为啥美国一段时间就要有次经济危机？美国的繁荣，就是依靠定期的经济危机保证的；该死掉的不死掉，苟延残喘，耗费社会资源，早晚会把美国拖垮的。
天地之所以长久，就是因为自然界中没有医疗，没有社保，该死掉的就该死掉。
If all the insects were to disappear from the earth, within 50 years all life on earth would end. If all human beings disappeared from the earth, within 50 years all forms of life would flourish. --Jonas Salk
人为干预是这个世界上最糟糕的。
