The Current Agenda of Argumentation Theory. Talk at New University of Lisbon, February 10, 2010, 11:00 am, Room 1.05, Building I&D. Web page with pdf papers: http://dougwalton.ca. Douglas Walton: University of Windsor Assumption Chair in Argumentation Studies
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Talk at New University of Lisbon, February 10, 2010, 11:00 am, Room 1.05, Building I&D.
Web page with pdf papers: http://dougwalton.ca
Douglas Walton: University of Windsor
Assumption Chair in Argumentation Studies
Distinguished Research Fellow of CRRAR
Centre for Research in Reasoning, Argumentation & Rhetoric
Wigmore (1931, p. 20) considered arguments of a kind that are commonly used in collecting evidence in law.
Last week the witness A had a quarrel with the defendant B, therefore A is probably biased against B.
A was found with a bloody knife in B’s house, therefore A is probably the murderer of B.
Clue: Backward Reasoning by Explanation?
Fraunhofer FOKUSThe Carneades Model of Argument
Salmon sold medicines in London. M’Kensie bought from him some pills for rheumatism; after numerous doses he died. The medical men, on a postmortem examination, affirmed that certain ingredients of these pills had caused his death; and Salmon was indicted for manslaughter. But on the trial he produced many witnesses, who had taken the same kind of pills with much benefit; one witness affirmed that he had taken twenty thousand of them within the past two years, to his great benefit! If these circumstances were true, the inference was inevitable that the pills were not lethal. But was the testimony to this circumstance true?
Event Taken as Factual by Both Parties
Something Perplexing to Respondent about Event
Explanation Dialogue Concluded
Respondent asks Proponent for Help in Understanding
Proponent Offers Explanation AttemptExplanation in a Sequence of Dialogue