This chapter focuses on one of the common fallacies in Western philosophy called 'equivocation'. Patrick Hurley writes that the fallacy of equivocation “occurs when the conclusion of an argument depends on the fact that the word or phrase is used, either explicitly or implicitly, in two different senses in the argument”. This fallacy happens often within discussions and debates concerning the alleged tension between science and religion. The best way to avoid this fallacy is to (...) take care to ensure that key terms, especially ones with multiple meanings, in our arguments are being used consistently; that is, that the words retain the same meaning throughout the argument. It is also important, for the sake of lucidity, to ensure that it is clear which meaning we intend to be using throughout our argument. (shrink)

ABSTRACT: This paper discusses the Stoic treatment of fallacies that are based on lexical ambiguities. It provides a detailed analysis of the relevant passages, lays bare textual and interpretative difficulties, explores what the Stoic view on the matter implies for their theory of language, and compares their view with Aristotle’s. In the paper I aim to show that, for the Stoics, fallacies of ambiguity are complexes of propositions and sentences and thus straddle the realms of meaning (which is the domain (...) of logic) and of linguistic expressions (which is the domain of linguistics), but also involve a pragmatic element; that the Stoics believe that the premises of the fallacies, when uttered, have only one meaning and are true, and thus should be conceded; that hence there is no need for a mental process of disambiguation in the listeners; that Aristotle, by contrast, appears to assume that the premises always have all their meanings, and accordingly recommends that the listeners explicitly disambiguate them, which presupposes a process of mental disambiguation. I proffer two readings of the Stoic advice that we ‘be silent’ when confronted with a fallacy of ambiguity in dialectical discourse, and explicate how each leads to an overall consistent interpretation of the textual evidence. Finally, I demonstrate that the method advocated by the Stoics works in all cases of fallacies of lexical ambiguity. (shrink)

In naturally occuring argumentation, words which play a crucial role in the argument often acquire different meanings on subsequent occasions of use. Traditionally, such semantic shifts have been dealt with by the ‘fallacy of equivocation’. In my paper, I would like to show that there is considerably more to semantic shifts during arguments than their potentially being fallacious. Based on an analysis of a debate on environmental policy, I will argue that shifts in meaning are produced by a (...) principle I call ‘local semantic elaboration’. I will go on to show that semantic shifts in the meaning of a word, the position advocated by a party, and the questions that the parties raise during an argumentative process are neatly tailored to one another, but can be incommensurable to the opponent's views. Semantic shifts thus may have a dissociative impact on a critical discussion. By linking the structure of argumentation to its pragmatics, however, it may be revealed that there are two practices that account for a higher order of coherence of the debate. The first practice is a general preference for disagreeing with the opponent, the second practice is the interpretation of local speech acts in terms of an overall ideological stance that is attributed to the speaker. Because of these practices, parties do not criticize divergent semantic conceptions as disruptive, but they treat them as characteristic and sometimes even metonymic reflections of the parties' positions. (shrink)

My One Fallacy theory says there is only one fallacy: equivocation, or playing on an ambiguity. In this paper I explain how this theory arose from rnetaphilosophical concerns. And I contrast this theory with purely logical, dialectical, and psychological notions of fallacy.

Much debate has surrounded "switching" scenarios in which a subject's reasoning is said to exhibit the fallacy of equivocation ( Burge 1988 ; Boghossian 1992, 1994 ). Peter Ludlow has argued that such scenarios are "epistemically prevalent" and, therefore, epistemically relevant alternatives ( Ludlow 1995a ). Since a distinctive feature of the cases in question is that the subject blamelessly engages in conceptual equivocation, we may label them 'equivocational switching cases'. Ludlow's influential argument occurs in a discussion (...) about compatibilism with regards to anti-individualism (or content externalism) and self-knowledge. However, the issue has wide-reaching consequences for many areas of epistemology. Arguably, the claim that equivocational switching cases are epistemically relevant may bear on the epistemology of inference, testimony, memory, group rationality and belief revision. Ludlow's argument proceeds from a now well-known "down to Earth" switching-case of a subject, Biff, who travels between the US and the UK. I argue that Ludlow's case-based argument fails to support the general claim that conceptual equivocational switching cases are prevalent and epistemically relevant. Thus, the discussion addresses the basis of some poorly understood issues regarding the epistemological consequences of anti-individualism. Simultaneously, the discussion is broadened from the narrow focus on self-knowledge. Finally, the critical discussion serves as the basis for some general reflections on epistemic relevance and the epistemic risks associated with conceptual equivocation. Specifically, I suggest that philosophy is an area where the risk of conceptual equivocation is extraordinarily high. (shrink)

Equivocation is often described as a fallacy. In this short note I argue that it is not a logical concept but an epistemic one. The argument of one who equivocates is not logically flawed, but it is unpersuasive in a very distinctive way.

Christopher Johnson argued in 'Reconsidering the Ad Hominem' that, in certain exceptional cases, appealing to ad hominem considerations is logically justifiable. My argument is that ad hominem considerations are no different than other evidential considerations. The evidential links may be strong, weak or nonexistent but there is nothing special in itself about considering ad hominem factors when weighing evidence. Like all the informal fallacies, simply because a claim has the signature of being 'ad hominem' does not make it irrelevant. The (...) apparent originality of Johnson's point lies in equivocating 'ad hominem fallacy' with 'ad hominem considerations'.It is not looking to personal characteristics or situations that in itself is illogical. It is when those features have no evidential link to the point at hand. (shrink)

