Ratio Juris 25 (3):271-300 (2012)

Authors
Fabrizio Macagno
Universidade Nova de Lisboa
Douglas Walton
University of Windsor
Abstract
In this paper a theoretical definition that helps to explain how the logical structure of legal presumptions is constructed by applying the Carneades model of argumentation developed in artificial intelligence. Using this model, it is shown how presumptions work as devices used in evidentiary reasoning in law in the event of a lack of evidence to assist a chain of reasoning to move forward to prove or disprove a claim. It is shown how presumptions work as practical devices that may be useful in cases in which there is insufficient evidence to prove the claim to an appropriate standard of proof
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DOI 10.1111/j.1467-9337.2012.00514.x
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References found in this work BETA

Argumentation Schemes.Douglas Walton, Chris Reed & Fabrizio Macagno - 2008 - Cambridge and New York: Cambridge University Press.
The New Rhetoric: A Treatise on Argumentation.Chaïm Perelman - 1969 - Notre Dame, [Ind.]University of Notre Dame Press.
The New Rhetoric: A Treatise on Argumentation.Chaïm Perelman & Lucie Olbrechts-Tyteca - 1969 - Notre Dame, IN, USA: Notre Dame University Press.

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