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)

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)

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)

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.

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)

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)

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)

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)

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)

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)

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)

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)

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)

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)

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)

Frank Jackson has a new objectivist and representationalist account of the content of colour-experience. I raise several objections both against the account itself and, primarily, against how he tries to support it. He argues that the new account enables us to see what is wrong with the so-called Opacity Puzzle. This alleged puzzle is an argument in which a seemingly implausible conclusion is derived from three premises of which seem plausible to an representationalist. Jackson’s diagnosis of the puzzle as a (...) fallacy of equivocation is mistaken. The term ‘‘the property of being red’’ is not ambiguous in the way he claims it to be, and the puzzling argument is valid. Moreover, its conclusion is not implausible, so after all there is no real puzzle. I try to show how Jackson’s wrong diagnosis results from neglecting the difference between properties proper and properties as conceived in the light of a given property-concept. (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)

Introduction Dorothea Frede and Brad Inwood 1. The Stoics on the origin of language and the foundations of etymology James Allen 2. Stoic linguistics, Plato's Cratylus, and Augustine's De dialectica A. A. Long 3. Epicurus and his predecessors on the origin of language Alexander Verlinsky 4. Lucretius on what language is not Catherine Atherton 5. Communicating cynicism: Diogenes' gangsta rap Ineke Sluiter 6. Common sense: concepts, definition and meaning in and out of the Stoa Charles Brittain 7. Varro's anti-analogist David (...) Blank 8. The Stoics on fallacies of equivocation Susanne Bobzien 9. What is a disjunction? Jonathan Barnes 10. Theories of language in the Hellenistic age and in the twelfth and thirteenth centuries Sten Ebbesen. (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)

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.

In my dissertation, I analyze, interpret, and defend John Stuart Mill's proof of the principle of utility in the fourth chapter of his Utilitarianism. My purpose is not to glorify utilitarianism, in a full sweep, as the best normative ethical theory, or even to vindicate, on a more specific level, Mill's universalistic ethical hedonism as the best form of utilitarianism. I am concerned only with Mill's utilitarianism, and primarily with his proof of the principle of utility. My overarching purpose guiding (...) the entire work is to show that Mill proceeds intelligibly and systematically in pursuing a well-defined project in the fourth chapter of Utilitarianism, and that he successfully defends what he sets out to establish in his proof of the principle of utility. To this end, I devote the bulk of my efforts to studying and responding to traditionally popular and persistently enduring objections to the proof that are handed down from one generation to the next in the philosophical community as a standard companion to Utilitarianism. The primary objections to which I respond at length are the charges that Mill commits the naturalistic fallacy, the fallacy of equivocation, and the fallacy of composition in his proof. Secondary literature on the subject consists of journal articles and book chapters that treat one or another but not all of these problems. My research has convinced me that, although these commentaries are generally quite good, they are mutually incompatible, and they are neither severally nor jointly sufficient to produce the kind of comprehensive defense that would do justice to Mill's proof of the principle of utility. This kind of comprehensive defense is what I intend to contribute to secondary literature on the subject. Specifically, my ultimate contribution to secondary literature is an interpretation of Mill's proof of the principle of utility in its entirety, absolved of the three fallacies commonly attributed to the proof, yet faithful to the text at all points. (shrink)

To hold an environmental ethic is to hold that non-human beings and states of affairs in the natural world have intrinsic value. This seemingly straightforward claim has been the focus of much recent philosophical discussion of environmental issues. Its clarity is, however, illusory. The term ‘intrinsic value’ has a variety of senses and many arguments on environmental ethics suffer from a conflation of these different senses: specimen hunters for the fallacy of equivocation will find rich pickings in the (...) area. This paper is largely the work of the underlabourer. I distinguish different senses of the concept of intrinsic value, and, relatedly, of the claim that non-human beings in the natural world have intrinsic value; I exhibit the logical relations between these claims and examine the distinct motivations for holding them. The paper is not however merely an exercise in conceptual underlabouring. It also defends one substantive thesis: that while it is the case that natural entities have intrinsic value in the strongest sense of the term, i.e., in the sense of value that exists independently of human valuations, such value does not as such entail any obligations on the part of human beings. The defender of nature’s intrinsic value still needs to show that such value contributes to the well-being of human agents. (shrink)

We investigate argumentation where an expression is substituted with a less precise expression. We propose that the effect that this deprecization has on the audience be called deprecization effect. When the audience agrees more with the less precise version of the argument, there is a positive deprecization effect. We conducted an experiment where the participants were presented with a court room scenario. The results of the experiment confirm the following hypothesis: If the participants find it hard to agree with the (...) precise version of the argument and accept the use of the imprecise term, they will agree more with the imprecise version of the argument. Furthermore, we show that a person who reacts in this way to deprecization commits the fallacy of equivocation. (shrink)

