Sentence:  Fuzzy Set Theory was formalised by Professor Lofti Zadeh at the University of California in 1965. What Zadeh proposed is very much a <WSD>paradigm shift</WSD> that first gained acceptance in the Far East and its successful application has ensured its adoption around the world. 
Meaning of the word marked with <WSD> tags:  A radical change in thinking from an accepted point of view to a new belief.