A New Definition of A Priori Knowledge: In Search of a Modal Basis

Metaphysica 9 (2):57-68 (2008)
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Abstract

In this paper I will offer a novel understanding of a priori knowledge. My claim is that the sharp distinction that is usually made between a priori and a posteriori knowledge is groundless. It will be argued that a plausible understanding of a priori and a posteriori knowledge has to acknowledge that they are in a constant bootstrapping relationship. It is also crucial that we distinguish between a priori propositions that hold in the actual world and merely possible, non-actual a priori propositions, as we will see when considering cases like Euclidean geometry. Furthermore, contrary to what Kripke seems to suggest, a priori knowledge is intimately connected with metaphysical modality, indeed, grounded in it. The task of a priori reasoning, according to this account, is to delimit the space of metaphysically possible worlds in order for us to be able to determine what is actual.

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Tuomas E. Tahko
University of Bristol

References found in this work

Two Dogmas of Empiricism.W. Quine - 1951 - [Longmans, Green].
Two Dogmas of Empiricism.Willard V. O. Quine - 1951 - Philosophical Review 60 (1):20–43.
Essence and Modality.Kit Fine - 1994 - Philosophical Perspectives 8 (Logic and Language):1-16.
Naming and Necessity.Saul A. Kripke - 1985 - Critica 17 (49):69-71.

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