The aim of this paper is to discuss Kripkc?s reasons for declaring the existence of both necessary a posteriori as well as contingent a priori statements, thus breaking the traditional extensional coincidence of the two pairs of concepts:necessary?contingent and a priori?a posteriori. As I shall argue, there is no reason, from Kripke?s work at least, to reject the usual picture of the topic The appeal ot his arguments rests on the ambiguity with which his expressions are used and on the (...) introduction o\ new senses for old notions. This does not mean, however, that all Knpke?s and Putnam?s intuitions on singular terms and natural kind nouns are wrong. Once Kripke?s ideas are properly uudeistood, they are much moreharmless then they are presented to be and they do not pose a threat to traditional relations relations between modal and epistemological categories. (shrink)

Many arguments that show p to be enthymematic (in an argument for q) rely on claims like “if one did not believe that p, one would not have a reason for believing that q.” Such arguments are susceptible to the neg-raising fallacy. We tend to interpret claims like “X does not believe that p” as statements of disbelief (X's belief that not-p) rather than as statements of withholding the belief that p. This article argues that there is a tendency (...) to equivocate in arguments for the enthymematicity of arguments (e.g., Lewis Carroll's paradox, Hume's problem) as well as in arguments for the enthymematicity of action explanations (e.g., arguments for psychologism and for explanatory individualism). The article concludes with a warning, because the equivocation is often helpful in teaching and because neg-raising verbs include philosophically vital verbs: desire, want, intend, think, suppose, imagine, expect, feel, seem, appear. (shrink)

This chapter contains sections titled: Threat Disguised as Reason Appeal to Inappropriate Authority Appeal to the Public Targeting the Person Accusing a Person of Hypocrisy The Appeal to Pity The Appeal to Ignorance The Use of Equivocal Language The Use of Amphiboly Conclusion.

This essay proposes and defends a general thesis concerning the nature of fallacies of reasoning. These in distinctive ways are all said to be deductively invalid. More importantly, the most accurate, complete and charitable reconstructions of these species and specimens of the informal fallacies are instructive with respect to the individual character of each distinct informal fallacy. Reconstructions of the fallacies as deductive invalidities are possible in every case, if deductivism is true, which means that in every case they (...) should be formalizable in an expressively comprehensive formal symbolic deductive logic. The general thesis is illustrated by a detailed examination of Walter Burleigh's paradox in his c. 1323 work, De Puritate Artis Logicae Tractatus Longior (Longer Treatise on the Purity of Logic), as a challenge to the deductive validity of hypothetical syllogism. The paradox has the form, ‹If I call you a swine, then I call you an animal; if I call you an animal, then I speak truly; therefore, if I call you a swine, then I speak truly'. Several solutions to the problem are considered, and the inference is exposed as an instance of the common deductive fallacy of equivocation. (shrink)

Paul (2014, 2015a) argues that one cannot rationally decide whether to have a transformative experience by trying to form judgments, in advance, about (i) what it would feel like to have that experience, and (ii) the subjective value of having such an experience. The problem is if you haven’t had the experience then you cannot know what it is like, and you need to know what it is like to assess its value. However, in earlier work I argued that ‘what (...) it is like’-knowledge comes in degrees, and I briefly suggested that, consequently, some instances of Paul’s argument schema might commit a fallacy of equivocation. The aim of this paper is to further explore and strengthen this objection by, first, offering a new argument—the modelling argument—in support of it, and then by evaluating a range of replies that might be given to this objection on Paul’s behalf. I conclude that each reply either fails or, at best, only partially succeeds in defending some but not all instances of Paul’s argument schema. In closing, I consider how we might revise Paul’s concepts of transformative experiences and choices in response to this conclusion. (shrink)

This paper argues for the validity of inferences that take the form of: A is more X than B; therefore A and B are both X. After considering representative counterexamples, it is claimed that these inferences are valid if and only if the comparative terms in the inference are taken from no more than one comparative set, where a comparative set is understood to be comprised of a positive, comparative, and superlative, represented as {X, more X than, most X}. In (...) all instances where arguments appearing to be of this form are invalid, it is the case that the argument has fallaciously taken terms from more than one comparative set. The fallacy of appealing to more than one comparative set in an inference involving comparative terms is shown to be analogous to the fallacy of equivocation in argumentation. The paper concludes by suggesting a conflation of logical issues with grammatical issues is the core difficulty leading some to consider inferences in the form of A is more X than B; therefore A and B are X to be invalid. (shrink)

The author designed the Reasoning Analysis Test to provide empirical support for the CRM analysis of informal fallacies. While informal, the results provide presumptive evidence that those committing informal fallacies may tacitly reason as predicted by CRM. Davis has argued persuasively that Gricean theory has not lived up to expectations, In light of his critique, the CRM analyses of Begging the Question and Equivocation are amended. Johnson has provided standards for judging any theory of informal fallacies. It is argued (...) that CRM survives the Standard Critique and sufficiently meets Johnson's other criteria. (shrink)

In this paper I will attempt a unified analysis of the various examples of the fallacy of accident given by Aristotle in the Sophistical Refutations. In many cases the examples underdetermine the fallacy and it is not trivial to identify the fallacy committed. To make this identification we have to find some error common to all the examples and to show that this error would still be committed even if those other fallacies that the examples exemplify were (...) not. Aristotle says that there is only one solution “against the argument” as opposed to “against the man”, and it is this solution the paper attempts to find. It is a characteristic mark of my analysis that some arguments that we might normally be inclined to say are fallacious turn out to be valid and that some arguments that we would normally be inclined to say are valid turn out to be fallacious. This is (in part) because what we call validity in modern logic is not the same as the apodicticity that Aristotelian syllogisms require in order to be used in science. The fallacies of accident, uniquely among the fallacies, are failures of apodicticity rather than failures of, in particular, semantic entailment. This makes sense in a tensed and token-based logic such as Aristotle’s. I conclude that the closest analogue to the fallacy of accident that we can point to is a fallacy in modal logic, viz., the fallacy of necessity. (shrink)

