The Logic of Being

Por • 30 ago, 2018 • Sección: Educacion

Simo Knuutlla and Jaakko Idntikka(eds.)

The main object of study in this collection is the status of a theory, ascribed to Frege, popularized by Russell and widely accepted by the last two generations of teachers in logic. The theory discriminates four meanings of the term “being”. Frege, this theory claims, discovered that “is” designates (i) Existence: “God is”; (ii) Predication: The Copula in “John is ill”; (iii) Identity: “The morning star is the evening star”; and (i’v) Class inclusion: generic implication in “If something is a horse, it is an animal”. However, when historians look at classical Greek philosophy, they discover that neither Greek language, nor the expressed convictions of great thinkers such as Plato and Aristotle agree completely or even partially with the Frege-Russellian orthodoxy. Philosophical logicians (more precisely the influential Jaakko Hintikka – the coeditor of this series) also attack it as being far from obvious from the point of view of the seman tical and logical analysis of natural language. As a result, it becomes both necessary and useful to gather evidence against the “Fregean thesis” regarding the ambiguity of “is” in order to evaluate its force. The prosecution stands accused!

Historical Studies. Dordrecht: D.Reidel, 1986

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