Just talk about personal opinions and what you have seen and heard, and don't make personal attacks on anyone.

First of all, let's talk about what a "pit" is. The "pit" of biochemical recycled materials mainly refers to poor employment and poor employment environment (after all, employment is the biggest livelihood), and of course there are some other reasons. Taking materials as an example, I summarize the "pit" into five attributes: zero, dullness, involution, danger and distance.

Zero: After graduation, your professional knowledge is zero.

I think zeroing mainly refers to two aspects.

The first point refers to the attributes of specialized courses. Take the material major as an example. It is an engineering liberal arts. I'll give you a list of the specialized courses in the third year of material specialty: material physics, material chemistry, inorganic non-engineering, introduction to materials, chemical engineering principles, powder engineering, fine ceramic materials, thermal foundation and equipment, material synthesis, preparation and processing, and research methods of material science. Among these specialized courses, only the principles of chemical engineering and thermal energy engineering and equipment involve calculation, and other specialized courses have backups. Examination questions are nothing more than fill-in-the-blank questions, noun explanations, short answer questions and essay questions. As long as you recite some words on the paper the night before the exam, you won't fail in the exam, and you may even get a scholarship. But how much can you remember after a week? A little longer, how much will you remember after graduation Do you still remember the preparation process of cement? (I only remember grinding and burning) Do you remember bainite transformation? You won't remember, this is the zero of knowledge reserve.

The second point involves changing careers. I remember Frank Yang once said: It is useful to learn some laws of chemistry, but it is useless to learn laws and chemistry. When you transfer to other industries (even if you remember a lot of things), your professional knowledge has no effect on the industry you transfer to, that is, the skills you learn are not transferable. Take myself as an example. When I was a junior, I participated in a big innovation project and stayed in the laboratory for a while. During this period, I learned to tablet, burn the stove, use a ball mill, test the electrochemical performance of the battery, and draw with origin. When I want to switch to other industries, these skills will hardly help me. However, if you study computer (civil servants are popular), law, English, business and so on. The skills you have learned are fluid and will help you change careers. At this point, I also call it zero.

Boring: mainly refers to specialized courses, experimental reports and laboratories.

For a science and engineering student, it is boring to recite a lot of professional courses. This has already been said in Zero, so I won't say it. Let's start with the experimental report. For materials specialty, undergraduate experimental courses include chemical experiments (Ⅰ-Ⅱ-Ⅲ-Ⅳ), physical experiments (Ⅰ-Ⅱ), basic experiments of materials specialty and specialized experiments. Doing undergraduate experiments is not boring, but copying preview reports. Before doing the experiment, the teacher will check the preview, and he will take the words you copied in the experiment book as preview, but it doesn't matter whether you understand or not. Copying experimental books is extremely painful, and copying thousands of words before each experiment is also boring. Here's a short story. On one occasion, Wang Ji (a postgraduate political teacher) from Qi Hang Education came to our school to give a lecture. He said he had a doubt why students in our school wrote so fast in mock exams. At this time, there was laughter in the classroom, and everyone replied, "I practiced copying the experimental report."

Let's talk about the laboratory again, taking my great creative experience as an example. My creative topic is about asphalt, graphene and battery, which is a small part of my graduation thesis. The reason why I am tired of material experiments is mainly because it takes too long to cook (this is what my senior in the laboratory told me). He said that he tried all kinds of things in the laboratory, that is, the exhaustive method. At the same time, he also said that the experiment he did was not innovative and anyone could do it. Of course, this is a bit exaggerated). Time-consuming means that some steps in the experiment are time-consuming and need to wait, such as: ball milling for 8 hours, furnace burning for 4 hours, hand grinding for 2 hours (when grinding asphalt at that time, I almost collapsed, so I was really bored and could only grind while watching movies), acid cooking for 2 hours and so on. These steps have to be done step by step, which is very time-consuming.

Entrepreneurship: Universities have trained more graduates than society needs, which is the crux of the "pit".

The Ministry of Education has set up 13 disciplines, among which the first-class discipline 1 10, biochemistry and environmental materials are both first-class disciplines. With so many graduates coming out of school every year, does society really need so many researchers? Where will they go? No way, most people can only choose to go to graduate school. Most graduate students are drifting with the tide and have no idea about the purpose of graduate school. I don't know why I went to Rome. When I was a freshman and a sophomore, I heard the teachers and instructors of the school say, "The advanced study rate of materials major is high." I didn't analyze why the enrollment rate was high. All I know is: wow, most people want to pursue advanced studies and get a high degree. In fact, isn't the so-called "further study" forced out by the involution?