There are still on-going debates on what exactly is wrong with Prior’s pathological “tonk.” In this article I argue, on the basis of categorical inferentialism, that two notions of inconsistency ought to be distinguished in an appropriate account of tonk; logic with tonk is inconsistent as the theory of propositions, and it is due to the fallacy of equivocation; in contrast to this diagnosis of the Prior’s tonk problem, nothing is actually wrong with tonk if logic is viewed (...) as the theory of proofs rather than propositions, and tonk perfectly makes sense in terms of the identity of proofs. Indeed, there is fully complete semantics of proofs for tonk, which allows us to link the Prior’s old philosophical idea with contemporary issues at the interface of categorical logic, computer science, and quantum physics, and thereby to expose commonalities between the laws of Reason and the laws of Nature, which are what logic and physics are respectively about. I conclude the article by articulating the ideas of categorical logical positivism and pluralistic unified science as its goal, including the unification of realist and antirealist conceptions of meaning by virtue of the categorical logical basis of metaphysics. (shrink)

Having, as it is generally agreed, failed to destroy the computational conception of mind with the G\"{o}delian attack he articulated in his {\em The Emperor's New Mind}, Penrose has returned, armed with a more elaborate and more fastidious G\"{o}delian case, expressed in and 3 of his {\em Shadows of the Mind}. The core argument in these chapters is enthymematic, and when formalized, a remarkable number of technical glitches come to light. Over and above these defects, the argument, at best, is (...) an instance of either the fallacy of denying the antecedent, the fallacy of {\em petitio principii}, or the fallacy of equivocation. More recently, writing in response to his critics in the electronic journal {\em Psyche}, Penrose has offered a G\"{o}delian case designed to improve on the version presented in {\em SOTM}. But this version is yet again another failure. In falling prey to the errors we uncover, Penrose's new G\"{o}delian case is unmasked as the same confused refrain J.R. Lucas initiated 35 years ago. (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.

In earlier work I defended Intrinsic Attitudinal Hedonism—a view about what makes for individual personal welfare. On this view, a person’s level of welfare is entirely determined by the amounts of intrinsic attitudinal pleasure and pain he or she takes in things. The view seems to run into trouble in cases involving individuals who take their pleasure in disgusting, immoral things; and in cases involving individuals who take their pleasure in things that really don’t actually happen; and in cases involving (...) individuals who enjoy pleasures but who lead meaningless lives; and in cases involving individuals whose lives fail to manifest an attractive narrative structure. After sharpening up the objections, I introduce a distinction between Pure Welfare Narrowly Conceived and Enriched Welfare Broadly Conceived. I go on to claim that if this distinction is recognized, we will be able to say that each of the objections rests on the fallacy of equivocation. If, years ago, I had been more sensitive to the distinction between Pure Welfare and Enriched Welfare I would have been able to respond to the objections in a more coherent and effective way. I present that response here. In an appendix, I compare my current view with a related view defended by Shelly Kagan in ‘Me and My Life’. (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)

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)

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)

In this brief essay, I argue that Anselm's ontological argument for the existence of God achieves its effect through the verbal equivalent of a magician's "sleight-of-hand." More technically, the argument commits the informal fallacy of equivocation. I provide a brief analysis of the argument's text to demonstrate this.

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)

A lively philosophical debate has lately arisen over the nature of elementhood in chemistry. Two different senses in which the technical term ELEMENT is currently in use by chemists have been identified, leaving chemistry open to the logical fallacy of equivocation. This paper introduces a third, more elemental candidate: the high-enthalpy short-lived unbonded atom. An enthalpy index based on free-atoms-as-elements is established, whereby one can monitor the degree to which an atom’s spin-based attractive force is implemented exo-enthalpically when (...) the atom binds chemically to others. Enthalpy indexing shows that the strength of an atom’s attractive force is proportional to its spin angular momentum. Vibrational spectroscopy shows that the force varies inversely as the fourth power of the inter-atom distance. Both features differentiate the chemical force from the stronger electromagnetic force and from the weaker Van der Waals force. (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)

Introduction to the Scientific Proof of the Natural Moral Law This paper proves that Aquinas has a means of demonstrating and deriving both moral goodness and the natural moral law from human nature alone. Aquinas scientifically proves the existence of the natural moral law as the natural rule of human operations from human nature alone. The distinction between moral goodness and transcendental goodness is affirmed. This provides the intellectual tools to refute the G.E. Moore (Principles of Ethics) attack against the (...) natural law as committing a "naturalistic fallacy". This article proves that instead Moore commits the fallacy of equivocation between moral goodness and transcendental goodness in his very assertion of a "naturalistic fallacy" by the proponents of the natural moral law. In the process the new deontological/kantian theory of natural law as articulated by John Finnis, Robert George, and Germain Grisez is false historically and philosophically. Ethical naturalism is affirmed as a result. (shrink)

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)

