In a recent paper, Cayirlioglu et al. report that the disruption of a specific miRNA, miR‐279, which normally acts to inhibit the transcription factor Nerfin‐1, uncovers a population of hybrid CO2 neurons in the Drosophila maxillary palp.1 Normally, fruit fly CO2 neurons are found only in the antennae, while mosquito CO2 neurons are found only in the maxillary palps. The hybrid neurons in this miRNA mutant may, thus, recapitulate an evolutionary intermediate unseen since the divergence of these two dipteran lineages (...) over 250 million years ago. BioEssays 30:621–623, 2008. © 2008 Wiley Periodicals, Inc. (shrink)

There are two views of the ad hominem argument found in the textbooks and other traditional treatments of this argument, the Lockean or ex concessis view and the view of ad hominem as personal attack. This article addresses problems posed by this ambiguity. In particular, it discusses the problem of whether Aristotle's description of the ex concessis type of argument should count as evidence that he had identified the circumstantial ad hominem argument. Argumentation schemes are used as the basis for (...) drawing a distinction between this latter form of argument and another called argument from commitment, corresponding to the ex concessis argument. (shrink)

This paper explains how to use a new software tool for argument diagramming available free on the Internet, showing especially how it can be used in the classroom to enhance critical thinking in philosophy. The user loads a text file containing an argument into a box on the computer interface, and then creates an argument diagram by dragging lines from one node to another. A key feature is the support for argumentation schemes, common patterns of defeasible reasoning historically know as (...) topics . Several examples are presented, as well as the results of an experiment in using the system with students in a university classroom. (shrink)

The aim of this investigation is to explore the role of argumentation schemes in enthymeme reconstruction. This aim is pursued by studying selected cases of incomplete arguments in natural language discourse to see what the requirements are for filling in the unstated premises and conclusions in some systematic and useful way. Some of these cases are best handled using deductive tools, while others respond best to an analysis based on defeasible argumentations schemes. The approach is also shown to work reasonably (...) well for weak arguments, a class of arguments that has always been difficult to analyze without the principle of charity producing a straw man. (shrink)

Robert Kimball, in “What’s Wrong with Argumentum Ad Baculum?” (Argumentation, 2006) argues that dialogue-based models of rational argumentation do not satisfactorily account for what is objectionable about more malicious uses of threats encountered in some ad baculum arguments. We review the dialogue-based approach to argumentum ad baculum, and show how it can offer more than Kimball thinks for analyzing such threat arguments and ad baculum fallacies.

This talk surveys a number of methods currently being developed that assist in applying logic to the evaluation of arguments used in particular cases. A case is seen as specified by a given text and context of discourse. The methods used are pragmatic, and are based on the Gricean Cooperative Principle , as implemented in several types of goal-directed conversational exchanges.

This paper looks into the known evidence on the origins of the type of argument called the circumstantial ad hominemargument in modern logic textbooks, and introduces some new evidence. This new evidence comes primarily from recent historical work by Jaap Mansfeld and Jonathan Barnes citing many cases where philosophers in the ancient world were attacked on the grounds that their personal actions failed to be consistent with their philosophical teachings. On the total body of evidence, two hypotheses about the roots (...) of the circumstantial ad hominem are considered. One is that it came from Aristotle through Locke. The other is that it may have had separate roots in these ancient philosophical writings that criticized philosophers for not practicing what they preached. (shrink)

This handbook offers a deep analysis of the main forms of legal reasoning and argumentation from both a logical-philosophical and legal perspective. These forms are covered in an exhaustive and critical fashion, and the handbook accordingly divides in three parts: the first one introduces and discusses the basic concepts of practical reasoning. The second one discusses the main general forms of reasoning and argumentation relevant for legal discourse. The third one looks at their application in law as well as at (...) the different areas of legal reasoning. The handbook’s division in three parts reflects its conceptual architecture, since legal reasoning and argumentation are considered in relation to the more general types of reasoning. (shrink)

This handbook offers a deep analysis of the main forms of legal reasoning and argumentation from both a logical-philosophical and legal perspective. These forms are covered in an exhaustive and critical fashion, and the handbook accordingly divides in three parts: the first one introduces and discusses the basic concepts of practical reasoning. The second one discusses the main general forms of reasoning and argumentation relevant for legal discourse. The third one looks at their application in law as well as at (...) the different areas of legal reasoning. The handbook’s division in three parts reflects its conceptual architecture, since legal reasoning and argumentation are considered in relation to the more general types of reasoning. (shrink)

We provide a retrospective of 25 years of the International Conference on AI and Law, which was first held in 1987. Fifty papers have been selected from the thirteen conferences and each of them is described in a short subsection individually written by one of the 24 authors. These subsections attempt to place the paper discussed in the context of the development of AI and Law, while often offering some personal reactions and reflections. As a whole, the subsections build into (...) a history of the last quarter century of the field, and provide some insights into where it has come from, where it is now, and where it might go. (shrink)

