Stanford is a city in southwestern Connecticut, United States. On the Long Island Strait, 58 kilometers northeast of New York City. It is a satellite city of New York. It has a population of more than 100,000 people. Development began in 1840 after the construction of the railway. There are many industries such as chemicals, electronics, cosmetics, rubber, pharmaceuticals, etc. It is well-known for the study of chemical, electronic, pharmaceutical, optical and other aspects of laboratory equipment.

At 7 o'clock in the morning, the sky was not even bright, the air was still filled with the remnants of last night's lights, the streets were empty, there were hardly pedestrians, and only a few cars drove by with their near-lights on occasionally.

Stanford University is located in the northwest of Silicon Valley, near Palo Alto. Stanford University was founded in 1891 by railroad tycoon Leland Stanford, then governor and senator of California, and his wife, Jane Lessrop Stanford. The University honored their son, Leland Stanford Jr., who died of typhoid fever on the eve of his sixteenth birthday (1884).

On Stamford Street, there are not many pedestrians on the street, only the 24-hour hotel and supermarket are occasionally entered. In an alley to the north, Yang Xiaochen's figure was slowly revealed, and at this time his appearance had become a young Caucasian man with a high nose, concave eyes, and thick pores, with short yellow hair and a gray casual shirt common in Stanford.

The alley was chosen because there are no electronic cameras here. Yang Xiaochen walked out of the alley, turned the corner to the right, walked about three hundred meters along the road, and came to a house with a small open garden.

After about a minute, the door opened, and an elderly man in his fifties with gray hair and a medium-sized Caucasian standing in the doorway, with a beard on his chin and cheeks that was obviously not well groomed and looked a little messy. The old man looked at Yang Xiaochen with surprise in his eyes: "Oh, David, I'm so glad to see you again!"

Yang Xiaochen hugged the old man with his outstretched arms with a smile, and after letting go, Yang Xiaochen said with a smile: "I'm sorry, Professor Tryon, I hope I didn't disturb you so early." ”

Professor Tryon, who was dressed in his pajamas, was very happy: "David, you know, I wake up very early every day. You're here, just in time for breakfast together, come in, David!"

Yang Xiaochen shrugged his shoulders and walked into the room with Professor Tryon, he saw Professor Tryon happily walking a few steps, pretending to hold a book and lie on the sofa to read. Yang Xiaochen consciously walked into the kitchen and started to make breakfast.

It wasn't the first time he had come, and he knew why Professor Tryon was not only not afraid of being disturbed, but was glad of his arrival, because he could finally eat breakfast without having to do anything, and what could be happier than lying on the couch and being able to eat?

Soon breakfast was served on the table, in fact, it was not complicated, it was the bread baked in the bread machine, the heated cooked beef slices from the refrigerator, and a glass of heated bagged milk.

Professor Tryon sat down at the table very consciously, as for brushing his teeth and washing his face or something, for a man who lives alone, is it still important to be in front of breakfast?

Yang Xiaochen ate quickly, he came here for something, but he didn't come here specifically for breakfast. Professor Tryon also eats quickly, because it doesn't matter what you eat, it's important that you don't have to wash the dishes after eating.

Looking at Professor Tryon who wiped his mouth and walked happily to the study, Yang Xiaochen smiled helplessly, took the tableware to the kitchen and washed it, and then walked into the professor's study.

Professor Tryon was flipping through a stack of papers on his desk, while a strand of DNA sequences was displayed on the LCD computer screen next to him. Seeing Yang Xiaochen come in and sit on the chair next to him, he nodded: "David, I'm going to be busy, you can go back if you don't have anything to do!", dare to love this old man and think that Yang Xiaochen came to be China's Lei Feng this morning.

Yang Xiaochen smiled helplessly: "Professor Tryan, I have something that I need your help with." ”

Professor Tryon finally "paid attention" to Yang Xiaochen, put down the paper, and was a little puzzled, it seemed that he had nothing to help David, should he make his own lunch? Oh God, this must not be allowed!

Yang Xiaochen understood his doubts: "Professor Tryon, I want to ask some biological questions this time. ”

Professor Tryon understood, "Oh, David, you're interested in biology too?" Okay, I'll try to answer that for you. ”

Yang Xiaochen organized the logic of the language, and then asked: "Professor Tryan, in terms of cloning technology, cloning life, such as humans," Yang Xiaochen paused, and saw that Professor Tryon had no unusual expressions and actions, so he continued: "Is it possible to clone an identical person? I mean including knowledge, personality and memory?"

Professor Tryon showed an interested expression, leaned forward slightly, and waved his right hand: "Dear David, although cloning humans, well, in fact, which damn businessmen have already done this!", Seeing Yang Xiaochen's surprised expression, Professor Tryon was a little dumbfounded: "They call it surrogacy, oh, of course, there is a difference between it and cloned cows and sheep, but damn it, they only need to modify a few steps, and they can clone humans like cloned cows and sheep." ”

Yang Xiaochen knew that he had to listen to the details of the cloning technology if he continued like this, and before rushing back to the laboratory, he only had 5 hours: "So, Professor Tryon, can the human cloned in this way have the same knowledge, personality and memory as the original?"

Professor Tryon shook his head and said "no, no", "It's impossible, David, you know, DNA transmits only genetic code, not memory. Certain genes, such as the D4DR gene on chromosome 11, have some effect on personality, but this is by no means to say that cloning can completely replicate a person's personality. ”

"What about knowledge and memory, can it be copied into a clone like in some science fiction movies?", Yang Xiaochen continued to ask.

Professor Tryon hesitated, "Although the current technology can't do this, maybe it will be possible in the future." David, you know, I'm not a neuroscientist. ”

"So, do clones have self-awareness?", Yang Xiaochen asked an important question.

Professor Tryon's expression became a little serious, and the old man who was like a child and was waiting for breakfast finally showed the bearing of a professional scholar: "Although I am not an expert in brain neuroscience, from a biological point of view, life has evolved from simple cell organization to complex advanced life forms, and self-consciousness has also evolved from simple to complex self-identification. ”

"In fact, what is self-consciousness? Neither biologically nor neurologically can be explained by one explanation. For example, the human brain has 14 billion neurons, perhaps more, so who is responsible for their distribution and cooperation?

"Molecular biology is a phenomenon in the genetic code of DNA called 'synonymous mutations,' oh David, you can think of it as a 'synonym' change, and now research shows that it's a natural selection of the human body to avoid functional changes. What, then, dictates that most human bodies adopt natural selection in the same way?"

"Professor, do you think that God created life?", Yang Xiaochen used the Western word "god". Unlike many gods in the East, Christianity in the West is the only God, at least after the fall of ancient Greece, and the word god represents the only God.

Professor Tryon spread his hands, a little helpless: "No, I don't know, every time we have new research progress, new doubts will arise. For example, why did humans evolve to choose five fingers instead of four? Practically, four fingers are enough for us. Why didn't synonymous mutations allow DNA mutations for four fingers to become mainstream?"

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