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Roger Swyneshed's Obligationes: A Logical Game of Inference Recognition?

Catarina Dutilh Novaes
Synthese
Vol. 151, No. 1 (Jul., 2006), pp. 125-153
Published by: Springer
Stable URL: http://www.jstor.org/stable/20118792
Page Count: 29
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Roger Swyneshed's Obligationes: A Logical Game of Inference Recognition?
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Abstract

In [Dutilh Novaes, Medieval-obligations as logical Games of Consistency maintenance, synthese, (2004)], I proposed a reconstruction of Walter Burley's theory of "obligationes", based on the idea that Burley's theory of obligationes could be seen as a logical game of consistency maintenance. In the present paper, I intend to test the game hypothesis on another important theory of "obligationes", namely Roger Swyneshed's theory. In his treatise on "obligationes" [edited by P.V. Spade, cf. Spade History and philosophy of Logic 3(1982) 1-32], Swyneshed introduced significant modifications to the general framework of "obligationes". To compare the two theories, I apply the same formal apparatus used in the previous paper. It will become patent that Swyneshed's theory is considerably different from Burley's, among other reasons because the dynamic aspects that play a major role in the latter are simply not present in the former. My conclusion is that Swyneshed's version of "obligationes" is not directed towards consistency maintenance, but rather towards inference recognition, and that it is, from a game-theoretical perspective, less interesting a theory than Burley's.

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