Meinongian 'objects' are evoked in an effort to critique and expand upon traditional theories of reference. The argument stems from an account of Peirce's categories of meaning in light of vague, contradictory, inconsistent, general, incomplete, and incompleteable signs. In addition to signs as either 'true', 'false', or meaningless, the function of imaginary numbers reveals the possibility of a sign's being both 'true' and 'false' or neither 'true' nor 'false', over time, and dialogically speaking. This demands a tolerance for vagueness, ambiguity, (...) contradiction, and incessantly changing meaning. (shrink)

In the Essay Locke argues abstract ideas within the framework of the descriptivist theory of reference. For him, abstract ideas are, in many cases, conceptual ideas that play the role of “descriptions” or “descriptive contents,” determining general terms’ referents. In contrast, in the introduction of the Principles, Berkeley denies Lockean abstract ideas adamantly from an imagistic point of view, and he offers his own theory of reference seemingly consisting of referring expressions and their referents alone. However, interestingly, he mentions a (...) general term’s “definition” and suggests that it determines the scope of the term’s referents. For example, he takes up the definition of a triangle as “a plain Surface comprehended by three right Lines” and suggests that just as Locke’s general idea of a triangle does, the definition determines the referents of the general term “triangle.” His definition reminds us of the fact that as Descartes grasps the content of the general idea of a triangle as “a figure enclosed by three lines,” so Locke grasps the abstract idea of a triangle as “a Figure including a Space between three Lines,” and so on. That is, since Berkeley is an imagist, he does not acknowledge Locke’s conceptual abstract ideas as “ideas,” but although he verbally denies “abstract ideas,” his theory of reference also actually has the same descriptivist framework consisting of referring expressions, their descriptive contents, and their referents. Thus, we understand the real reason why Berkeley’s criticism of Locke seems beside the point. (shrink)

Richard Rorty's eliminative materialism is an attack on dualism that has frequently been misrepresented and incorrectly criticized. By taking account of the mistakes that philosophers have made concerning eliminative materialism, a proper definition of the doctrine and a clarification of its relation to traditional materialism will emerge, as well as an understanding of its true strengths and weaknesses. The discussion centers around the original manner in which Rorty defended eliminative materialism by means of analogies to the elimination of talk about (...) demons and talk about macroscopic physical objects. (shrink)

Tensions between idealism and scientific realism have been resolved by an appeal to the theory/observation distinction. but many who support incommensurability reject the distinction in favor of a version of idealism, e.g., thomas kuhn who supports a version of relativist idealism in which the terms of a theory do refer, but only to a paradigm--relative world of entities. it is argued that the three kinds of idealism depend on a cluster theory of meaning for fixing the reference of scientific terms, (...) and that a realist interpretation of the growth of science must eschew such a theory of meaning. the kripke-putnam theory for reference fixing of theoretical terms is employed to show how one term, 'mass', is referentially invariant despite change in the theory of motion from newton to einstein. (shrink)

In place of earlier instrumentalist and phenomenalist interpretations of science both Quine and Sellars have developed highly influential realist positions centering around the doctrine that accepting a theory as explanatory and irreducible rationally entails accepting the entities posited by the theory. A growing reaction against this realism is partially based on perceived inadequacies in the doctrines of Quine and Sellars, but even more on reconstructions of scientific explanations which do not involve such ontic commitments. Three types of anti-realistic positions are (...) considered and criticized. Hesse's neo-Duhemian position couples a statistical theory of inference to a downgrading of purely theoretical statements. Sneed uses the method of axiomatrization through set-theoretic predicates to supply a reconstruction of Kuhn's account of scientific development. Here Ramsey-reduction sentences serve to eliminate purely theoretical terms. The longest section deals with van Fraassen's semantic model based on a state-space representation of scientific theories and the use of this model in interpreting quantum mechanics. It is argued that the model is valuable, but that the anti-realist interpretation accorded it is not justified and entails serious inconsistencies. (shrink)

Definitions of stronger and weaker versions of physical realism are offered, The first relating to the existence of physical objects and the second to the independence of their properties. It is argued that recent debates about the commensurability and convergence of scientific theories and the causal theory of reference are irrelevant to the truth of these theses, Although their proponents seem to think them linked. It is then argued that support for realist positions must be inductive. Such support is provided (...) for both the weaker and stronger theses. (shrink)