The main goal of science is to achieve more authentic narratives than the reality, which are presented in the form of scientific theories. According to Frederick Soddy, "It might be a little bit of exaggeration if we claim that the philosophy of science is a little beyond the analysis of theories and their role in scientific activity." In the first three chapters, the author reports the most remarkable works on the philosophy of science to introduce the structure of scientific theories. Chapter IV deals with the relationship between experiment and theory, and Chapter V addresses the similarities and differences between the natural sciences and the social sciences. Like the existing theories in the natural sciences, are those in the social sciences testable? Or is there any fundamental difference between the experiments conducted in these two fields? In the last chapter, to find answers to such questions, a dialogue between an opponent and a proponent of basic differences between natural sciences and social sciences is set.