"Commissioner Ye?"

An abrupt voice came from the side.

Ye Ang turned his head and saw a professor in his fifties who had just gotten out of the car, looking at him with some uncertainty.

Ye Ang's image at this time is a little different from his in the laboratory, his hair is a little longer, and there is no way, so he got up this morning and cut it short by himself.

The girls didn't think there was anything about this hairstyle, but the professor didn't recognize him at once, so he was a little unsure.

"Are you?" Ye Ang was also a little unsure, after all, too much time had passed, "Old Yao?"

"Hahaha, sure enough, it's Commissioner Ye, I thought I was wrong. Professor Yao burst out laughing.

"Okay, you old Yao, I've never heard you say that you are SJ. Ye Ang also smiled.

Professor Yao shook his head, "In front of you, how can I have the face to say this." ”

"Isn't it humble, who have you been afraid of!" Professor Yao is one of the authorities on genetics in China, and he is also a friendly study partner of Ye Ang, who once worked in the same project team.

"Oh, I forgot to introduce it. Ye Ang introduced him to the four girls on the side, "This is my sister Zhao Yunlei, these three are her classmates, Liu Haiyi, Mei Qingqinxue, and Xu Manyun." ”

"Hello. Professor Yao said hello to them.

"Hello Professor Yao, I've heard your class. Liu Haiyi said.

"We've all listened to your public lectures. Mei Qingqinxue said, "The modification effect of a small number of genetic materials you talked about is vivid and vivid, which impresses us very much." ”

After all, it's a high-achieving student of SJ University, and it's really a bit level.

"Haha, if you have time, you can just come and listen to my lessons. Lao Yao smiled, his face was pale, and he warned a little seriously: "But don't play with your mobile phone, otherwise I will see it, and it will be useless to find your brother." ”

"Don't worry, Professor, we're all very well-behaved. Zhao Yunlei said very seriously. "But you have too few lessons. ”

Lao Yao's face was embarrassed, he ran the laboratory diligently, and he really didn't have many classes.

Ye Ang helped him out of the siege.

"Alright then, Lao Yao, we won't bother you. ”

I didn't want Lao Yao to grab it, "What, you're just here to play, aren't you here to take class?"

"Class?" Ye Ang looked dazed, what class was he taking?

"Old Yao, you want to give a lecture, then I can go and listen." Yeon said uncertainly.

Lao Yao shook his head, "No, no, why bother you to listen to my lecture." ”

He lowered his voice a little and said, "It was Commissioner Jian who gave a lecture, and it took a lot of effort from the courtyard to invite him?"

Jane Commissioner?

Commissioner Jian, who can make Lao Yao so solemn, should be Jian Xiu.

Ye Ang didn't say a word, "Let's go, hurry up, what if it's too late, what if there is no place?"

"Then," Lao Yao looked at the four girls, "what about them?"

"Let's go too!" the four girls said in unison.

They were too curious, at first the other three girls just thought that Zhao Yunlei's brother was so handsome, but they didn't expect that in a blink of an eye, the handsome guy actually chatted with Professor Yao, from their conversation, the girls vaguely knew that Ye Ang was also a big scholar, and now it seems that Ye Ang heard that there was a lecture by Commissioner Jian, and they all left them directly, obviously, this Commissioner Jian is also an extremely powerful scholar boss, and they also want to listen to the class very much.

A group of six people, under the leadership of Lao Yao, ran directly to the lecture hall building.

When I arrived at the classroom, I saw that it was okay, there were not many people, and the front row was full of professor-level figures, Ye Ang asked Lao Yao to sit in the front by himself, and he took the four girls to sit down in the fourth row.

Zhao Yunlei and Liu Haiyi sat on his left hand, and Mei Qingqin Xue and Xu Manyun sat on his right.

"Brother Ye Ang, do you know this Commissioner Jane?" Zhao Yunlei asked curiously.

Ye Ang nodded, "Yes, it can be said that it is a colleague." ”

"Is he very powerful?" asked Mei Qingqin Xue.

"Very powerful!"

Ye Ang and the four girls chatted in a low voice, and all kinds of teachers, professors, doctoral students, and graduate students came to listen to the lectures.

After more than ten minutes, a large wave of students poured in.

"Who is coming to give a lecture, why is it so lively?"

"We didn't know what to do, but the professor recommended us to listen to it, so we followed......"

In less than fifteen minutes, the entire classroom was packed, and even the aisles were full of students.

After about five minutes, a neat, clean, well-looking, calm-looking, calm-eyed young man walked in, dressed in a casual suit, holding a black notebook and a pen, and walked up to the podium.

He didn't speak first, but scanned the crowd with his eyes, from left to right.

The crowd fell silent.

He glanced again, and the classroom was silent.

He continued to scan again, and all the people below were silent, and they all sat down, looking at him quietly.

He clicked on the multimedia, then turned his head and wrote his name on the blackboard with chalk.

Brief repair.

"Hello everyone, my name is Jian Xiu, and I am invited by Dean Dan to give a lecture. ”

"First of all, thank you for your cooperation, and I hope that during my lecture, you will keep the class quiet, as you are now, and of course, if the situation allows, you can do the same, for example, now, I ask you to smile. ”

Everyone laughed.

After a while, Jian Xiu waved his hand, and everyone stopped laughing.

"Okay, let's talk about the lecture process and content first, I will have three lectures, which are human development, scientific and technological development, and the prospect of human beings and technology. ”

"Today is mainly about human development. ”

Speaking of this, he glanced at the people in the classroom, "Everyone, could you please answer the question, what is the initial difference between humans and animals?"

This question is easy to answer, and many people have raised their hands one after another, and Jian Xiu ordered a student.

"The difference between humans and animals is that people use tools. "This student is straightforward and confident.

"Okay, please sit down. Jian Xiu then asked the others, "Do you agree with him?"

Many nodded.

Jian Xiu shook his head, "There is some truth to this point of view, but I don't completely agree with it. ”

"Let's first understand what is called a tool, what is a tool, tools refer to the tools that can facilitate people to complete their work, and the essence of tools is: instruments that replace the human body to complete work. It doesn't have to be made by man, but it must be that man is trying and able to use. Therefore, the core of the tool is the integration of human thinking and operation. Philosophers once believed that only humans could use tools, and therefore defined man as an animal capable of making and using tools, but facts and experiments have proved that not only humans, but also some other animals can use tools in this sense after a certain amount of training. ”

Therefore, we usually give a slightly narrower definition of tools, according to the core of tools is the integration of human thinking and operation, we believe that tools not only refer to the tools needed for work, but also can be regarded as means and all materials to achieve, complete or promote something. ”

"For example, if there is a wall that you climb with your hands and feet, your hands and feet can also be used as tools for you to complete the event. ”

"Cats can also crawl over them, so of course their claws are also tools, and there is no difference between humans and animals in this regard. ”

"Teacher, what do you think is the difference between humans and animals?" finally a student asked.