"History teaches us only one thing: knowing about the past cannot help people to make important decisions today.
...ctice. In China, “MaoZedong’s Ideology” and “Deng Xiaoping’s Theory” are two famous books. Chinese leader uses the spirit of them to rule his country. In fact, China has a good progress on developing. The second hand is the ancient people leave important technology to us. First, the technology need expand for a long time. The scientist need the forbears give him the important data. Then, he can continue to discover the secret. For example, we should collect information that how does the star move for many years, and then we can draw a conclusion. We should gather a great deal of information from the moon, and then we can land the moon. Second, most ancient technologies are full of secret. For example, the pyramid in Egypt is one of them. Human still want to resolve why the bodies can reserve very well, and how the pyramid is built with the huge stones. Another mystery is Chinese traditional medicine. With some especial plants and animal’s parts, it can heal the ill. The last reason is the past affair gives the person a lively lesson. Consider, for example, the yellow river in China often made flood in the past. The person who lives near the yellow river would le...