David Bloor, one of the authors of the strong programme for the sociology of science, evoked Florian Znaniecki, together with Emile Durkheim and Karl Mannheim as one of pioneers of the new sociology of science. However, the approach of representatives of SSK (sociology of scientific knowledge) to Znaniecki's oeuvre is somehow ambiguous. The authors of the strong programme do not analyse his works, satisfying themselves with its purely declarative approval. The authoress goal in this article is to point out that if they did study Znaniecki's work carefully, they would probably notice some clear contradictions between their programme and Znaniecki's ideas; they could also trace several ideas deserving to be developed. Firstly, they should have noticed Znaniecki's disapproval of attempts at creating sociology of science/knowledge that would explain the content of scientific beliefs. Secondly, they could have realised the existence of many important similarities between Znaniecki's theory of cultural systems and K.R Popper's idea of the Third World, as Popper's work was their main negative point of reference. Thirdly, they could have analysed Znaniecki's idea of humanistic coefficient in search for inspirations.
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