, good boy, let's go home now." ”

"Home?" Yuki was stunned: "What about you?" ”

"Naturally, I just do my thing." Xiang Shan said: "The next thing is not suitable for good children. You go home and sleep, and I'll tell you the results tomorrow. ”

"No!" Yuki knows that Xiangshan will definitely do what "chivalrous" does, where is he willing to go at this time?

Xiang Shan was chased several times, but Yuki was reluctant to go home. Xiang Shan finally sighed and said, "Forget it, I really plan to teach you something...... I'll take you there. But you're going to have to talk less and watch more later, understand? ”

Yuki nodded excitedly, and then asked strangely, "Xiangshan, don't you continue to tidy up your prosthetics?" ”

"No, you don't." Xiang Shan shook his head: "Although I do want to make a prosthetic body for myself as soon as possible, there are more important things. And this can only be done on the outskirts of town - if you want to come along, pick up the parts for me. ”

The two soon came to a secluded place, where they usually went to the garbage mountain, and no one would come at night.

The moonlight was exceptionally bright tonight. Xiang Shan adjusted the lens of his eyes, and suddenly found something amazing.

He saw a visible line on the moon, much like a scratch on the dough. At the same time, within the moon's halo, there was an extra thin line that was difficult to discern with the naked eye.

It was a very small ring.

Something happened on the moon that caused the entire landform of the moon to change, and even ripped a little material from the surface of the moon to form a star ring with a weak sense of existence.

"Today I finally have the leisure to look at the moon, but I didn't expect to see something amazing...... "Xiang Shan's voice couldn't understand Xiang Shan's complex emotions again: "I have a little doubt, whether I woke up after sleeping for many years, or directly traveled to a parallel world......"

Yuki sat on the ground, and a large pile of parts behind him made a clanging sound: "Xiangshan, no matter what you want to do, there is no need to go so far...... I'm tired......"

Xiangshan stopped and looked.

This location is far away from everything that looks like a signal base station, away from all places where there are possible cameras.

Very good.

Xiang Shan silently took the waste parts from Yuki's hand: "Yuki, remember what you see next, remember with your biological brain, and don't forget when you die!" ”

Xiang Shan put the gears on the transmission shaft, and then put several transmission shafts on the discarded bracket of a mechanical tool to form the basis of a mechanical structure. Then, the gears are engaged with each other, and the propeller shafts are staggered with each other.

Yuki's eyes widened: "Xiang Shan, Xiang Shan, what is this?" It's amazing......"

"Of course it's amazing." Xiang Shan stared intently at the instrument he was building, and the memories in his mind were constantly evoked.

He is familiar with the structure.

"What the hell is this? Can you beat the bad guys? ”

"Didn't I tell you? Look at it. Xiang Shan scolded: "If you want to learn my skills, you must remember this." ”

Yuki pouted: "I don't even know what this is......"

Xiang Shan's work stopped for a few seconds.

The man said solemnly: "Then, you remember." This structure is called a 'Turing machine'. ”

Yuki watched Muyama's labor.

Xiang Shan put those waste parts together into a simple machine that was extremely ugly. It has no energy component, it is geared, and friction will transfer kinetic energy from one gear to another...... It even has a joystick handle that acts as a power source.

Yuki scratched his head: "That's it...... What do you make me remember? ”

This thing was quite ugly and rudimentary, not to mention that in order to allow the gears to complete this last run, Xiangshan used all the lubricants sent by the old man of the caretaker. This makes this thing look black and disgusting.

Xiang Shan nodded, then turned the joystick with his hand.

The kinetic energy transmitted by the hand is transmitted to the whole machine through the gears to change direction and divert the flow.

The sound of metal snapping and colliding......

Xiang Shan muttered, "This is it." ”

"Xiang Shan......" Yuki pointed out embarrassedly: "It looks like scrap metal." ”

Xiang Shan raised his head, stared at Yuki, and said loudly, "The material that composes it is scrap iron, but its structure is not. You have to remember its name - Turing Machine! ”

The man's gaze fell on the machine again, and his tone changed to light: "It is the computer at the beginning of Hongmeng, the greatest product obtained by human beings in the process of studying mathematics, and the origin of all internal strength." ”

"'Internal strength'?"

"All the martial arts you've heard of, including the ones you saw at the Paralympics, and the ones I used with that dog, are just outer martial arts." Xiang Shan closed his eyes: "Of course, relatively, there is also the 'Inner Family Exercise'. ”

"Outer martial arts are special tactics that are sublimated from the art of war. The internal family practice is the product of the mutual improvement of intelligence and artificial intelligence. ”

"In ancient times, 'internal strength' was also called 'hacking technology'. But those primitive hackers can't use biological brains to intuitively manipulate code and computing resources like today's chivalrous people. They have to confront an output device called a 'screen' and then intervene in that world with an input device called a 'keyboard' - it's just a mortal level. The 'internal strength' of the chivalrous man is a hundred times more magical than that. It's just that from the root point, internal power is indeed the evolution of hacking technology. ”

The relationship between hacking technology and chivalrous internal skills is like the first single-celled organism in the primordial ocean, and the later higher creatures. Although the latter is mysterious and dazzling, it has always been developed on the basis of the former.

"All internal power is based on the power of computing machines, and all computers are derived from this great engineering structure......

There was a hint of fanaticism in Xiang Shan's tone.

Turing machine.

In 1920, David Hilbert, the world's greatest mathematician at that time, the leader of the Göttingen School, and the famous proposer of the "Twenty-Three Problems", launched a charge towards the origin of "mathematics". He proposed the idea of "meta-mathematics" – that is, "the mathematics of mathematics".

As long as you master metamathematics, you are equivalent to mastering all mathematics.

At the heart of metamathematics are three theses – completeness, consistency, and computability.

Completeness, all mathematical problems can be proved or falsified.

Consistency, all mathematical assertions, either true or untrue, there is no proof of contradiction that is both true and untrue.

Computability, all mathematical proofs, can be obtained through a feasible process and a finite number of operations.

As long as these three questions are answered, humans and machines can solve all mathematical problems - and the "ultimate answer" of mathematics is equivalent to falling into human hands.

All mathematicians around the world are crazy about these three problems.

And the Turing machine is an artifact that solves these three problems.

This is a structure full of "wisdom".

Yuki applauded. There are three points of coping in the applause, and there are also three points of sincerity: "But Xiangshan, this is the same as the 'internal strength' we are talking about...... What's the ...... to do with it"