Burden of Proof in a Modified Hamblin Dialogue System
University of Windsor
April 5, 2011
Informal Logic, Vol. 31, No. 4, pp. 279-304, 2011
In his book on fallacies, Hamblin built a very simple system for argumentation in dialogue he called the Why-Because System with Questions. In his discussion of this system, he replaced the concept of burden of proof with a simpler concept of initiative, which could be described as something like getting the upper hand as they argumentation moves back and forth in the dialogue between the one party and the other. No doubt he realized that the concept of burden of proof was too complex a matter to be dealt with in the limited scope of his chapter on formal dialogue systems. In this paper is shown how an extended version of Hamblin‟s dialogue system provides a nice way of modeling the phenomenon of shifting of burden of proof in a dialogue, yielding with a precise way of distinguishing between different kinds of burden of proof, and dealing with fallacies like the argumentum ad ignorantiam (argument from negative evidence).
Number of Pages in PDF File: 18
Keywords: formal dialogue systems, speech acts, shifting burden of proof, argument from ignoranceAccepted Paper Series
Date posted: April 5, 2012
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