Lawrence Powers advocates a one-fallacy theory in which the only real fallacies are fallacies of ambiguity. He defines a fallacy, in general, as a bad argument that appears good. He claims that the only legitimate way that an argument can appear valid, while being invalid, is when the invalid inference is covered by an ambiguity. Several different kinds of counterexamples have been offered from begging the question, to various forms of ad hominem fallacies. In this paper, I outline (...) three potential counterexamples to Powers' theory, including one that has been addressed already by Powers, and two which are well known problems, but until now have never been applied as counterexamples to Powers' theory. I argue that there is a simpler explanation of these 'hard' cases than positing ambiguities that are not obviously there. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Plato's Political Analogy: Fallacy or Analogy? ROBERT W. HALL THE INTERPRETATIONOf the familiar political analogy between the state and the soul is crucial to a proper understanding of Plato's conception of the individual and his relation to the polls. Interpretations which, consciously or not, tend to identify the justice of the individual with that of the state result either in a subordination of justice of the individual to (...) that of the state, or in endowing the ordinary citizen with an inferior justice. These interpretations of the political analogy have beert adequately dealt with? Recently, Vlastos has stressed what he considers to be the logical or deductive character of the analogy." He finds defects or fallacies in Plato's logic, which, while not necessarily fatal to the significance of the analogy, seriously impair its cogency. What is of particular interest is Vlastos' claim that the primary goal of the analogy is a demonstration, unknown to most scholars, albeit an unsuccessful one, that the justice of the individual necessarily instantiates or entails ordinary acts of justice,a Vlastos has thus raised the question of what kind of approach is most fruitful in unlocking the meaning of the political analogy. My own conviction is that the political analogy can best be understood through a careful examination or observation of the two wholes, the state and the individual, and the character of their relationship. A consideration of the essentials of Vlastos' outlook on the analogy will be a useful introduction to what may be termed a "phenomenological" approach. Such a perspective may provide a better understanding of what Plato is attempting to establish in the analogy, and of how he goes about it. Vlastos' interpretation of the political analogy is strongly colored by his assessment of the central concern of the Republic, the proof that justice "pays." By this Vlastos means that what he terms "psychological justice," the correct, hierarchical arrangement of the three parts or aspects of the soul, must be proven to result in acts of external justice. It is this relationship between psychological justice and ordinary or social justice which sets the problem of logical consistency in Vlastos' account of the political analogy. As the definition of justice of the individual or psychological justice, Vlastos offers Socrates' statement, "In the case of each one of us, whoever is such that each of the three [psychic elements] in him does its own, he is a just man." The social description of justice is: What we laid down at the start as a general requirement when we were founding the polls this, or some form of it, is justice. We did lay down, and often stated, if you recall, that every single person ought to engage in the social function.., for which his own nature is I For exponents of these positions and their critics, cf. my "Plato's Theory of Justice in the Republic," Bucknell Review, XV, 2 (May, 1967), 60, n. I. G. Vlastos, "Justice and Psychic Harmony in the Republic," The 1ournal of Philosophy, LXVI, 16 (August 21, 1969), 505-521. All further references to this article will be by page number. s 506, 515. [419] 420 HISTORY OF PHILOSOPHY best fitted.uWe did say this.--And indeed that to do one's own and not to be meddlesome is justice, this we have often heard from many others, and have often said ourselves.-Wc have said it.--This, then, my friend, if taken in a certain way, appears to be justice: to do one's own. (433A-B) 4 Vlastos admits that this social description is not really a definition of the justice of the individual, "that 'doing one's own' was not meant to constitute a definition of the justice of an individual person.''~ Nonetheless, this social description functions for him as a definition of the individual's justice, and plays a prominent role in the supposed fallacy of equivocation in the meaning of justice. Vlastos argues for this social description on the grounds that "/or Plato every just man must have the disposition named by the 'doing one's own' formula.''e The basis for this claim is Socrates' declaration that "the same (moral) characters... (shrink)

Paul, L. A. (2014. Transformative Experience. Oxford University Press) argues that one cannot rationally decide whether to have a transformative experience by trying to form judgments, in advance, about (i) what it would feel like to have that experience, and (ii) the subjective value of having such an experience. The problem is if you haven’t had the experience then you cannot know what it is like, and you need to know what it is like to assess its value. However, in (...) earlier work I argued that ‘what it is like’-knowledge comes in degrees, and I briefly suggested that, consequently, some instances of Paul’s argument schema might commit a fallacy of equivocation. The aim of this paper is to further explore and strengthen this objection by, first, offering a new argument – the modelling argument – in support of it, and then by evaluating a range of replies that might be given to this objection on Paul’s behalf. I conclude that each reply either fails or, at best, only partially succeeds in defending some but not all instances of Paul’s argument schema. In closing, I consider how we might revise Paul’s concepts of transformative experiences and choices in response to this conclusion. (shrink)

Most work on fallacies continues to conceptualize fallacious reasoning as involving a breach of a formal or quasi-formal rule. Chaim Perelman's theory of argumentation provides a way to conceptualize fallacies in a completely different way. His approach depends on an understanding of standards of rationality as essentially connected with conceptions of universality. Such an approach allows one to get beyond some of the basic problems of fallacy theory, and turns informal logic toward substantive philosophical questions. I show this by (...) reinterpreting three so-called fallacies - theargumentum ad baculum, equivocation and composition/division - in the light of Perelman's account. (shrink)

