The is-ought gap and the substitution criterion

Ever since its formulation by Hume, the idea of an inferential barrier between non-ethical (“is”) propositions and ethical (“ought”) propositions (also known as Hume’s is-ought thesis) has received much philosophical attention. Prior’s Paradox appears to demonstrate that the ban on “is”-“ought” infe...

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Main Author: Chen, Melvin
Other Authors: School of Humanities
Format: Journal Article
Language:English
Published: 2022
Subjects:
Online Access:https://hdl.handle.net/10356/160057
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author Chen, Melvin
author2 School of Humanities
author_facet School of Humanities
Chen, Melvin
author_sort Chen, Melvin
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description Ever since its formulation by Hume, the idea of an inferential barrier between non-ethical (“is”) propositions and ethical (“ought”) propositions (also known as Hume’s is-ought thesis) has received much philosophical attention. Prior’s Paradox appears to demonstrate that the ban on “is”-“ought” inferences is violated in every possible instance, from which it follows that Hume’s is-ought thesis must be false. In this article, I will formulate a logically rigorous version of Hume’s is-ought thesis, introduce Prior-style counterexamples, and suggest how they might demonstrate the falsity of Hume’s is-ought thesis, identify the substitution criterion, and develop at length the unrestricted and restricted versions of this criterion as it is applied by Pigden and Schurz. Thereafter, I will outline Schurz’s defence of the is-ought gap in accordance with his interpretation of the substitution criterion, before introducing a more sophisticated version of Prior-style objections, proposing a possible response from Pigden, identifying the costs of Pigden’s response and counter proposing a response on behalf of Schurz through an extension of his approach, and offering concluding remarks.
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spelling ntu-10356/1600572022-07-12T04:34:33Z The is-ought gap and the substitution criterion Chen, Melvin School of Humanities Humanities::Philosophy Is-Ought Substitution Criterion Ever since its formulation by Hume, the idea of an inferential barrier between non-ethical (“is”) propositions and ethical (“ought”) propositions (also known as Hume’s is-ought thesis) has received much philosophical attention. Prior’s Paradox appears to demonstrate that the ban on “is”-“ought” inferences is violated in every possible instance, from which it follows that Hume’s is-ought thesis must be false. In this article, I will formulate a logically rigorous version of Hume’s is-ought thesis, introduce Prior-style counterexamples, and suggest how they might demonstrate the falsity of Hume’s is-ought thesis, identify the substitution criterion, and develop at length the unrestricted and restricted versions of this criterion as it is applied by Pigden and Schurz. Thereafter, I will outline Schurz’s defence of the is-ought gap in accordance with his interpretation of the substitution criterion, before introducing a more sophisticated version of Prior-style objections, proposing a possible response from Pigden, identifying the costs of Pigden’s response and counter proposing a response on behalf of Schurz through an extension of his approach, and offering concluding remarks. 2022-07-12T04:34:33Z 2022-07-12T04:34:33Z 2021 Journal Article Chen, M. (2021). The is-ought gap and the substitution criterion. South African Journal of Philosophy, 40(3), 254-264. https://dx.doi.org/10.1080/02580136.2021.1949558 0258-0136 https://hdl.handle.net/10356/160057 10.1080/02580136.2021.1949558 2-s2.0-85114331739 3 40 254 264 en South African Journal of Philosophy © South African Journal of Philosophy. All rights reserved.
spellingShingle Humanities::Philosophy
Is-Ought
Substitution Criterion
Chen, Melvin
The is-ought gap and the substitution criterion
title The is-ought gap and the substitution criterion
title_full The is-ought gap and the substitution criterion
title_fullStr The is-ought gap and the substitution criterion
title_full_unstemmed The is-ought gap and the substitution criterion
title_short The is-ought gap and the substitution criterion
title_sort is ought gap and the substitution criterion
topic Humanities::Philosophy
Is-Ought
Substitution Criterion
url https://hdl.handle.net/10356/160057
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