Fuzzy logic, postmodern subjectivity and psychoanalysis

The title of this article involves the interaction of the natural and social sciences. Two approximations that not only must be complementary, but insufficient separately. Fuzzy logic, as part of the mathematics, is more related to the natural sciences, but believes that the facts are not true or false at all, they are not absolute truths, but somewhat polyvalent and relative. Moreover, postmodernism and hermeneutics are relativistic and realize that the truth has several possible interpretations, depending on the observer, on his prejudices, on his situation and on his historical moment; but though there does not exist the only and exclusive reality, it is possible to approximate a certain degree of veracity.