Fuzzy logic

摘要

David Jewell finds the journal title Fuzzy Optimization and Decision Making incomprehensible,1 while Richard Lehman contrasts fuzzy with logical thinking.2 Now I have never seen this journal, but I would expect it to deal with fuzzy logic, which far from being illogical, is an attempt to adapt classical logic to fit it to deal with a world of ill-defined concepts. So it deals with fuzzy sets with borderline possible-members, fuzzy predicates such as ‘tall’, fuzzy quantifiers such as ‘most’, and fuzzy modifiers such as ‘usually’. While I am no sort of expert in fuzzy logic, and while many would not see it as a wholly satisfactory logical system, I would at least applaud the attempt to further try to understand and deal with the ‘real world’, and would think that we GPs would find useful and relevant such a concept of ‘fuzziness’.