Informal Logic 20 (2) (2000)

Informal logic is a new sub-discipline of philosophy, roughly definable as the philosophy of argument. Contributors have challenged the traditional concept of an argument as a premiss-conclusion complex, in favour of speech-act, functional and dialogical conceptions; they have identified as additional components warrants, modal qualifiers, rebuttals, and a dialectical tier. They have objected that "soundness" is neither necessary nor sufficient for a good argument. Alternative proposals include acceptability, relevance and sufficiency of the premisses; conformity to a valid argument schema; conformity to rules for discussion aimed at rational resolution of a dispute. Informal logic is a significant part of philosophy
Keywords informal logic, philosophy, argument, evaluation, dialogue, acceptability, relevance, sufficiency, argumentation schema, fallacies
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References found in this work BETA

Speech Acts: An Essay in the Philosophy of Language.John Rogers Searle - 1969 - Cambridge, England: Cambridge University Press.
Speech Acts: An Essay in the Philosophy of Language.William P. Alston - 1970 - Philosophical Quarterly 20 (79):172-179.
Speech Acts: An Essay in the Philosophy of Language.John Searle - 1969 - Philosophy and Rhetoric 4 (1):59-61.
The Uses of Argument.Stephen E. Toulmin - 1958 - Philosophy 34 (130):244-245.

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Making Sense of “Informal Logic”.Ralph H. Johnson - 2006 - Informal Logic 26 (3):231-258.
Some Reflections on the Informal Logic Initiative.Ralph H. Johnson - 2009 - Studies in Logic, Grammar and Rhetoric 16 (29).

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