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Instrumental rationality without separability

Thoma, Johanna (2018) Instrumental rationality without separability. Erkenntnis. pp. 1-22. ISSN 0165-0106

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Identification Number: 10.1007/s10670-018-0074-9

Abstract

This paper argues that instrumental rationality is more permissive than expected utility theory. The most compelling instrumentalist argument in favour of separability, its core requirement, is that agents with non-separable preferences end up badly off by their own lights in some dynamic choice problems. I argue that once we focus on the question of whether agents’ attitudes to uncertain prospects help define their ends in their own right, or instead only assign instrumental value in virtue of the outcomes they may lead to, we see that the argument must fail. Either attitudes to prospects assign non-instrumental value in their own right, in which case we cannot establish the irrationality of the dynamic choice behaviour of agents with non-separable preferences. Or they don’t, in which case agents with non-separable preferences can avoid the problematic choice behaviour without adopting separable preferences.

Item Type: Article
Official URL: https://www.springer.com/philosophy/journal/10670
Additional Information: © 2018 Springer Netherlands
Divisions: Philosophy, Logic and Scientific Method
Subjects: B Philosophy. Psychology. Religion > B Philosophy (General)
Sets: Departments > Philosophy, Logic and Scientific Method
Date Deposited: 09 Oct 2018 11:56
Last Modified: 20 Mar 2020 00:02
URI: http://eprints.lse.ac.uk/id/eprint/90392

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