(2) History-logical method History refers to the historical process of the development of objective things (including nature and human society) and the historical development of human understanding of objective reality (such as the history of science, philosophy and thought). ).
(3) System science methods System science methods include system methods, information methods, control methods, structural methods and functional research methods.
(4) Genetic method Genetic method is a research method based on analyzing the origin and development process of natural and social phenomena.
(5) From abstraction to concreteness, both abstraction and concreteness here refer to the abstraction and concreteness of thinking in the stage of rational cognition.