1. Can Cogency Vanish?Gilbert Plumer - 2016 - Cogency: Journal of Reasoning and Argumentation 8 (1):89-109.
    This paper considers whether universally—for all (known) rational beings—an argument scheme or pattern can go from being cogent (well-reasoned) to fallacious. This question has previously received little attention, despite the centrality of the concepts of cogency, scheme, and fallaciousness. I argue that cogency has vanished in this way for the following scheme, a common type of impersonal means-end reasoning: X is needed as a basic necessity or protection of human lives, therefore, X ought to be secured if possible. As it (...)
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  2. A Method for Evaluation of Arguments From Analogy.Bo R. Meinertsen - 2016 - Cogency: Journal of Reasoning and Argumentation 7 (2):109-123.
    It is a common view that arguments from analogy can only be evaluated on a case-by-case basis. However, while this reflects an important insight, I propose instead a relatively simple method for their evaluation based on just (i) their general form and (ii) four core questions. One clear advantage of this proposal is that it does not depend on any substantial (and controversial) view of similarity, unlike influential current alternative methods, such as Walton’s. Following some initial clarification of the notion (...)
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