What It’s Like Being a Vampire

　　 Chapter 49: Science Evidence

However, the girl seemed to be a little afraid of life and shy, and did not respond to Xiang Kun. Professor Li explained on her behalf: "She explained to me before. Actually, there is no fixed way to distinguish between birds. Even the same kind of birds may be different. The difference depends on the surrounding situation at the time. If there are multiple birds calling, they need to be compared with each other to make a reference judgment. After all, it is actually to judge emotions by sound. But I tried as she said Many times, I can’t hear anything. I think she can hear better, and the more details and the wider frequency range are also related to her..."

　　 After chatting on this topic for a while, "Little Apple" didn't seem to be so afraid of life, and participated in their discussion.

　　 Li Yang said that his daughter's hearing ability is better than ordinary people, and he can hear more details, so it is difficult for him to learn. But this question does not exist for Xiang Kun. He is sure that his hearing is much stronger than this girl.

After communicating directly with the girl for a while, he also grasped some tips for distinguishing bird language, and he also compared various bird calls he had heard in the mountains during this time to determine what the girl said. is useful.

　　 But if you want to master it and be able to apply it in practice, you still have to have practical exploration and training.

While chatting, Xiang Kun learned that Li Yang, an associate professor, actually belongs to the School of Life Sciences. His main research field is "the relationship between the complex microbial communities with important functions in natural and artificial environments." From the perspective of mastering the metabolic characteristics, try to cultivate and isolate the uncultivated microbial groups with important functions and application values.

　　 Although Xiang Kun has slurred a lot of books on biology, medicine, cells, and genes some time ago, when Li Yang really talked about a professional place, he was still a little confused, and he could only ask for advice as a student.

　　 Xiangkun has always hoped to consult professionals about his own situation. Professor Li Yang's professional fields and knowledge reserves should be regarded as "professionals".

　　 Of course, he would not tell Li Yang directly about his situation, but slowly led the topic, lean in the direction of mutation and gene mutation.

　　 "...Professor Li, do you think it is possible for birds to mutate due to some reasons, and their body size will become three or four times, or even five or six times larger?"

　　 "Are you talking about individuals, or the whole group?"

　　 "Individuals, such as a certain owl... or a vulture."

"It's almost impossible. You have to know that if the body size becomes three or four times larger, the weight may increase more than ten times, and the bones and muscles cannot bear it." Li Yang shook his head: "Even if it appears, that kind of individual will not survive. Go on. Unless its entire body structure and tissue strength are remodeled, the mutations that occur in the individual will not be so orderly and stable."

"...Professor Li, do you think it is possible for a person to mutate due to some reasons, such as the digestive system, and then the way of energy intake changes, and other organs and tissues of the whole person also change accordingly, and the body functions are improved... "

　　 "You don't mean to say that you have superpowers after mutation, do you?" Li Yang couldn't help but smile, "We often use one sentence to express the characteristics of gene mutation: generally low random frequency, more harm than good, and no orientation."

Li Yang went on to explain: "That is to say, genetic mutations are common in the biological world. They can occur at any stage and in any part of the individual development of organisms. They are random and the mutation frequency is very low. Moreover, for individuals, mutations are generally common. They are all harmful and have very few advantages. As for non-directionality, it means that more than one allele can be produced...

"... The human body is a sophisticated, complex, stable and orderly system. Any change may bring bad consequences. The usual external manifestations are illness or deformity. To brother, you are a programmer, you say If a large program with sophisticated design and complexity, such as an operating system, if there is a bug, is the bug good or bad?"

　　 Xiang Kun thought for a while, and said: "BUGs are definitely bad for programmers or administrators and need to be fixed. But sometimes for users, BUGs may also bring benefits..."

Li Yang nodded: "Look, that's it. In most cases, it is a disadvantage. Sometimes in some special cases, a few will bring benefits, but there is a risk of overall collapse. Variation is the same, if it is only a small variation. It may have little impact on the entire human body, or it will bring certain benefits and conveniences. For example, lactose tolerance mutations, so that adults can also secrete lactase degrading enzymes, and can enjoy dairy products better and more assured. But if Mutation has a great impact, and the benefits and disadvantages that it brings are not worth mentioning. There may even be a domino effect, causing the entire human system to collapse, and even death...

　　 "...In the future, it may be possible for humans to be genetically modified to give birth to superhuman beings, but now... it is basically impossible for superheroes in movies and comics to appear by accidental mutation.

