A Logic of Practical Reasoning |
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| Authors: | Georg Spielthenner |
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| Affiliation: | (1) The University of Zambia, P.O. Box 32379, Lusaka, Zambia |
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| Abstract: | In this paper my primary aim is to present a logical system of practical reasoning that can be used to assess the validity of practical arguments, that is, arguments with a practical judgment as conclusion. I begin with a critical evaluation of other approaches to this issue and argue that they are inadequate. On the basis of these considerations, I explain in Sect. 2 the informal conception of practical validity and introduce in Sect. 3 the logical system P, which is an extension of propositional logic and can be used to assess the validity of a wide range of practical arguments. In the last section, I apply this system to some examples of practical reasoning in order to demonstrate how it can be used in practice. |
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| Keywords: | Practical reasoning Ethics Practical arguments Practical inference Validity Practical logic |
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