牛顿对人类的重大贡献之一，是发现了自然界的惯性。其实，复杂多变的人类社会也在一定范围内存在惯性，有时还会给人类带来麻烦。人类社会的惯性就好比一条有轨列车的线路，列车驶来驶去都很安全快捷，人们都习以为常，但也不定什么时候，会出现脱轨、撞车甚至颠覆。日本经济 One of Newton’s major contributions to mankind was the discovery of the inertia of nature. In fact, the complex and ever-changing human society also has inertia within a certain range, and sometimes brings trouble to human beings. The inertia of human society is like a line of rail trains. It is safe and fast for people to drive in and out of the city. However, it is not uncommon for people to become derailed, crashed or even subversive. Japanese economy