Story of time 

We always complain about the injustice of the society, this is not good, that is not good, but we did not see that this society is originally a pyramid structure of the society. Social stability also needs a structure like a pyramid to conform to the law of continuous online decline of the food chain. The bottom layer of the pyramid is the majority of the people, while the upper layer is a few elite layers. The upper layer is continuously supplied by the lower layer, and the lower layer is continuously transported to the upper layer. It’s not that the lower level is impossible to cross the upper level, but that you want to climb online, you have to work accordingly.