LOGIC, REASONING, ARGUMENTATION: Insights from the Wild
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Defeasibility from the Perspective of Informal Logic
University of Windsor Scholarship at UWindsor OSSA Conference Archive OSSA 10 May 22nd, 9:00 AM - May 25th, 5:00 PM Defeasibility from the perspective of informal logic Ralph H. Johnson University of Windsor, Centre for Research in Reasoning, Argumentation and Rhetoric Follow this and additional works at: https://scholar.uwindsor.ca/ossaarchive Part of the Philosophy Commons Johnson, Ralph H., "Defeasibility from the perspective of informal logic" (2013). OSSA Conference Archive. 84. https://scholar.uwindsor.ca/ossaarchive/OSSA10/papersandcommentaries/84 This Paper is brought to you for free and open access by the Conferences and Conference Proceedings at Scholarship at UWindsor. It has been accepted for inclusion in OSSA Conference Archive by an authorized conference organizer of Scholarship at UWindsor. For more information, please contact [email protected]. Defeasibility from the perspective of informal logic RALPH H. JOHNSON Centre for Research in Reasoning, Argumentation and Rhetoric University of Windsor 401 Sunset Ave, Windsor, Ontario Canada [email protected] ABSTRACT: The notions of defeasibility and defeasible reasoning have generated a great deal of interest in various research communities. Here I want to focus on their use in logic and argumentation studies. I will approach these topics from the perspective of an informal logician who finds himself struggling with some issues that surround the idea of and the deployment of the concept of defeasibility. My intention is to make those struggles as clear as I can. KEYWORDS: deductive, defeasible, defeasibility, Pollock, undercutting defeater, rebutting defeater, Informal Logic Initiative 1. INTRODUCTION The notions of defeasibility and defeasible reasoning have generated a great deal of interest in various research communities. -
299 Abelson, RP, 66 Abductive Argument Argumentation Scheme For
Cambridge University Press 978-1-107-03930-8 - Methods of Argumentation Douglas Walton Index More information Index Abelson, R.P., 66 Anchored narrative, 137 , 163 Abductive argument Appeal to authority, 216–17 argumentation scheme for, 162 Appeal to expert opinion, 216 , 221 critical questions for, 162 Appeal to the people, see Fallacy of Abductive reasoning, 111 , 160 , 187–88 argument from popular opinion argumentation scheme for, 84 , 206 Araucaria, 15 , 16 , 99 critical questions for, 84 compared, 19–20 modeling with, 160–61 described, 12–13 Abortion case, 143–44 , 148 ArguMed, 16 , 17 Abstract argumentation framework, comparison, 20 35–36 Argument defi ned, 33 attack, 27 , 42 , 53 , 55 , 78 Action-based alternating transition back and forth exchange, 92 system, 156 composition, 46 , 48 , 90 ACTOS example, 1 , 20 defi nition, 48 , 88 , 89 critical questions, 15–16 defeasible, 7 , 30 , 227 , 229 , 246–47 explained, 14 open-ended, 238 Ad hominem argument, 50 , 159 , 234 evaluated, 33 defi ned, 96 identifying, 94–97 requirements of, 97 requirements for identifying, 89–90 types of, 118 Argument diagram, 72 , 255–56 , 259 Ad hominem attack, 235 composition of, 10 Ad verecundiam fallacy, 274 Argument from analogy, 42 , 114 , 139 , Affi davit example, 44–45 143 , 146 Agent argumentation scheme for, 122 , 145 described, 101 core, 126 , 130–31 , 149 desires and beliefs, 5 derived scheme, 130–31 Aiken, S., 281 simplest, 126 , 147–49 , 151–52 Airline fl ight schedule, 244 single respect scheme, 128 , 149–50 Ali, S., 104 version 1 , 141 , 142 -
Argumentation Theory and Practical Discourse
