Most people have this experience: the first time they hear their own voice in the recorder, it is completely different from the voice they hear. This experience makes us sigh, and even feel that our perception for a long time has been "fooled" by our brain. Interestingly, the idea of realizing that we have been fooled by our brain is also generated by our brain. We hear our own voice with a filter. Similarly, one's own opinions and ideas are often subjective. Exchanging opinions with others can provide more objective and comprehensive understanding and understanding. Communication in education and culture promotes the progress of oneself and others.

People with color weakness and color blindness will be shocked when they first contact the color blindness test chart and be shocked at their difference. "We can't prove to a color blind patient that grass is green, not red. But there are various ways to prove to him that he lacks a discrimination that most people have." [1] people with weak color or color blindness may realize their own shortcomings and limitations earlier than their peers, and regret because they touch the boundary of their ability. Regret itself is not a bad thing. Doctors save lives with kindness, but sometimes they can't do anything about some incurable diseases; Turning this regret into unwillingness and motivation, doctors have conquered the incurable diseases of the past again and again. Deficiencies and limitations are milestones in the limit of knowledge. Unwilling people push forward the boundary of knowledge through their efforts and broaden their understanding and understanding of the world. Of course, it is unwise for people with color weakness and color blindness to knock their vision limitations. They can use scientific and technological tools (color blindness correction glasses or spectrometer, etc.); When in-depth development encounters a bottleneck, switching tracks may open up horizons in breadth. Insufficient or limited views (lack of color resolution) are relatively easy to convince or prove, and it is more difficult to deal with different opinions.

The book Qi Wu Lun, an ancient Taoist thought, talks about debate: if I argue with you, will the winner be right; If someone else is asked to judge, how can the person who agrees with you or me judge fairly? Conversely, how can he judge if he has different opinions from you and me? [2] After entering modern times, we have made more progress than the ancients. We know that debate can be divided into fact and value debate. Factual arguments can be explained or verified by objective methods (such as science). The judgment of value has a certain "subjectivity". The different opinions on the value of two people may be different tastes. For example, if one person thinks oysters are delicious and the other person thinks oysters are not delicious, there is nothing to argue [1]. When exploring the thinking process of debate, people can find the logic of thinking and understand each other's initial values and positions. Perhaps harmony and difference can also be the final answer. As the usual example says, one person has an apple and one person has an orange. After the exchange, the mass is conserved; But after the exchange of ideas, everyone has two. In this way, we can get a more comprehensive understanding in the communication with people from different positions. It's not easy to get different opinions. We will get used to some familiar things in life.

Culture is hard to describe, because people's growth is a process of integration with culture. Culture is like air and food necessary for life. "I don't know the true face of Lushan, but only because I am in this mountain" is to describe such a situation. Sichuan people will say that they eat food instead of emphasizing Sichuan food; We don't talk about Chinese food in our daily life. It will be emphasized only when compared with the diet of other countries. The exchange of chefs between Sichuan University and Fudan University [3] not only gives students and teachers more food choices, but also provides the possibility of cultural comparison and exploration. I always eat Chinese food. Maybe I will know more about the emphasis of Chinese diet on shape and color after eating Indian food. I can also feel the importance of spices such as curry to increase food flavor. There will be some anecdotes in cross-cultural communication to increase the feeling of life. When I first studied in Pittsburgh, the American teacher of the English Center was very curious about why some Chinese students hold umbrellas in heavy snow. After discussion, I guess that some students in the South have often experienced sleet, which will wet their clothes, so they copy the experience of holding an umbrella to the weather with goose feather and heavy snow. Compared with China's nap habit, it seems that only kindergartens in the United States have the habit of nap. After entering primary and secondary schools, there is no nap. That is because many primary and secondary schools in the United States finish school before 3 o'clock, so there is no need for nap. Will some American students' fear of mathematics and science be related to the thickness of teaching materials? American teaching materials pursue comprehensive content, cover a large number of exercises, and are often hundreds of pages thick like bricks. Anyone will feel pressure if they change. Communication and exchange promote the perception of different angles of daily life. The cultural impact felt by some foreign students and the ideas of communication or sharing can make us understand Chinese culture and habits more.

Some key universities recruit foreign students because they can expand the academic influence of these key universities after returning home. On the other hand, through exchanges during their study, foreign students can also promote local students' understanding of culture. Hans Roslin's book "facts" says that people living in developed countries underestimate the degree of social progress in developing countries, and people in developed countries are easy to answer the test questions about the level of social development in developing countries [4]. I guess that because these test questions about the living conditions of developing countries do not affect people's daily life in developed countries, it is difficult for readers in developed countries to remember these facts. For example, people who don't eat spicy strips don't necessarily know the price of spicy strips. Students who eat in the school canteen don't know the price of vegetables or meat in the vegetable market. Some people can't remember the distance between the sun and the earth, because these facts don't affect the decision of daily life, so it's difficult to impress people. If you want to increase your understanding of the world, you need some impact and comparison to deepen your impression. "Chinese culture is unified, but not homogeneous." [5] an inclusive culture will become more broad and comprehensive because it absorbs the opinions of students from other countries. Of course, when recruiting foreign students, we also need to pay attention to blocking the loopholes of fake immigrants going to famous schools [6]. Indeed, some Chinese immigrants have settled in Singapore, Malaysia, Britain and the United States, but the first priority for emigration is language. Language is the most important tool to communicate with others and a necessary condition for survival. Many local cultures are condensed in the language. When some famous universities in China recruit foreign students, they increase foreign language requirements, evaluate and test the fluency of foreign local languages, so as to shield most false immigrants, recruit foreign students and absorb different cultures condensed in different languages.

