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In the early 19th century, a malignant accident happened which the carriage rolled people in the front of the House of Parliament. Mechanical Virtue Hart got inspired from women’s dress, and then invented the traffic light. Yorkshire which is in the center of Britain, red and green stand for the different status of female: red means married and green means unmarried. In 1868, Hart designed and manufactured the first traffic light in history. The lamp post was high seven meters, which hanged on a red and green dichromatic hanging lamp (gas lamp). Under the light, a police pulled the belt to convert light color to tell vehicles and pedestrians to stop and go. 23 days later. Gas light burst suddenly, the duty police was dead, and so the light was banned. By 1914, the electric lamp replaced gas lamp to solve the security problem of the light, and the traffic lights appeared in the Cleveland in America. Later, New York and Chicago and other cities started to use. Before this, there were only red light and green light. The third light was installed in a tower of No. 5 street in New York. The inventor of the yellow light is a Chinese who was employed by the general electric. One day, he stood beside the light to wait for the green light signal, just at the moment of the convert of light, a car drove beside him, what made him frighten. By this stimulation, he returned back to the dormitory, after thinking, he wanted to add a yellow light as a buffer. His proposal was adopted, and then the three light produced. From here, we can see just such a signal system and the corresponding rules of the road should be accumulated by many people’s wisdom in a long time. People just depended on this rules of long-term evolution to coordinate the individual choice conflict, and then walked out of the savage. Society is composed of many individuals. There must have a large of choice conflict among the individuals, and the conflict should coordinate by rules. If we want to pass through a cross and keep the crossing unobstructed, it thanks to a set of rules of coordination. Most players play online games for fun and they almost play every day. So the gold is used up soon, they have to buy in D3 Gold, Buy D3 Gold and D3 Gold Sale.
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Coordination, coordinate, individual,
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