Ulrich's Bimonthly 1 Werner Ulrich's Home Page: Ulrich's Bimonthly Formerly "Picture of the Month" November-December 2009 Reflections on Reflective Practice (6b/7) HOME Part 6b: Argumentation theory and practical discourse – Habermas 2 Previous | Next WER NER ULRICH'S BIO We are still engaged in an effort to review the practical philosophies of For a hyperlinked overview of all issues of "Ulrich's PUBLICATIONS Aristotle, Kant, and Habermas, to see what we can learn from them for the Bimonthly" and the previous "Picture of the Month" series, READINGS ON CSH purpose of grounding reflective practice philosophically. The discussions of see the site map DOWNLOADS Aristotle and Kant were detailed but still found place within a single essay PDF file HARD COPIES each. The current discussion of Habermas, however, takes more space and I CRITICAL SYSTEMS have therefore decided to split it into three parts (see the right-hand note). HEURISTICS (CSH) Note: This is the second of three parts reviewing the Before we continue with the second part, it may help returning readers if I CST FOR PROFESSIONALS implications of the work of & CITIZENS briefly sum up where we stand; should you be new to the Bimonthly, I Habermas for reflective professional practice. The first A TRIBUTE TO C.W. CHURCHMAN recommend you read the previous Part 6a/7 to facilitate your reading of the part appeared in the Bimonthly of September-October 2009; LUG ANO SUMMER SCHOOL present Part 6b/7 (click on the "Previous" button at the top right of this page). the third and concluding part is planned for a later ULRICH'S BIMONTHLY Bimonthly. -
Bootstrapping, Defeasible Reasoning, Anda Priorijustification
PHILOSOPHICAL PERSPECTIVES Philosophical Perspectives, 24, Epistemology, 2010 BOOTSTRAPPING, DEFEASIBLE REASONING, AND APRIORIJUSTIFICATION Stewart Cohen The University of Arizona What is the relationship between (rationally) justified perceptual belief and (rationally) justified belief in the reliability of perception? A familiar argument has it that this relationship makes perceptual justification impossible. For on the one hand, pre-theoretically it seems reasonable to suppose: (1) We cannot have justified perceptual beliefs without having a prior justified belief that perception is reliable. If we are not justified in believing perception is reliable, then how can we trust its deliverances? On the other hand, it seems reasonable to suppose: (2) We cannot be justified in believing perception is reliable without having prior justified perceptual beliefs. It is a contingent matter whether perception is reliable. So how else could we be justified in believing perception is reliable other than by empirical investigation?1 Combining these two suppositions yields the disastrous result that we need justified perceptual beliefs prior to having justified perceptual beliefs. Unless we are content with a skeptical result, these two suppositions need to be reconsidered. Some theorists have elected to retain (1) and deny (2), by arguing that we have apriorijustification for believing perception is reliable.2 Others have elected to retain (2) and deny (1), allowing that we can have justified perceptual beliefs without having justification for believing perception is reliable.3 Denying (1) yields what I will call “basic justification” or “basic justified beliefs” — justified beliefs that are obtained without prior justification for believing that the processes that produces them are reliable. -
Understanding Students' Reasoning
Understanding Students’ Reasoning: Argumentation Schemes as an Interpretation Method in Science Education Aikaterini Konstantinidou & Fabrizio Macagno Science & Education Contributions from History, Philosophy and Sociology of Science and Mathematics ISSN 0926-7220 Sci & Educ DOI 10.1007/s11191-012-9564-3 1 23 Your article is protected by copyright and all rights are held exclusively by Springer Science +Business Media Dordrecht. This e-offprint is for personal use only and shall not be self- archived in electronic repositories. If you wish to self-archive your work, please use the accepted author’s version for posting to your own website or your institution’s repository. You may further deposit the accepted author’s version on a funder’s repository at a funder’s request, provided it is not made publicly available until 12 months after publication. 