The communication in culture and education depends on individuals, and individual communication and exchange promote the evolution and development of culture and education as a whole. Different courses in universities are often explained by different professors. Students can feel the styles of different teachers and give different feedback. Even a course is jointly explained by several professors. Older professors have more teaching experience and know how to convey the overall development of scientific research more effectively; Some young professors are more exposed to the frontier of scientific research and can provide more novel methods and conclusions. In the case of joint teaching, teachers can have constructive criticism and communication. Old professors feel the passion of young people, and young teachers gain teaching experience and a more comprehensive grasp of the subject. Similar to the duet in music, it gives a different experience from the solo. In the common teaching of teachers, students can get a more wonderful balance and harmony of scientific research and knowledge.

Different from university teaching, primary and secondary school teachers generally maintain the continuity of curriculum teaching and lack mobility. A subject is usually taught by the same teacher until students graduate. At different stages of education, students will show different levels of understanding. For example, middle-class students in primary school seem to suddenly have wisdom and become leaders after entering middle school. Some students will touch their own ceiling, realize that there are people outside, and become more tolerant and considerate of others; Some students will make progress from ordinary and will not limit their future development because of their past achievements. These mobility characteristics also make education more interesting. Therefore, the author is also opposed to the consistent system of primary school, junior middle school or junior middle school and senior high school, because less shuffling will reduce the beneficial competition among students and reduce the vitality of mobility in education. For teachers, because they accompany the growth of students, they need to remind themselves from time to time, take off their colored glasses and be willing to find and encourage changes in the growth of students.

The communication and exchange between teachers can provide a new perspective to observe. The way of open classes in primary and secondary schools is to show the characteristics of such different teachers and provide other teachers to learn or criticize. Sometimes, a teacher can ask different students to answer questions because of lack of understanding of the students in the class, so that students or teachers can feel different styles. To absorb such a trickle of small changes, you don't have to wait for a student to adopt them after graduation. Perhaps it is more timely feedback. The exchange or audit of some teachers in cities, counties or rural areas can enable teachers to obtain a different comparison, change their previous inherent positions or assumptions, and increase their more comprehensive understanding. The new understanding generated in the communication can be published and shared by means of teaching papers. Nowadays, in the network era, some teaching papers or databases that are not open access can not convey the new teaching concept and experience to other teachers. It is better to build an open access website for teaching experience and knowledge sharing. Of course, open access to the website is only for teachers to prevent students from taking shortcuts and searching for answers, not through their own thinking. Similar to Zhihu, microblog and other websites, teachers are allowed to visit praise. Some good exercises, lesson preparation Notes, explanation guides of key knowledge points and so on can be shared among teachers. Teachers can also discuss the psychological changes of some adolescent students or the problems encountered during lectures in some anonymous ways. The three cobblers can share some useful experiences by surpassing Zhuge Liang's crowd sourcing and wisdom of crowds. Some exercises can also establish different classifications. According to different knowledge points, they can also automatically generate some teaching diagnosis papers to check and fill gaps in knowledge teaching. Such a collection of commonly used questions and answers (FAQs) is easier to build in the Internet age than in the past. Especially teachers in underdeveloped areas can have more accessible access to the excellent experience of these other teachers through the network. Although the network has endless free knowledge, the identification and screening still need the participation of teachers, teachers to lead in, and teachers to teach people to fish.

The front teachers' communication is more horizontal, but the vertical communication is also very beneficial. Society highly values the profession of teachers, because teachers cultivate the future of society, and the profession of teachers has stable advantages, but too stable may also bring some adverse situations. In daily life, teachers improve some educational methods and means and update some knowledge reserves. Although students go to teach after graduation, the main content of their work is still teaching and educating people, and the main contact groups are students and parents. Similar to the academic leave of university professors, after taking students for six years (two middle schools or one primary school), primary and secondary school teachers can also rest for a semester and go to the university to exchange for a semester to understand some of the latest research conclusions of educational psychology and cognitive psychology, which is conducive to teaching. In the University, you can contact more students from different regions, understand some skills required by university social recruitment, and connect secondary schools and universities more clearly. Or during the winter and summer vacation, go to the university to participate in some workshops, communicate and discuss some specific topics, and cultivate some specific skills, such as multimedia assisted teaching, computer programming, modular education concept and so on. Such vertical communication can connect some discontinuities in talent training between middle schools and universities, universities and society, which is more conducive to people's growth.

To study things, phenomena and cultures, researchers need to keep some distance in order to conduct more objective experiments, observations and analysis; Only by drawing away from yourself, comparing with others and absorbing others' opinions can we obtain a more objective understanding. Amphibians can appreciate the beauty of both water and land worlds. Humility and tolerance can encourage more exchanges and promote more progress in education and culture.