The knowledge in the book comes from a person's experience, plain in the past that he recorded and reproduced in form letters. Show that the starting point of knowledge is experience. People with poorer knowledge advantage over people who don't have the knowledge that is the exact story, but if there is a hole, but it is not good to ฏ้ไม่ effective. On the other hand, if I don't know, but do it inevitably has the experience and knowledge is also up because of knowledge, experience, can be created.
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