It has been said, "Not everything that is learned is contained in books." Compare and contrast knowledge gained from experience with knowledge gained from books. In your opinion, which source is more important? Why?

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#4 It has been said, "Not everything that is learned is contained in books." Compare and contrast knowledge gained from experience with knowledge gained from books. In your opinion, which source is more important? Why?
There are two main channels for people to learn knowledge: from books and from experience. Generally, while knowledge gained from books is theoretical, that gained from experience is practical. It is difficult to answer which is more important to people. It depends on the phases and events of our learning. Knowledge learned from books is instructive, which perhaps cannot be learnt directly from experience. We often hear thunder and see lightning in the sky, and we can easily find out that lightning will be seen sooner than sound will be heard.
According to our experience alone, we cannot tell why this happens. But when we learn some physics in textbooks, we will find the answer that while light travels faster than sound does, it takes less time for light to travel the same distance as sound. Therefore, book knowledge can inform us some useful theories that can give us general ideas and help us understand the real phenomenon better.
In turn, practical knowledge can check out the theories gained from books. There is an old Chinese saying that practice is the only criterion of inspecting the truth. So not all knowledge from books is credible. Rather, it can be even false. When Aristotle wrote in his transcripts that the earth is the center of our solar system, no one doubted it for centuries. However, when Galileo read about it, he did not suspect it at first, but when he made some observations and research, he found it was not the truth. Then he came to the new theory called heliocentrism, which is the theory that the Sun is at the center of the Solar System.
In our daily lives, we can learn much information from practice. To learn swimming, it is useless to be absorbed in reading skills written in books. Only when you learn it in a swimming pool, you can make it. There are still a lot of things you must learn from your own experience, such as driving a car, riding a bicycle, operating a machine. And the most important is that it is often easier learn knowledge from practice than from books. As far as average people are concerned, it is natural to learn from experience. Primitive people learned skills one to one which is the way they were handed down from one generation to another.
Modern people also learn things in practice. In workshops, leading workers teach apprentices carefully; in activity clubs, teachers teach youngsters to be familiar with their hobbies. It is obvious that all things considered knowledge gained from practice is more close and direct than that from books. Therefore, the two kinds of knowledge has importance. For researchers, knowledge from books is more important, while for average people, knowledge from practice is more important. As students, we must first learn knowledge from books well, and at the same time we must have the good sense to tell what is right from what is wrong.

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