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Is 'invalid deductive argument' an Oxymoron?  

Hong, Jiho (Sungkyunkwan University, University College)
Yeo, Yeongseo (Dongduk Women's University, College of Liberal Arts and Sciences)
Publication Information
Korean Journal of Logic / v.22, no.1, 2019 , pp. 151-182 More about this Journal
Abstract
According to the realization criterion that distinguishes deductive argument from inductive argument, the realized necessity relation between the premises and the conclusion defines deductive argument. In this case, 'invalid deductive argument' is an oxymoron. According to the intention criterion, the intended necessity relation between the premises and the conclusion defines deductive argument. In this case, 'invalid deductive argument' is not an oxymoron. In this paper, we will argue for the intention criterion. The realization criterion cannot classify an elliptical argument without referring to the intention represented in the argument. It cannot distinguish an argument from a set of propositions that is not an argument either. On the other hand, the problem that an intention may not be recognized in an argument can be resolved by referring to the principle of charity. Moreover, by distinguishing the expressions showing the conviction or the attitude to the argument from the intention of the argument, we conclude that the intention criterion successfully distinguishes deductive argument from inductive argument.
Keywords
Invalid deductive argument; The distinction between deductive argument and inductive argument; The intention criterion; The realization criterion; Prof. Youngchul Lee;
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