Document Type

Article

Publication Title

Faith and Philosophy

Abstract

Graham and Maitzen think my CORNEA principle is in trouble because it entails "intolerable violations of closure under known entailment." I argue that the trouble arises from current befuddlement about closure itself, and that a distinction drawn by Rudolph Carnap, suitably extended, shows how closure, when properly understood, works in tandem with CORNEA. CORNEA does not obey Closure because it shouldn't: it applies to "dynamic" epistemic operators, whereas closure principles hold only for "static" ones. What the authors see as an intolerable vice of CORNEA is actually a virtue, helping us see what closure principles should-and shouldn't-themselves be about.

First Page

87

Last Page

98

DOI

10.5840/faithphil200724139

Publication Date

1-1-2007

Included in

Optics Commons

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