SummaryThis paper studies some classic cases of the fallacy of begging the question based on appeals to testimony containing circular reasoning. For example, suppose agents a, b and c vouch for d’s credentials, and agents b, d, and e vouch for a’s credentials. Such a sequence of reasoning is circular because a is offering testimony for d but d is offering testimony for a. The paper formulates and evaluates restrictions on the use of testimonial evidence that might be used to (...) deal with such problematic arguments. One is called the Non-repeater Rule: in an extended sequence of argumentation based on testimony, once a source x has been appealed to at any given point in the sequence, that same source x must never be appealed to again at any next point in the same sequence. (shrink)

This paper uses argumentation tools such as argument diagrams and argumentation schemes to analyze four examples of argument from analogy, and argues that to proceed from there to evaluating these arguments, features of the context of dialogue need to be taken into account. The evidence drawn from these examples is taken to support a pragmatic approach to studying argument from analogy, meaning that identifying the logical form of the argument by building an argument diagram of the premises and conclusion is (...) not by itself sufficient for argument evaluation. To get further, it is argued, the argument evaluator needs to take into account how this particular argument was used in context to support a conversational goal.Cet article utilise des outils d'argumentation tels que des diagrammes d'argument et des schèmes d'argumentation pour analyser trois exemples d'argument par analogie, et soutient que pour évaluer ces arguments de manière adéquate, il est nécessaire de tenir compte du contexte d'utilisation de l'argument. Ces exemples suggèrent que l’étude des arguments par analogie à partir de seulement l’identification de leur forme logique n'est pas adéquate. Pour aller plus loin, on avance que l'analyste d'argument doit prendre en compte comment un argument particulier a été utilisé dans un contexte pour soutenir un but conversationnel. (shrink)

https://revistes.uab.cat/enrahonar/article/view/v57-walton.

Les séjours d’étude à l’étranger se sont développés après la Seconde Guerre mondiale. Plus que d’autres formes de voyage, ils permettent aux jeunes adultes de s’immerger dans la culture et le quotidien d’un autre pays. Les jeunes femmes américaines qui ont étudié en France entre la fin des années 1940 et les années 1960 ont été marquées par les stéréotypes de genre et les pratiques sociales et sexuelles auxquels elles ont été confrontées. S’appuyant sur des entretiens oraux avec d’anciennes étudiantes (...) et sur des lettres envoyées alors aux familles, cet article examine la manière dont ces Américaines ont négocié les différences culturelles, pour évaluer certains aspects de la culture française et se forger une identité individuelle plus indépendante et plus assurée. (shrink)

Les séjours d’étude à l’étranger se sont développés après la Seconde Guerre mondiale. Plus que d’autres formes de voyage, ils permettent aux jeunes adultes de s’immerger dans la culture et le quotidien d’un autre pays. Les jeunes femmes américaines qui ont étudié en France entre la fin des années 1940 et les années 1960 ont été marquées par les stéréotypes de genre et les pratiques sociales et sexuelles auxquels elles ont été confrontées. S’appuyant sur des entretiens oraux avec d’anciennes étudiantes (...) et sur des lettres envoyées alors aux familles, cet article examine la manière dont ces Américaines ont négocié les différences culturelles, pour évaluer certains aspects de la culture française et se forger une identité individuelle plus indépendante et plus assurée. (shrink)

All too often, the study of ineffability only looks on the bright side of life—mystical experiences of blissful unity, primordial grounds of overflowing fecundity, noetic truths of existential profundity. To some extent, this is true too for Mélanie V. Walton’s Expressing the Inexpressible in Lyotard and Pseudo-Dionysius: Bearing Witness as Spiritual Exercise, which turns to a “desperate love letter to God” —the eros-infused naming and unnaming of God in The Divine Names, a treatise by the sixth-century Neoplatonic-Christian Pseudo-Dionysius the (...) Areopagite—for a means by which a Holocaust survivor might confront a Holocaust denier. Still, that the Holocaust features at all in a religio-philosophical book on ineffability might help give an otherwise lofty field of inquiry a much-needed grounding.It is difficult to put Walton’s thesis succinctly: Expressing the Inexpressible in Lyotard and Pseudo-Dionysius is a multi-faceted work with several theses. To begin with, there is the pro .. (shrink)

There is a history of thinking that photographs provide a special kind of access to the objects depicted in them, beyond the access that would be provided by a painting or drawing. What is included in the photograph does not depend on the photographer’s beliefs about what is in front of the camera. This feature leads Kendall Walton to argue that photographs literally allow us to see the objects which appear in them. Current generative algorithms produce images in response (...) to users’ text prompts. Depending on the parameters, the output can resemble specific people or things which are named in the prompt. This resemblance does not depend on the user’s beliefs, so generated images are in this sense like photographs. Given this parallel, how should we think about AI-generated images? (shrink)

Building upon the role values take in Walton’s theory of practical reasoning, this paper will frame the question of how values should be evaluated into the broader question of what reasonable practical argumentation is. The thesis argued for is that if a positive evaluation of practical reasoning argumentation requires that the argument avoid a morally negative conclusion, then the role of values should be given a central, rather than supportive, position in practical argument evaluation.