　　 Actually what Li Yang said, Xiang Kun had read a lot of books on biology and genes, and he knew it. It was just because of what happened to him and the giant owl that he couldn't fully believe in the textbook.

"Professor Li, do you think there is such a possibility? There are actually a set of mature mutation mechanisms in nature, but they have been hidden... hidden in the body of some humans or other organisms, and will not be triggered until certain conditions are met? "

Li Yang shook his head: "You are already in a category similar to mysticism. For literary works, novels, movies, etc., the settings can be edited directly, and logically speaking will do. But science is about evidence. Without evidence, you can't make inferences out of thin air ."

　　 Xiang Kun asked again: "What does Professor Li think of vampires?"

"If you ask me about rabies or porphyria, I can talk about it. After all, there are cases, pathological studies, and various documents. But vampires and zombies are essentially the same as superheroes. The existence of works, legends and myths, there is no actual evidence to prove that they have appeared in reality. Therefore, we can only talk about it from the perspective of literature and art, but not from the perspective of science... Well, "Interview with the Vampire" and "Scary Love" "Four Hundred Years" I prefer..." Li Yang laughed.

　　 Xiangkun wanted to turn around and grabbed Li Yang's collar in the back seat, and said to him loudly: Lao Tzu is a vampire, Lao Tzu is the ready evidence!

　　 Just thinking about it, he will definitely not reveal his secrets to the first time people.

　　 Actually, they had already arrived at the foot of the mountain, but Li Sheng saw that the three of them had a lively discussion-in fact, it was mainly Xiang Kun and Li Yang. So they simply drove Xiangkun to the station in the city, anyway, they had to go back to the city. This way, you can just continue to chat.

　　 After arriving at the station, Xiang Kun, Li Yang, Li Sheng, and Xiaoping both left WeChat with each other, and then got off the train to say goodbye.

Seeing Xiang Kun walking into the ticket hall from the back, Li Yang in the car shook his head and sighed, "I didn't expect this brother Xiang, who is 30 years old, and he is so obsessed with superheroes. By the way, Little Apple, what you said before What's the name? What's the second?"

　　 "Secondary Two." Little Apple said and shook his head: "Uncle Xiang is not called Secondary Two. He seems to want to hear from his father to help him explain the theories of superheroes and vampires."

　　 "How can this be..." Li Yang smiled.

　　 While driving, Li Sheng suddenly said: "Brother Xiang Xiang's feet are dirty." After a pause, he added: "Very dirty. UU Reading www.uukanshu.com"

"Huh?" Li Yang frowned in confusion. Because of speculation on the road, Li Sheng gave Xiang Kun the pair of slippers he was wearing. Li Sheng said this, definitely not disgusting Xiang Kun's dirty feet, but expressing other things. meaning.

　　 Li Yang thought for a while, and then understood: "You mean, you walked a long distance barefoot to brother?"

Li Sheng nodded: "The thick layer of hard mud on his feet must have not come out on the winding mountain road. He must have walked a long distance in the mountains. And I watched him while he was washing his feet. When he arrives, there are no wounds on his feet. This shows that he walks very skillfully and knows how to avoid obstacles that can hurt his feet. I suspect that he deliberately entered the mountain barefoot and didn't wear shoes at all."

　　 "Intentionally not wearing shoes? Why is this?" Li Yang asked.

　　 "Maybe he is really an ascetic monk, tsk, if he wears a monk robe, I really think he is a monk with real skills." Li Sheng said, he laughed.

　　 Li Yang shook his head: "Isn't he a programmer, don't talk nonsense about any monk, he said it himself, bald head is because of hair loss..."

　　 At this time, the little apple next to him suddenly said: "Uncle Xiang has nothing to taste."

　　 These words made both of them stunned. After two o'clock in the afternoon, such a big sun, such a hot day, let alone walking on the mountain road, even standing still for ten minutes, they would sweat profusely.

　　 But now, when I think about it, Xiang Kun seemed to be very dry, and he didn't see any sweat at all. Even if the sweat dries out later, there must be a residual sour odor from the previous sweat. Both of them knew very well that not only did Little Apple have sharper ears than others, but also had the same sense of smell. She even said that she didn't smell much, so she must have not sweated much.

　　 Li Sheng smiled and shook his head: "Brother Xiang, this is a bit interesting."