1 23 Author's personal copy Sci & Educ DOI 10.1007/s11191-012-9564-3 Understanding Students’ Reasoning: Argumentation Schemes as an Interpretation Method in Science Education Aikaterini Konstantinidou • Fabrizio Macagno Ó Springer Science+Business Media Dordrecht 2012 Abstract The purpose of this paper is to investigate the argumentative structure of students’ arguments using argumentation schemes as an instrument for reconstructing the missing premises underlying their reasoning. Building on the recent literature in science education, in order for an explanation to be persuasive and achieve a conceptual change it needs to proceed from the interlocutor’s background knowledge to the analysis of the unknown or wrongly interpreted phenomena. Argumentation schemes represent the abstract forms of the most used and common forms of human reasoning, combining logical principles with semantic concepts. -
From Logic to Rhetoric: a Contextualized Pedagogy for Fallacies
Current Issue From the Editors Weblog Editorial Board Editorial Policy Submissions Archives Accessibility Search Composition Forum 32, Fall 2015 From Logic to Rhetoric: A Contextualized Pedagogy for Fallacies Anne-Marie Womack Abstract: This article reenvisions fallacies for composition classrooms by situating them within rhetorical practices. Fallacies are not formal errors in logic but rather persuasive failures in rhetoric. I argue fallacies are directly linked to successful rhetorical strategies and pose the visual organizer of the Venn diagram to demonstrate that claims can achieve both success and failure based on audience and context. For example, strong analogy overlaps false analogy and useful appeal to pathos overlaps manipulative emotional appeal. To advance this argument, I examine recent changes in fallacies theory, critique a-rhetorical textbook approaches, contextualize fallacies within the history and theory of rhetoric, and describe a methodology for rhetorically reclaiming these terms. Today, fallacy instruction in the teaching of written argument largely follows two paths: teachers elevate fallacies as almost mathematical formulas for errors or exclude them because they don’t fit into rhetorical curriculum. Both responses place fallacies outside the realm of rhetorical inquiry. Fallacies, though, are not as clear-cut as the current practice of spotting them might suggest. Instead, they rely on the rhetorical situation. Just as it is an argument to create a fallacy, it is an argument to name a fallacy. This article describes an approach in which students must justify naming claims as successful strategies and/or fallacies, a process that demands writing about contexts and audiences rather than simply linking terms to obviously weak statements. -
Evidence Graphs: Supporting Transparent and FAIR Computation, with Defeasible Reasoning on Data, Methods and Results
bioRxiv preprint doi: https://doi.org/10.1101/2021.03.29.437561; this version posted March 30, 2021. The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under aCC-BY 4.0 International license. Evidence Graphs: Supporting Transparent and FAIR Computation, with Defeasible Reasoning on Data, Methods and Results Sadnan Al Manir1 [0000-0003-4647-3877], Justin Niestroy1 [0000-0002-1103-3882], Maxwell Adam Levinson1 [0000-0003-0384-8499], and Timothy Clark1,2 [0000-0003-4060-7360]* 1 University of Virginia, School of Medicine, Charlottesville VA USA 2 University of Virginia, School of Data Science, Charlottesville VA USA [email protected] *Corresponding author: [email protected] Abstract. Introduction: Transparency of computation is a requirement for assessing the va- lidity of computed results and research claims based upon them; and it is essential for access to, assessment, and reuse of computational components. These com- ponents may be subject to methodological or other challenges over time. While reference to archived software and/or data is increasingly common in publica- tions, a single machine-interpretable, integrative representation of how results were derived, that supports defeasible reasoning, has been absent. Methods: We developed the Evidence Graph Ontology, EVI, in OWL 2, with a set of inference rules, to provide deep representations of supporting and challeng- ing evidence for computations, services, software, data, and results, across arbi- trarily deep networks of computations, in connected or fully distinct processes. EVI integrates FAIR practices on data and software, with important concepts from provenance models, and argumentation theory. -
