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The Rules of Thought$
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Jonathan Jenkins Ichikawa and Benjamin W. Jarvis

Print publication date: 2013

Print ISBN-13: 9780199661800

Published to Oxford Scholarship Online: September 2013

DOI: 10.1093/acprof:oso/9780199661800.001.0001

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Fregean Sense First

Fregean Sense First

Chapter:
(p.132) 5 Fregean Sense First
Source:
The Rules of Thought
Author(s):

Jonathan Jenkins Ichikawa

Benjamin W. Jarvis

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780199661800.003.0006

This chapter concerns deductive reasoning. It is of note that subjects are not generally rationally permitted to jointly accept propositions that are logically inconsistent. This fact illustrates the rational significance of the logical relations that hold between propositions. This chapter addresses the epistemology of logic by defending a minimalist explanation of this rational significance. Rational significance is a primitive feature of the logical and certain other entailment relations in which propositions stand in. It is argued that alternative explanations in the contemporary literature—including explanations given in terms of concept possession, metasemantics, pragmatism, and evaluationism—are not promising.

Keywords:   deductive reasoning, epistemology of logic, concept possession, metasemantics, pragmatism, evaluationism

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