A common strategy in ethical argumentation tries to derive ethical obligations from the rational necessity of not acting against certain “necessary” conditions for satisfying some good end. This strategy is very often fallacious, and works by equivocating over what counts as a “necessary” condition. Very often, what is counted as a necessary condition is not logically necessary for the end in question, but is at most related to it by affecting the probability of the end’s satisfaction. If other conditions affecting (...) the probability of satisfying this ends are then discounted as merely “instrumental” or “probabilistic”, this strategy has the function of hypocritically privileging some of the arguer’s preferred values over others. We should instead recognize that nearly all conditions affecting the probability of satisfying some good end borrow some value from the value of the end, in proportion to how much they tend to affect its probability of satisfaction. The fallacy tends to support rigid deontological norms; once we abandon it, many arguments against consequentialism are revealed merely as special pleading. Many ethical arguments use this fallacy, but I focus here on its use by Immanuel Kant. (shrink)

Recent debates over evolutionary ethics have often circled around T. H. Huxley's late claim that “Social progress means a checking of the cosmic process at every step.” In writing “Evolution and Ethics” and its long Prolegomena, however, Huxley may instead be wrestling with the nature and origin of human agency. Early in his career he saw evolution and social progress as converging, but as he came to find cosmic process alien to human welfare, he found moral agency more essential but (...) more problematic. Within “Evolution and Ethics,” evolution retreats into a cyclical stasis while ethical challenges end up submitting to it. Huxley implies, however, that in acknowledging these cycles as “natural,” ancient sages begged the question of whether resistance to them were possible. And when evolutionary ethicists delimit humanity's potential by its simian origins, Huxley invokes Hume's “naturalistic fallacy,” asking them how factual evidence can support their prescriptive conclusions. Both his naturalist and idealist reviewers then drove him to turn his Prolegomena into a rebuttal to the original essay. Here, advocating a balance between altruism and selfishness, Huxley works to relegate agency to a question of degree. In both essays, Huxley's epigrammatic prose demarcates the dead ends of much Victorian thought and points toward alternate paths not explored until the twentieth century. (shrink)

According to the one-fallacy theory, the only real fallacy is equivocation. In particular, the fallacy of incomplete evidence draws a conclusion inductively from parts of our evidence while ignoring other parts of it which undermine the conclusion. T his is an equivocation on the relative term 'probable': the conclusion is probable relative to a part of our evidence but not relative to the whole of it. Unfortunately, this view is not entirely consistent with my meta-theory (...) of fallacies which allows t hat some failures of rationality are errors simply in inductive reasoning rather than being equivocations. (shrink)

The paper is a warning against an unreserved use of reasoning, which is designed to show that a premise in an argument is missing. The reasoning is susceptible to a common equivocation. As a result, it can be systematically misleading, making us judge that certain premises are missing where they are not. It is argued that the equivocation in question lies at the bottom of Lewis Carroll's paradox, a version of Hume's problem as well as some arguments in (...) philosophy of mind and ethics. The paper is first and foremost a warning because it turns out that there is some didactic value in playing on the equivocation. (shrink)

Conceptual Engineering, the practice of stipulating a change in the meaning of a word in order to improve it in some fashion, for some end, has proved a popular topic among philosophers of language in recent times. Deutsch (Philos Stud 177:3935–3957, 2020) has argued that it has received an undue degree of interest since its implementation falls onto one of the horns of a dilemma: either the change to be effected is in the global semantic meaning of the given word/concept, (...) in which case it is infeasible, or it is merely in the local speaker-meaning, in which case it is largely trivial. I suggest, however, that there is a deeper, more troubling, objection to Conceptual Engineering. My criticism does not strictly take the form of a dilemma, since some cases may fall upon both horns at once and others may be able to squeeze through the gap, but it does involve highlighting two potential weaknesses of the project: one of those, as with Deutsch, is the danger of triviality, although it is not concerned only with the division between semantic and speaker meaning. It seems clear that there are cases where a particular authority or legislature has the capacity to alter a word’s legal meaning; others where certain groups may discuss the best way to use a technical term, each putting forward their preferred suggestions; and individual speakers are at liberty to choose to use a word with a particular intention. None of this is new, nor controversial, and, thus, is largely trivial. In all cases, but particularly where meanings are manipulated without due authority, inexplicitly, or in order to further a particular theoretical conception, however, there is a strong chance that the engineer will be led to commit one of the fallacies of language to which philosophy is particularly vulnerable (Hinton Evaluating the language of argument, Springer, Cham, 2021). These include fallacies of vagueness, equivocation, and persuasive definition. In this paper, I use examples to illustrate the likely fallaciousness of conceptual redefinitions and highlight in particular the ‘Philosophical Fallacy’, outlined by Nelson (A theory of philosophical fallacies.Translated by Leal F, Carus D. Springer, Cham 2016). I conclude that, as a method for philosophers, Conceptual Engineering is, in broad terms, either trivial or fallacious. (shrink)

Hamblin’s Fallacies remains one of the crucial documents in the development of informal logic and argumentation theory. His critique of traditional approaches to the fallacies (what he dubbed ‘The Standard Treatment’) helped to revitalize the study of fallacies. Recently I had occasion to reread Fallacies and came to the conclusion that some of my earlier criticisms (1989, 1990) had missed the real force of what was going on there, that I and others have perhaps not fully appreciated what Hamblin is (...) up to. In this paper, I plan to revisit Fallacies and make manifest its coherence. (shrink)

