People are now living in a very civilized and open society. Naturally, people nowadays will not be like primitive people without any social system. If they have their own culture, they will naturally have civilized regulations. Human society has evolved step by step. From the very beginning, human beings were just like ordinary animals, without any difference. As human beings continue to evolve, they gradually changed from primitive people to humans. As it is now, people know more and have created their own society and their own culture.