On Arguments from Ignorance

Nonfallacious Arguments from Ignorance

THE argument from ignorance has traditionally been classified as a fallacy, but there is growing recognition that this kind of argument can be nonfallacious in some cases. This raises a question: what kind of successful or good argument is it, in these cases? In this paper two argumentation schemes to represent the form of the argumentum ad ignorantiam are introduced. It is argued that they are...

Profiles of Dialogue for Evaluating Arguments from Ignorance

The argument from ignorance is a hard type of argumentation to evaluate using the profile of dialogue as a tool, because parts of the argumentation are responses that do not occur in the sequence of exchanges. The argument from ignorance works as an inference because implications are drawn from what was not said. This feature poses a difficulty for the profile of dialogue method. And in fact, w...

On Ignorance and Contradiction

A critical view of the alleged significance of Belnap four-valued logic for reasoning under inconsistent and incomplete information is provided. The difficulty lies in the confusion between truth-values and information states, when reasoning about Boolean propositions. So our critique is along the lines of previous debates on the relevance of many-valued logics and especially of the extension o...

On Learned Ignorance

analysis of ignorance from future signs based on semiotics

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