This question could be answered from many angles. The definition of a good man and a bad man was different. Generally speaking, bad men referred to those who were irresponsible, selfish, and deceived others. Good men referred to those who were responsible, responsible, and honest. Good men usually have very high standards for their own morals. They will abide by social norms and moral standards and are unwilling to do things that go against their conscience. Bad men, on the other hand, may not have such strict moral standards. They may be unscrupulous and even violate social norms and moral standards for their own interests. Good men usually have good self-control and self-discipline. They are not easily affected by external temptations, while bad men may be more easily affected by external temptations. Good men and bad men had different personalities and psychological mechanisms. Generally speaking, good men would cherish their reputation and image more. They had stronger self-esteem and were more afraid of losing their dignity and status. Bad men, on the other hand, may be more concerned about their own interests and happiness. They are more confident, independent, and not afraid of losing their own things. Based on the above reasons, we can see that although good men and bad men are both human beings, their behavior and psychological mechanism are different, so it is not easy to let them learn bad things.