John P. Burgess Department of Philosophy Princeton University Princeton, NJ 08544-1006, USA [email protected]
John P. Burgess Department of Philosophy Princeton University Princeton, NJ 08544-1006, USA [email protected] LOGIC & PHILOSOPHICAL METHODOLOGY Introduction For present purposes “logic” will be understood to mean the subject whose development is described in Kneale & Kneale [1961] and of which a concise history is given in Scholz [1961]. As the terminological discussion at the beginning of the latter reference makes clear, this subject has at different times been known by different names, “analytics” and “organon” and “dialectic”, while inversely the name “logic” has at different times been applied much more broadly and loosely than it will be here. At certain times and in certain places — perhaps especially in Germany from the days of Kant through the days of Hegel — the label has come to be used so very broadly and loosely as to threaten to take in nearly the whole of metaphysics and epistemology. Logic in our sense has often been distinguished from “logic” in other, sometimes unmanageably broad and loose, senses by adding the adjectives “formal” or “deductive”. The scope of the art and science of logic, once one gets beyond elementary logic of the kind covered in introductory textbooks, is indicated by two other standard references, the Handbooks of mathematical and philosophical logic, Barwise [1977] and Gabbay & Guenthner [1983-89], though the latter includes also parts that are identified as applications of logic rather than logic proper. The term “philosophical logic” as currently used, for instance, in the Journal of Philosophical Logic, is a near-synonym for “nonclassical logic”. There is an older use of the term as a near-synonym for “philosophy of language”. -
Developments in Argumentation Theory
Developments in Argumentation Theory Frans H van Eemeren and Rob Grootendorst, University of Amsterdam Abstract In this paper, a survey is provided of the state of the art in argumentation theory. Some of the most significant approaches of the past two decades are discussed: Informal Logic, the formal theory of fallacies, formal dialectics, pragma-dialectics, Radical Argumentativism, and the modem revival of rhetoric. The survey is based not only on books, but also on papers published in professional joumals or included in conference proceedings. 1. Introduction Argumentation is a speech act complex aimed at resolving a difference of opinion. According to a prominent handbook definition, it is a verbal and social activity of reason carried out by a speaker or writer concerned with increasing (or decreasing) the acceptability of a controversial standpoint for a listener or reader; the con stellation of propositions brought to bear in this endeavour is intended to justify (or refute) the standpoint before a rational judge.\ Argumentation theory is the name given to the (systematic results of the) study of this discourse phenomenon. Argumentation theory studies the production, analysis and evaluation of argumen tation with a view of developing adequate criteria for determining the validity of the point of departure and presentational layout of argumentative discourse. The constellation of propositions advanced in argumentation is often referred to by the term argument, particularly by logicians and philosophers. This may lead to confusion because (in English) the word 'argument' has various meanings. Apart from (a) a reason and (b) a logical inference of a conclusion from one or more premisses, 'argument' can also denote (c) a discussion and (d) a quarrel. -
What Should a Normative Theory of Argumentation Look Like?
