Reflections on a Fuzzy Logic of Scientific Discovery and Fuzzy Structures of Scientific Revolutions

Popper’s Logic of Scientific Discovery and Kuhn’s Structures of Scientific Revolutions are enormous important concepts on theories and their dynamic in 20 th century history and philosophy of science. How-ever, the works of the two have been criticized in the last half century and new views on theory nets and theory evolution appeared. In the last decades also new scientific methods and tools showed up and we can use them to describe the historical development of elements and networks of scientific theories. In this paper we make such use of Fuzzy Set Theory. We wonder: are Fuzzy Sets appropriate to describe scientific theories and their relationships to each other and also in time? Is there a fuzzification of the structures in philosophy of science? – This last question refers to the so-called “structuralist view” or “Metastructuralism” of theories that uses usual set theory. In this paper we propose a fuzzy approach to philosophy of science, that we name “fuzzy structuralist view” of scientific theories or “FuzzyMetastructuralism”.