Abstract
Here we examine the gradual acknowledgement of the distinction between contradiction and contrariety in the development of the so called Middle Wittgenstein’s philosophy of logic . Four decisive episodes are then investigated: The first is to be found in the tractarian passage 6.3751, in 1918, where Wittgenstein identifies the color exclusion with the contradiction; the second episode takes place in 1929, when he acknowledges that some exclusions do not have the form of a contradiction ; the third moment happens in December 1930, when Wittgenstein maintains that we should introduce additional rules to make the exclusion by contrariety have the form of a contradiction; and at last, in January 1931, Wittgenstein defends that these additional rules are postulations. This moment hallmarks inter alia the consolidation of his image of logical systems as games.
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Silva, M. (2017). Wittgenstein on Contradiction and Contrariety: Four Turning Points in the Development of his Philosophy of Logic. In: Silva, M. (eds) Colours in the development of Wittgenstein’s Philosophy. Palgrave Macmillan, Cham. https://doi.org/10.1007/978-3-319-56919-2_8
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