University of Windsor Scholarship at UWindsor OSSA Conference Archive OSSA 11 May 18th, 9:00 AM - May 21st, 5:00 PM What should a normative theory of argumentation look like? Lilian Bermejo-Luque Follow this and additional works at: https://scholar.uwindsor.ca/ossaarchive Part of the Philosophy Commons Bermejo-Luque, Lilian, "What should a normative theory of argumentation look like?" (2016). OSSA Conference Archive. 122. https://scholar.uwindsor.ca/ossaarchive/OSSA11/papersandcommentaries/122 This Paper is brought to you for free and open access by the Conferences and Conference Proceedings at Scholarship at UWindsor. It has been accepted for inclusion in OSSA Conference Archive by an authorized conference organizer of Scholarship at UWindsor. For more information, please contact [email protected]. What Should a Normative Theory of Argumentation Look Like? LILIAN BERMEJO-LUQUE Department of Philosophy I University of Granada Edificio de Psicología. Campus de Cartuja, s/n. Granada 18071 Spain [email protected] Abstract: Even if we identify the goals of normative theories of argumentation with the goals of a theory of justification, we can either focus on the conditions for considering that a target-claim is justified, or on characterizing justification from the point of view of the practice of arguing. I analyze the rewards and shortcomings of both views and their corresponding criteriological and transcendental accounts of the sort of objectivity that good argumentation is able to provide. Keywords: criteriological conception, justification LNMA, rationality, reasonableness, reasons, transcendental conception, wrong kind of reasons problem 1. Introduction Is arguing well always something reasonable, rational or justified? I would like to answer this question by considering two ways of thinking of the relationship between argumentation and reasonableness/ rationality/ justification that mirror two very different views about what a theory of argumentation should look like. -
1 Argumentation in the Framework of Deliberation
1 ARGUMENTATION IN THE FRAMEWORK OF DELIBERATION DIALOGUE Douglas Walton, Katie Atkinson, Trevor Bench-Capon, Adam Wyner and Dan Cartwright According to argumentation theory, reasoning takes place in different types of dialogue: persuasion dialogue, negotiation, deliberation, information-seeking dialogue, inquiry, and eristic dialogue. These different dialogue types may be nested within one another. Current research in artificial intelligence is building formal models corresponding to each of these types of dialogue and showing how they can be implemented in, for example, multi-agent communications systems. In this paper, we (1) clarify the distinction between deliberation dialogue and persuasion dialogue, (2) survey some recent research in artificial intelligence studying formal properties of deliberation dialogue, (3) present a model of argumentation in deliberation dialogue that has proved to be useful in electronic democracy, and (4) argue that this model provides an attractive alternative to the dominant cost-benefit model of rational argumentation traditionally accepted in economics and other fields as the basis for evaluating argumentation of the kind used in policy decision making. One of the most important lessons of argumentation theory has been that arguments need to be analyzed and evaluated not only by identifying the logical form of an argument in abstraction from its context of use, but also by paying attention to the purpose for which an argument was supposedly used in a conversational setting. In particular, as we will show in this paper, it is vitally important to distinguish between two different types of conversational frameworks called persuasion dialogue and deliberation dialogue. As we will show, logical fallacies can easily be committed in the most common kinds of everyday reasoning by failing to take this distinction into account. -
Discourse Relations and Defeasible Knowledge`
DISCOURSE RELATIONS AND DEFEASIBLE KNOWLEDGE* Alex Lascarides t Nicholas Asher Human Communication Research Centre Center for Cognitive Science University of Edinburgh University of Texas 2 Buccleuch Place, Edinburgh, EH8 9LW Austin, Texas 78712 Scotland USA alex@uk, ac. ed. cogsc£ asher@sygmund, cgs. utexas, edu Abstract of the event described in a, i.e. fl's event is part of the preparatory phase of a's: 2 This paper presents a formal account of the temporal interpretation of text. The distinct nat- (2) The council built the bridge. The architect ural interpretations of texts with similar syntax drew up the plans. are explained in terms of defeasible rules charac- terising causal laws and Gricean-style pragmatic Explanation(a, fl): For example the event de- maxims. Intuitively compelling patterns of defea,- scribed in clause fl caused the event described in sible entailment that are supported by the logic clause a: in which the theory is expressed are shown to un- derly temporal interpretation. (3) Max fell. John pushed him. Background(a, fl): For example the state de- The Problem scribed in fl is the 'backdrop' or circumstances under which the event in a occurred (so the event and state temporally overlap): The temporal interpretation of text involves an account of how the events described are related (4) Max opened the door. The room was pitch to each other. These relations follow from the dark. discourse relations that are central to temporal import. 1 Some of these are listed below, where Result(a, fl): The event described in a caused the clause a appears in the text before fl: the event or state described in fl: Narration(a,fl): The event described in fl is a consequence of (but not necessarily caused by) (5) Max switched off the light.