Foundations of a Postmodern Turn in Science, Version 2.0: Postmodern Fuzzy Set and Fuzzy System Theory

The postmodern subjective representation of reality in our minds has two stages: 1) reconstruction of reality (rather than simple reflection) based on cognitive, emotional and behavioral mechanisms and 2) subjective evaluations of reality. The 20 century postmodern turn in science went straight to 2) without uncovering and quantifying 1). The need for a 21 century “postmodern turn in science version 2.0” is argued here and a postmodern “deconstruction” method is proposed to uncover and quantify the reconstruction process by the reverse engineering of the subjective evaluations which were quantified by the 20 th century postmodern turn in science version 1.0. Postmodern fuzzy sets and fuzzy systems can help the postmodern turn version 2.0 in life, behavioral and social sciences including economics and finance. This is because fuzzy sets and fuzzy systems are ideally positioned at the interplay between exact sciences on one side and life, behavioral and social sciences on the other side. A Kabbalah based postmodern fuzzy set and fuzzy system theory version 2.0 has been developed and applied to advance foundations for postmodern versions 2.0 of: 1) behavioral and knowledge based economics, 2) cybernetics and system theory, 3) complex system modelling and 4) artificial intelligence and knowledge engineering.