Haack On Fuzzy Logic Essay -- Haack Philosophy Philosophical Essays

Haack On Fuzzy LogicABSTRACT Much of the come along in modern logical system beyond Aristotle is due to the invention of a precise and powerful formalism, and this is why Haack is reluctant to weaken it. What motivates her to regard aberrant and fuzzed logic as extensions rather than rivals of classical logic is its exhibit capacity for refinement and progress. Thus she sharply distinguishes between a logic dealing with stuporous concepts (she accepts), and one which is itself fuzzy, i.e., where true and sham cease to be precise concepts (she rejects). While it is often more convenient to retain as much as possible of classical logic because of its simplicity and familiarity, there is nothing in the hermeneutical view of logic to render it immune from revision. soon enough to treat logic as a canon of interpretation conflicts with Haacks topic of what logic is and does. L.A. Zadeh who introduced the term fuzzy logic reserves it for the result of a second stage of fuzzificati on, motivated by the idea that true and false are themselves vague a family of systems in which the indenumerably many values of lawfulness values of the base logic are superseded by denumerably many fuzzy faithfulness values, true, false, very true, fairly true, not very true, etc. For fuzzy logic, Zadeh tells us, such traditional concerns as approximation, proof procedures, etc. are skirting(prenominal) because fuzzy logic is not just logic of fuzzy concepts, exclusively is logic, which is itself fuzzy. (1) Susan Haack criticizes Zadeh on the grounds that fuzzy logic is not well motivated, since truth does not come in degrees. Inevitably some will remonstration that fuzzy logic is working, and so that her distaste for it can only be an expression of a Fregean prejudice. But she claims that i... ...ic Justification of a Conceptual Notation, 1882/ reading by Bynum T. Ward in Gottlob Frege Conceptual Notation and Related Articles, Oxford Claredon agitate 1982, p. 86.(6) F.S.C. Schiller, Formal Logic, A Scientific and Social Problem, London Macmillan 1912, p. 8.(7) Haack, p. 233.(8) R. Carnap, Logical Foundations of Probability, clams Chicago University Press 1950.(9) Haack, p. 233.(10) ibid. p. 234.(11) L.A. Zadeh and R.E. Bellman, Local and Fuzzy Logics, in M. Dunn and G. Epstein, Eds, modern font Uses of Multiple-Value Logics, Dordrecht Reidel 1977, pp. 106-107.(12) Haack, p. 236.(13) ibid. p. 237.(14) L.A. Zadeh, A Fuzzy-Algorithm Approach to the Definition of Complex or inaccurate Concepts, International Journal of Man-Machine Studies 1976 vol.8 p.269n.(15) Haack, p.238.(16) ibid. p. 240.(17) ibid. p. 242.