What was the fate of personalistic vitalism in later Indian thought? That question is too large to be considered here, but it is certain that the doctrine did reemerge, and has remained influential. Nonetheless, there is some reason to believe that Śātarak $$\underset{\raise0.3em\hbox{$\smash{\scriptscriptstyle\cdot}$}}{s}$$ ita critique of personalistic vitalism did have an immediate impact on philosophers within the Nyāya tradition: Vācaspatimiśra, Uddyotakara's sub-commentator, whom we know to have been familiar with Śātarak $$\underset{\raise0.3em\hbox{$\smash{\scriptscriptstyle\cdot}$}}{s}$$ ita Tattvasa $$\underset{\raise0.3em\hbox{$\smash{\scriptscriptstyle\cdot}$}}{m}$$ graha simply passes over Uddyotakara's already (...) equivocal argument without making any effort to defend it. Certainly, he had concluded that Uddyotakara's weak assertion of personalistic vitalism was either not important, or else a lost cause. Is it too much to suppose that he might have let himself be convinced, in this case, by a Buddhist?The ancient debate between ātmavādin and anātmavādin was at the heart of a conflict between opposing systems of salvation. To construe this, however, in accordance with our contemporary categorical schemes involves a fundamental error, for “systems of salvation” in ancient India were concerned with human nature and the human world, in a rich and full sense. What I have tried to indicate here is that one strand of the debate in question can be isolated and shown to involve progressive developments in the conceptual analysis of a basic biological doctrine. Other strands that might similarly be analyzed bear upon the theories of agency and causation, and rational and empirical psychology. To study these and many other topics in classical Indian thought from the perspective here advocated does not require our losing sight of the essential religious interests which motivated and informed the Indian discussions with which we are concerned; what it does require is an involvement in the history of ideas quite broadly conceived. In this context we should recall that it is now possible to treat much of classical Indian thought from a truly historical, and not merely doxographical, vantage-point. By focusing less upon belief and doctrine within single systems, and more upon the dynamic tension that arose where competing systems came into conflict, we discover that there was indeed historical progress, and that it is characterized in part by the application of methodological refinements in the areas of logic and epistemology to problems that had been defined in antiquity. This sounds very much like the history of philosophy in other settings; what must be done is to fill in the details with respect to the splendid array of questions which Indian thinkers posed and the answers about which they argued. (shrink)

In argumentation, metaphors are often considered as ambiguous or deceptive uses of language leading to fallacies of reasoning. However, they can also provide useful insights into creative argumentation, leading to genuinely new knowledge. Metaphors entail a framing effect that implicitly provides a specific perspective to interpret the world, guiding reasoning and evaluation of arguments. In the same vein, emotions could be in sharp contrast with proper reasoning, but they can also be cognitive processes of affective framing, influencing our reasoning and (...) behavior in different meaningful ways. Thus, a double (metaphorical and affective) framing effect might influence argumentation in the case of emotive metaphors, such as “Poverty is a disease” or “Your boss is a dictator,” where specific “emotive words” (disease, dictator) are used as vehicles. We present and discuss the results of two experimental studies designed to explore the role of emotive metaphors in argumentation. The studies investigated whether and to what extent the detection of a fallacious argument is influenced by the presence of a conventional vs. novel emotive metaphor. Participants evaluated a series of verbal arguments containing either “non-emotive” or “emotive” (positive or negative) metaphors as middle terms that “bridge” the premises of the argument. The results show that the affective coherence of the metaphor's vehicle and topic plays a crucial role in participants' reasoning style, leading to global heuristic vs. local analytical interpretive processes in the interplay of the metaphorical and the affective framing effects. (shrink)

In Sartre’s 1946 article “The Humanism of Existentialism,” Sartre places existentialists into two categories, Christian or atheist, and contends that existentialism works differently for each of them. This paper argues that such a distinction should not have been made because existentialist beliefs, views, and themes do not differ based on one’s religiosity. This paper specifically examines three examples in Sartre’s article which undermine his position, and further argues that Sartre made an equivocation fallacy by conflating two different types (...) of essence, one’s innate essence and one’s character essence. The paper then explores six central existentialist themes to demonstrate that in their existentialist beliefs both the theist and the atheist agree. Those six themes are authenticity, sincerity vs. bad faith, the absurdity of life, the meaning of life, choice, and responsibility. The paper also examines the issue of moral objectivity vs. non-objectivity, and argues that not only is this not an existentialist issue, but even if it were one’s belief on moral objectivity does not cleanly correspond to one’s religious beliefs, so here again there is no basis to distinguish the Christian and the atheist. The paper concludes that any disagreement between existentialists who are Christian and those who are atheist comes down to differences in their religious beliefs, not their existentialist views. (shrink)

The “Problem of the Rock” (PoR) is a famous objection to Higher-Order (HO) theories of consciousness. According to PoR, the HO theorists’ claim that a mental state is conscious iff there is a higher-order mental state about it implies that a rock is also conscious iff there is a higher-order mental state about it. In this paper I show that this argument confuses two grammatically distinct attributions of consciousness, and that if the consequent equivocation fallacy is avoided, PoR (...) is either a straw man argument or has an unproblematic conclusion. (shrink)

Many of the philosophical doctrines purveyed by postmodernists have been roundly refuted, yet people continue to be taken in by the dishonest devices used in proselytizing for postmodernism. I exhibit, name, and analyse five favourite rhetorical manoeuvres: Troll's Truisms, Motte and Bailey Doctrines, Equivocating Fulcra, the Postmodernist Fox Trot, and Rankly Relativising Fields. Anyone familiar with postmodernist writing will recognise their pervasive hold on the dialectic of postmodernism and come to judge that dialectic as it ought to be judged.

