Conceptual relativism concerns truth and knowledge and specifically pertains to the ability of the human mind to construct different realities, people have different versions of realities but there is no no single reality that is the same. with truth, there is no absolute truth, there are only truths. (Lazar 1998) Many authors have described the nature of this phenomenon in their own language, which has given rise to many different views of conceptual relativism. Daniel Little thought that conceptual relativism was concerned with the fact that the world was divided into so many different countries, cultures, religions, and beliefs. It would not be possible to have a single theory about the structure of everything that happens in the world, because all individuals think differently, how can one theory be more plausible than another. (Lazar 1998) Peter Winch had a more radical view and argued that science had absolutely nothing to do with explanations of what existed. He stated that human beings are more than just physical objects and that if human action was not understood from within, how could the social sciences understand human action? He went on to say that the majority of sociology was not actually a science but rather a masked type of philosophy. Winch's claims against the social sciences caused problems and some ethnomethodological sociologists changed the way they studied society and developed a non-scientific path. (Lock 2010) However, rationalists such as Popper reject the idea of ​​relativism because he believed that if all individuals did not share the same basic framework of knowledge, no agreement could ever be reached. (Benton 2001) From the perspective of conceptual relativism, philosophers can give their opinions on specific topics in the middle of an article......this takes a long time because greater depth is sought. (Bryman 2004) In conclusion conceptual relativism aims to explain the world in terms of the human mind to construct realities and is concerned with truth and knowledge, while radical social constructionism is concerned with the idea that a variety of phenomena are socially constructed. This is then linked to the idea of ​​radical anti-realism in relation to reality and the validity of science. Both are definitely problematic for any claim that the social sciences produce reliable knowledge. If knowledge only has meaning for one group, how can it have the same meaning for another group? Each individual sees the world through their own glasses, so each individual has a different vision. opinion and no opinion can be correct. How can research methods be correct if there is no real truth? ??