文章基本信息

标题：Formal Logic for Informal Logicians
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作者：David Sherry
期刊名称：Informal Logic
印刷版ISSN：0824-2577
出版年度：2006
卷号：26
期号：2
页码：199-220
语种：English
出版社：Informal Logic
摘要：Classical logic yields counterintuitive results for numerous propositional argument forms. The usual alternatives (modal logic, relevance logic, etc.) generate counterintuitive results of their own. The counterintuitive results create problems—especially pedagogical problems—for informal logicians who wish to use formal logic to analyze ordinary argumentation. This paper presents a system, PL– (propositional logic minus the funny business), based on the idea that paradigmatic valid argument forms arise from justificatory or explanatory discourse. PL– avoids the pedagogical difficulties without sacrificing insight into argument.
关键词：discursive practice, propositional logic, paradoxes of material implication