This is an introductory guidebook to the basic principles of how to construct good arguments and how to criticeze bad ones. It is non-technical in its approach and is based on 150 key examples, each discussed and evaluated in clear, illustrative detail. Professor Walton, a leading authority in the field of informal logic, explains how errors, fallacies, and other key failures of argument occur. He shows how correct uses of argument are based on sound strategies for reasoned persuasion and critical (...) responses. Among the many subjects covered are: forms of valid argument, relevance, appeals to emotion, personal attack, uses and abuses of expert opinion, problems in deploying statistics, loading terms, equivocation, arguments from analogy, and techniques of posing, replying to, and criticizing questions. The book will be ideally suited to courses in informal logic and in the introduction to philosophy. It will also prove valuable to studetns of pragmatics, rhetoric, and speech communication. (shrink)

Manipulation of quotation, shown to be a common tactic of argumentation in this paper, is associated with fallacies like wrenching from context, hasty generalization, equivocation, accent, the straw man fallacy, and ad hominem arguments. Several examples are presented from everyday speech, legislative debates and trials. Analysis using dialog models explains the critical defects of argumentation illustrated in each of the examples. In the formal dialog system CB, a proponent and respondent take turns in making moves in an orderly (...) goal-directed sequence of argumentation in which the proponent tries to persuade the respondent to become committed to a conclusion by asking questions and offering arguments. Analyzing quotation by using the notion of commitment in dialog, it is shown (a) how an arguer’s previous assertions can be brought to light in the course of a dialog to deal with problems arising from misquotation, (b) how the profile of dialog model allows a critic to analyse the fundamental effects misquotation brings about in a dialog, and (c) how the critic can use such an analysis to correct the problem. (shrink)

This is an introductory guide to the basic principles of constructing good arguments and criticizing bad ones. It is nontechnical in its approach, and is based on 150 key examples, each discussed and evaluated in clear, illustrative detail. The author explains how errors, fallacies, and other key failures of argument occur. He shows how correct uses of argument are based on sound argument strategies for reasoned persuasion and critical questions for responding. Among the many subjects covered are: techniques of posing, (...) replying to, and criticizing questions, forms of valid argument, relevance, appeals to emotion, personal attack, uses and abuses of expert opinion, problems in deploying statistics, loaded terms, equivocation, and arguments from analogy. (shrink)

The distinction between constitutive and regulative rules is applied to rules for critical discussion that have to do with the use of ambiguous expressions. This leads to a distinction between rule violating fallacies, by which one abandons a critical discussion, and norm violating fallacies, which are in a way admissible within a critical discussion. According to the formal model for critical discussion, proposed in this paper, fallacies of the norm violating type arc not prohibited. Instead, it provides discussants with devices (...) to discuss fallacies and fallacy criticisms. (shrink)

The debate about concepts has always been shaped by a contrast between subjectivism, which treats them as phenomena in the mind or head of individuals, and objectivism, which insists that they exist independently of individual minds. The most prominent contemporary version of subjectivism is Fodor's RTM. The Fregean charge against subjectivism is that it cannot do justice to the fact that different individuals can share the same concepts. Proponents of RTM have accepted shareability as a ‘non-negotiable constraint’. At the same (...) time they insist that by distinguishing between sign-types and – tokens the Fregean objection cannot just be circumvented but revealed to be fallacious. My paper rehabilitates the Fregean argument against subjectivism. The RTM response rests either on an equivocation of ‘concept’—between types which satisfy the non-negotiable constraint and tokens which are mental particulars in line with RTM doctrine—or on the untenable idea that one and the same entity can be both a shareable type and hence abstract and a concrete particular in the head. Furthermore, subjectivism cannot be rescued by adopting unorthodox metaphysical theories about the type/token and universal/particular contrasts. The final section argues that concepts are not representations or signs, but something represented by signs. Even if RTM is right to explain conceptual thinking by reference to the occurrence of mental representations, concepts themselves cannot be identical with such representations. (shrink)

Theiones is a work in medieval logic from the second half of the 13th century. Clearly a product of the British university culture and much cited, quoted and imitated, it is attributed in two manuscripts to 'Master Richard the Sophist'. This Richard is referred to by other philosophers and logicians as 'The Master of Abstractions' - an honorific title which indicates that his work was a standard textbook. The Abstractiones is a collection of sophismata, or logical puzzles of increasing complexity (...) and difficulty which have been gathered under logical operators like 'all'. Each sophisma is introduced by a proposition that appears to be both provably true and provably false, like 'God knows whatever he knew'. The Master determines the truth or falsity of the proposition and analyses the defects of the arguments that have been offered by detecting logical fallacies, equivocal expressions and the like. The work as we have it is clearly the result of a process of development, modification, and interpolation, probably extending over at least a generation. Although there came to be works that imitated the Abstractions and followed some of its plan and style, these are 'descendants,' rather than variations.The Abstractions gives us a better sense than does an independent and original work of medieval logic like William of Ockham's Summa Totius Logicae of how instruction in techniques of argumentation and reasoning, often of a fairly sophisticated sort, was carried on in British universities in the latter part of the 13th century and well into the 14th century. (shrink)

Two striking claims are advanced on behalf of the free energy principle in cognitive science and philosophy: that it identifies a condition of the possibility of existence for self-organising systems; and that it has important implications for our understanding of how the brain works, defining a set of process theories—roughly, theories of the structure and functions of neural mechanisms—consistent with the free energy minimising imperative that it derives as a necessary feature of all self-organising systems. I argue that the conjunction (...) of claims and rests on a fallacy of equivocation. The FEP can be interpreted in two ways: as a claim about how it is possible to redescribe the existence of self-organising systems, and as a claim about how such systems maintain their existence. Although the Descriptive FEP plausibly does identify a condition of the possibility of existence for self-organising systems, it has no important implications for our understanding of how the brain works. Although the Explanatory FEP would have such implications if it were true, it does not identify a condition of the possibility of existence for self-organising systems. I consider various ways of responding to this conclusion, and I explore its implications for the role and importance of the FEP in cognitive science and philosophy. (shrink)

