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Title: The Frege-Geach Problem and Blackburn’s Expressivism
Authors: 謝昭銳
Tse, Chiu Yui Plato
Hung, Chi-Ho
Contributors: 哲學系
Date: 2020-03
Issue Date: 2021-04-22 15:31:17 (UTC+8)
Abstract: Blackburn has outlined a formal account for moral expressivism, and we argued that the moral Frege-Geach problem can be solved formally by appending two rules for the boo-operator which are missing from his account. We then extended Blackburn’s formal account to generate a similar solution to the problem in modal context and showed that the validity of the modal argument can be preserved too in modal expressivism. However, the higher-order element endorsed by Blackburn does not seem necessary for solving the Frege-Geach problem. Nor is his extension from moral expressivism to modal expressivism tenable, since the latter violates its own ontological constraint. A general moral is drawn on the basis on three observations made in evaluating Blackburn’s expressivism.
Relation: Philosophia, Vol.48, No.5, pp.2021-2031
Data Type: article
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