Another point about involution is the involution of university employment. I don't know much about this, so I won't say it.

Danger: Some experiments and some work of materials and chemical engineering specialty are very dangerous.

Personally, I have never experienced an experimental accident, and neither have my friends around me. My knowledge in this field comes from news reports and teachers. The first time I felt the danger of the experiment was when I heard that there was an explosion in the laboratory of Beijing Jiaotong University. The incident was quite sensational at that time, and the school also conducted laboratory safety education. The most serious accident I heard from the teacher was that she died of cancer caused by radiation (according to the teacher, it was a long time ago), and a girl was disfigured by the explosion of the reaction device. Other hazards in the laboratory are toxic gases. As far as I know, the polymer major is the easiest to take drugs.

In recent years, the successive explosions of chemical plants have made people feel scared. From Tianjin Port, which I first learned, to Chenjiagang Port, and then to Lianyungang a few days ago, one after another was shocking. Before my mother knew about the explosion in the chemical plant, she asked me, "Will you go to the chemical plant after graduation? It's too dangerous there. " I replied to my mother, "I study materials and don't have to go to a chemical plant." Compared with these accidents, cervical spondylosis sitting in front of the computer is nothing.

Remote: This refers to the poor employment environment.

I first realized this when I started my internship in my junior year. Almost all internship companies are suburban factories, including an auto parts factory producing toilets and a factory producing refractories in wuqing district, Tao Dong. When I visited these factories, I couldn't help thinking, "is this where I will work in two years?" Can I stand the roar of this machine? Can I stand the dust? Can I stand the high temperature near the stove? Will I become as dull as these technicians and workers? "

Senior year needs a production internship. I went to the cement plant in Yixian County, Baoding, Hebei Province, where the environment was even worse. The roar of the machine makes you unable to speak normally, and the heat wave of the cement furnace makes you unable to stay long. You can fry eggs on the concrete floor next to the cement stove. It's no exaggeration, because it rained that day, only the ground next to the cement stove was dry, and barefoot on it would burn your feet. There is a sign next to the canteen of the cement factory, which says noise. Put a question mark here. He told us the truth when chatting with the technician in the cement plant. He said, "Even some junior college students don't want to work here, not to mention your 2 1 1 school, so take the postgraduate entrance examination." On the one hand, they go to the office, on the other hand, they go to ZTE.

These are the places for school practice. Let's talk about undergraduate graduation. Let me give an example of my senior year. He is from my hometown (I contacted him to find out about the employment situation of my undergraduate course in my junior year). He graduated from a fire prevention company in Fangshan, Beijing. He said that he didn't live in the place arranged by the company, but rented his own house (the rent in the suburbs was cheap). Then I asked him about his undergraduate employment. He said, "Most of the students in the class have passed the postgraduate examination, and only about half of them directly work in this major." I thought, "I have only graduated for a year or two, and in a few years, there may be fewer people engaged in this major." This is the case with manufacturing, which is located in the suburbs.

In fact, there is one more thing-numbness. But it doesn't seem to be the specialty of biochemical recycled materials. I didn't put it in. Numbness means that students at school have not seriously thought about internship or employment at all. They stay comfortably at school and don't know the importance of internship and the seriousness of employment. Even many people may not have done internship seriously after graduation, especially in northern schools (I really have a terrible disease about the small semester, which is to keep students in school for three weeks, take some boring classes and do some experiments). Primary school accounts for one-third of summer vacation. Many people go home directly after the end of primary school. Where do they think of internship? In addition, as far as I know, most material graduate students have no internship opportunities, especially some teachers and scholars who want to evaluate their professional titles. They will not let you go out for internship. In this regard, you can take a look at the following link-tutor evaluation network, and look at some inside information of the laboratory.

Tutor evaluation network: https://mysupervisor.org/

A friend who studied materials in Zhihu asked me about my postgraduate entrance examination and employment. He is a 985 undergraduate. He told me, "all the students around him want to take the postgraduate entrance examination, and none of the seniors around him have internships." This also confirms numbness.

Although many people spit out materials, several people around me may be really interested in materials. They sit in the front row in almost every class, listen attentively in class and ask the teacher questions after class. These people may be really interested in scientific research. I wish these students all the best. I also learned that some teachers in the school really applied scientific research results to the industry, which really solved the problem and made great contributions to the country. I respect such teachers and professors.

As deserters from scientific research, I wish them all the best!

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