The attempt to hold both anti-individualism and privileged self-knowledge may have the absurd consequence that someone could know a priori propositions that are knowable only empirically. This would be so if such an attempt entailed that one could know a priori both the contents of one’s own thoughts and the anti-individualistic entailments from those thought-contents to the world. For then one could also come to know a priori the empirical conditions entailed by one’s thoughts. But I argue that there is (...) no construal of a priori knowledge that could be used to raise an incompatibility problem of this sort. First, I suggest that the incompatibilist a priori must be a stipulative one, since in none of the main philosophical traditions does knowledge of the contents of one’s thoughts count as a priori. Then, I show that under various possible construals of a priori, the incompatibilist argument would be invalid: either a fallacy of equivocation or an argument without a plausible closure principle guaranteeing transmission of epistemic status from premises to conclusion. Finally, I maintain that the only possible construal of the property of being knowable a priori that avoids invalidity is one that fails to generate the intended reductio. (shrink)

David Hume has been invoked by those who want to found morality on human nature as well as by their critics. He is credited with showing us the fallacy of moving from premises about what is the case to conclusions about what ought to be the case; and yet, just a few pages after the famous is-ought remarks in A Treatise of Human Nature, he embarks on his equally famous derivation of the obligations of justice from facts about the (...) cooperative schemes accepted in human communities. Is he ambivalent on the relationship between facts about human nature and human evaluations? Does he contradict himself – and, if so, which part of his whole position is most valuable? Between the famous is-ought passage and the famous account of convention and the obligations arising from established cooperative schemes once they are morally endorsed, Hume discusses the various meanings of the term “natural.” “Shou'd it be ask'd, Whether we ought to search for these principles [upon which all our notions of morals are founded] in nature or whether we must look for them in some other origin? I wou'd reply, that our answer to this question depends upon the definition of the word, Nature, than which there is none more ambiguous and equivocal.” The natural can be opposed to the miraculous, the unusual, or the artificial. It is the last contrast that Hume wants, for his contrast between the “artificial” culturally variant, convention-dependent obligations of justice and the more invariant “natural virtues,” and what he says about that contrast in this preparation for his account of the “artificial” virtues, makes it clear why he can later refer to justice as “natural” and to the general content of the rules of justice – that is, of basic human conventions of cooperation – as “Laws of Nature”. (shrink)

We present a meta-analytic review on the processing of negations in conditional reasoning about affirmation problems (Modus Ponens: “MP”, Affirmation of the Consequent “AC”) and denial problems (Denial of the Antecedent “DA”, and Modus Tollens “MT”). Findings correct previous generalisations about the phenomena. First, the effects of negation in the part of the conditional about which an inference is made, are not constrained to denial problems. These inferential-negation effects are also observed on AC. Second, there generally are reliable effects of (...) a negation in the clause referred to by the categorical premise, and these referred-negation effects are constrained to the logically fallacious AC and DA inferences. All findings are presented and discussed in relation to contemporary mental model (MM) and mental logic (ML) theories. It is argued that a double-negation elimination hypothesis provides a sufficient explanation of inferential-negation effects within both MM theory and ML theory, if the latter is extended by a validating search for counter examples. Both MM and ML theories adhere to a processing scheme that allows them to incorporate an account of referred-negation effects based on the thesis that counter-example frequency is modulated by the scope of a contrast class delineated by a false affirmative. We conclude that MM and ML theories provide adequate processing schemes to accommodate for the explanatory hypotheses, at least in principle. In practice, both approaches remain equivocal as regards the connectivity and interactivity with long-term memory knowledge invoked in generating, manipulating, and testing the mental representations of negative state of affairs. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:The Possibility Of Puns: A Defense of DerridaGordon C. F. BearnHow is a pun possible?—J. Derrida 1Puns are not high on the philosophical horizon. 2 Wittgenstein, it is true, thought that the depth of grammatical jokes was the same as the depth of philosophy, but it is not unusual to smile politely at this remark, and move on. 3 Jokes, like puns, are philosophically puny. Or worse. The air (...) of crime clings to puns. In some contexts the use of a pun is enough to convict one of the fallacy of equivocation, and even where “simply” fun, we refuse to laugh. By groaning, we punish the punster. Apparently we take puns more seriously than we consistently insist.Puny or not, puns do exist, and any adequate account of linguistic communication should allow for the possibility of puns. Surprisingly enough, one natural way to account for this possibility brings us very close to a Derridean domain most philosophers of language make every effort to avoid. But with this result in hand, we may be better placed to understand the seriousness which by scoffing at puns we mask.Puns can be made, but more often they are found. We can find ourselves surprised, sometimes embarrassed, by puns we have inadvertently put into play while thinking about some other, more serious, linguistic business. These are the puns I want to consider: inadvertent puns. 4 How are they possible? It is easy to think that in ordinary cases of using a word, we intentionally or contextually invoke some one of that [End Page 330] word’s possible significances and put that significance into play in our sentence. Successful communication would then consist in successfully transmitting that significance—and only that significance—to the receiver of our communication. The possibility of inadvertent puns shows that more meanings of a word are in play than those we have intentionally put into play. The possibility of puns which are not only inadvertent but also inappropriately sexual shows, in addition, that more meanings of a word are in play than are contextually called for. Inadvertent puns draw our attention to the occasional powerlessness of either context or intention to narrow down the possible significances of our spoken or written words to one. What are we to make of these facts?At a minimum, the possibility of inadvertent puns shows that more meanings of our words can be in play than we normally suppose. We might want to say that only those meanings were in play which surfaced with the inadvertent pun itself. But is there any justification for drawing the line there? The only thing that makes the situation of the inadvertent pun different from the more usual one is that we noticed the intentionally and contextually surprising meanings. But the possibility of inadvertent puns is perfectly general, so the most straightforward account of the possibility of inadvertent puns is to say that all possible significances of a word are always in play whenever it is being used. The fact that we don’t normally notice this is no more remarkable than the fact that we don’t normally notice the size of people’s ears. Inadvertent puns draw our attention to what was there all along.Immediately smelling trouble, we might consider backpedalling: insisting that the only meanings invoked by an inadvertent pun were those intentionally invoked by the producer of the pun. But that would be to deny the existence of inadvertent puns altogether; it would be to insist that they were illusory, merely apparent, artifacts of the circumstances, not really real, at all. This is as unpalatable a suggestion as that according to which the spinach was only apparently good for playing spinach tennis, simply because the cook did not intend to produce projectiles. The cook’s intentions make these qualities of the spinach unintentional, but not unreal. So, pedalling forward once again: what are the consequences of saying that whenever we use a word all of its possible significances are in play?(a) We will have to reconceive our account of interpretation. When it is a question of providing an interpretation of a spoken or written text, this hermeneutical process... (shrink)

