著者

三好 潤一郎

出版者

The Philosophy of Science Society, Japan

雑誌

科学哲学 (ISSN:02893428)

巻号頁・発行日

vol.41, no.2, pp.2_31-2_43, 2008 (Released:2009-08-31)

参考文献数

33

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Prisoner's Dilemma is often mentioned to assert that morality is not rationality and that it makes possible the optimal choices which rational players can not choose. However, I argue that this view is not a correct solution of the dilemma. Rather, folk theorem provides the way to achieve the optimal rationally. It shows that a cooperative action is taken by each player to maximize his or her payoff in the long term. Therefore, morality should be seen as a kind of rationality. From this perspective, virtues are some advantageous characteristics of particular rational agents and moral rules are descriptions of equilibrium strategies in the social repeated games.

著者

三好 潤一郎

出版者

日本イギリス哲学会

雑誌

イギリス哲学研究 (ISSN:03877450)

巻号頁・発行日

vol.21, pp.51-63, 1998-04-01 (Released:2018-04-25)

参考文献数

10

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J. L. Austin presented an elaborated correspondence theory of truth. His formulation of the truth condition of statements roughly is as follows: a statement is true when the situation to which it is correlated by the demonstrative conventions is of a type of situations with which the sentence used in making it is correlated by the descriptive conventions. Austin uniquely asserts there are various degrees of truth. His truth condition can explain this in two ways. Firstly, the degree of truth is that of a situation's being of a given type. Secondly, it is the position, in the hierarchy of types, of the type which a given situation is of.