The paper describes four dialogue systems, developed in the tradition of Charles Hamblin. The first system provides an answer for Achilles in Lewis Carroll's parable, the second an analysis of the fallacy of begging the question, the third a non-psychologistic account of conversational implicature, and the fourth an analysis of equivocation and of objections to it. Each avoids combinatorial explosions, and is intended for real-time operation.

The term ‘realism’ and its contrasting terms have various related senses, although often they occlude as much as they illuminate, especially if ontological and epistemological issues and their tenable combinations are insufficiently clarified. For example, in 1807 the infamous ‘idealist’ Hegel argued cogently that any tenable philosophical theory of knowledge must take the natural and social sciences into very close consideration, which he himself did. Here I argue that Hegel ably and insightfully defends Newton’s causal realism about gravitational force, in (...) part by exposing a fatal equivocation in the traditional concept of substance, by criticizing some still-standard empiricist misconceptions of force, by emphasizing the role of explanatory integration in Newtonian mechanics, and by using his powerful semantics of singular, specifically cognitive reference to justify fallibilism regarding empirical justification, together with the semantic core of Newton’s Rule Four of (experimental) Philosophy—in a way that highlights a key fallacy in many arguments against realism, both in epistemology and within philosophy of science. (shrink)

In this paper, I wish to revisit some familiar terrain, namely an argument that occurs in many of Russell's writings on the theory of descriptions and which he repeatedly describes as a “proof.” For the past two decades this argument has been the subject of considerable philosophical controversy. The prevailing view has been that it is invalid. Leonard Linsky, for instance, maintains that it is circular, while Peter Geach, W.V.O. Quine, and Alan White have argued that it equivocates on two (...) different senses of the word “means” and is therefore fallacious. Yet the argument has also had its defenders. In an acute and persuasive paper, R.K. Perkins has recently contended that some of these critics fail to understand that Russell is employing the term “means” in a special and technical sense, where it is equivalent to “naming”, and that when so understood, the argument does in fact go through. (shrink)

The past decade has witnessed the emergence of a novel stance on semantic representation, and its relationship to context sensitivity. Connectionist-minded philosophers, including Clark and van Gelder, have espoused the merits of viewing hidden-layer, context-sensitive representations as possessing semantic content, where this content is partially revealed via the representations'' position in vector space. In recent work, Bodén and Niklasson have incorporated a variant of this view of semantics within their conception of semantic systematicity. Moreover, Bodén and Niklasson contend that they (...) have produced experimental results which not only satisfy a kind of context-based, semantic systematicity, but which, to the degree that reality permits, effectively deals with challenges posed by Fodor and Pylyshyn (1988), and Hadley (1994a). The latter challenge involved well-defined criteria for strong semantic systematicity. This paper examines the relevant claims and experiments of Bodén and Niklasson. It is argued that their case fatally involves two fallacies of equivocation; one concerning ''semantic content'' and the other concerning ''novel test sentences''. In addition, it is argued that their ultimate construal of context sensitive semantics contains serious confusions. These confusions are also found in certain publications dealing with "latent semantic analysis". Thus, criticisms presented here have relevance beyond the work of Bodén and Niklasson. (shrink)

We present a meta-analytic review on the processing of negations in conditional reasoning about affirmation problems (Modus Ponens: "MP", Affirmation of the Consequent "AC") and denial problems (Denial of the Antecedent "DA", and Modus Tollens "MT"). Findings correct previous generalisations about the phenomena. First, the effects of negation in the part of the conditional about which an inference is made, are not constrained to denial problems. These inferential-negation effects are also observed on AC. Second, there generally are reliable effects of (...) a negation in the clause referred to by the categorical premise, and these referred-negation effects are constrained to the logically fallacious AC and DA inferences. All findings are presented and discussed in relation to contemporary mental model (MM) and mental logic (ML) theories. It is argued that a double-negation elimination hypothesis provides a sufficient explanation of inferential-negation effects within both MM theory and ML theory, if the latter is extended by a validating search for counter examples. Both MM and ML theories adhere to a processing scheme that allows them to incorporate an account of referred-negation effects based on the thesis that counter-example frequency is modulated by the scope of a contrast class delineated by a false affirmative. We conclude that MM and ML theories provide adequate processing schemes to accommodate for the explanatory hypotheses, at least in principle. In practice, both approaches remain equivocal as regards the connectivity and interactivity with long-term memory knowledge invoked in generating, manipulating, and testing the mental representations of negative state of affairs. (shrink)