In this work, Joshua Hochschild presents the semantic principles of Cajetan's understanding of analogy, arguing that they should be understood on their own terms and not as a commentary on Aquinas despite the inevitable comparisons between the two thinkers. In the first three chapters, Hochschild argues convincingly that Cajetan's discussion is aimed to answer specific questions that were occasioned by John Duns Scotus's arguments against analogy and not solely as an attempt to interpret Aquinas. Hochschild summarizes Scotus's arguments as objections (...) to the use of analogy in scientific reasoning, which his opponents thought must be used in order for metaphysics to remain a science . More specifically, Scotus argues that only a univocal treatment of being could preserve such reasoning.In chapter 4, Hochschild argues that Aquinas does not provide an answer to Scotus's challenge, although a Thomistic answer could be formulated based on his writings . Despite this charitable admission, however, Hochschild appears to gainsay any such solution by claiming the following: "The proposed rule that analogy involves a common res significata and diverse modi significandi does not help us explain why some analogical terms can be used in syllogisms without causing the fallacy of equivocation" . As an example, Hochschild cites the analogical use of. (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:just Men and Just Acts in Plato's Republic JEROME SCHILLER I. Introduction Too MUCHhas already been written about Plato's Republic. But this, strangely enough, is why a little more needs to be written. For the book has been worked over so often that an obvious sign of fatigue has set in: critics are beginning to find such elementary flaws in the Republic that one wonders why he should waste (...) time on such a philosophically embarrassing work at all. It is to counter one of these recent criticisms and thus, hopefully, to help offset the fatigue, that this study is written. It purports not only to show the criticism mistaken, but also to sketch a way of looking at the Republic which should send the reader back for a further look at this incredibly rich work. The richness of the Republic is, indeed, a source of embarrassment for anyone writing on it. For because of its structure it is at least misleading to isolate one topic from the myriad others treated there, and because of its complexity, impossible to document interpretations of more than a few topics. I shall follow the time-honored practices here of merely expressing my bias on some topics (such as my non-political interpretation) and leaving it up to the reader to follow up hints of my interpretations of other topics (such as that of the Sun, Line, and Cave). II. Plato's Alleged Fallacy in the Republic David Sachs and A. W. H. Adkins have recently claimed that Plato commits the fallacy of equivocation in the Republic, not in the course of some minor argument, but in answering what is probably the central problem posed by the work: Why be just?1 Simply put, their objection goes like this: In the first book of the Republic, Socrates attempts to prove to Thrasymachus why justice is preferable to injustice. But even Socrates is dissatisfied with this answer and early in the second book, after a brilliantly fashioned defense of the Thrasymachean position by Glaucon and Adeimantus, the brothers ask for a more convincing demonstration from "You, [who have] passed your entire life in the consideration of this very matter." e Socrates seems to accept the challenge and proceeds to a search for the concept of justice writ large in the state. Now, claim Adkins and Sachs, Plato never does answer Glaucon's and AdeiDavid Sachs, A Fallacy in Plato s Republic, Philosophical Review, LX(XII (1963),141158 ;A. W. H. Adkins, Merit and Responsibility, A Study in Greek Values (Oxford,1960),p. 289. Adkins,in developingapolitical interpretation ofthe Republic, doesnot elaborate the criticism as does Sachs; hence I refer in this study primarily to the latter's article. sPlato, Republic 376e 2-3,trans. P. Shorey (2 vols.; Cambridge, Mass.: Loeb Classical Library, 1937-42).All subsequent quotations are from this translation. [1] HISTORY OF PHILOSOPHY mantus' request. For though he does eventually purport to show that justice is preferable to injustice, the justice he attempts to prove this of is not at all the same justice that Glaucon and Adeimantus have in mind. Plato has simply equivocated on the term "iustice," meaning at one time the set of acts generally considered just,s but at another time a certain order in the individual's soul. He has purported to show that an individual with a well-ordered soul reaps advantages, but unless he can show a clear relation between this "Platonic" notion of justice and the "vulgar" notion of justice, the notion which Cephalus, Polemarchus, Thrasymachus, Glaucon and Adeimantus have in mind, he will not have answered the brothers' question, and will thus have avoided the central problem of the Republic. The relation he has to establish is, Sachs claims, that Platonic justice is a necessary and a sufficient condition for vulgar justice. Then he could argue that since he has shown that a man reaps advantages just to the extent that he is Platonically just, (1) a vulgarly unjust individual will not reap more advantages than a vulgarly just one (on the grounds that Platonic justice entails vulgar justice), and (2) a vulgarly just man will reap more advantages than a vulgarly... (shrink)

The Frege Geach problem was rst raised by ? (1939: 33•34) and independently by ? (1958, 1960, 1965) and Searle (1962, 1969) and was originally directed at expressivist proposals such as Ayer's (1946: 108) emotivism: It is worth mentioning that ethical terms do not serve only to express feeling. They are calculated also to arouse feeling, and so to stimulate action. . . . In fact we may de ne the meaning of the various ethical words in terms both of (...) the di erent feelings they are ordinarily taken to express, and also the di erent responses which they are calculated to provoke. Ayer's talk of `de ning' the meanings of ethical words suggests that he identi ed the meaning of an ethical word with the attitudes it expresses and provokes. Ayer's emotivism is subject to the Frege Geach problem because it is a form of atomistic reduction. It is atomistic in that it assumes a one•one correlation between the meanings of ethical words and the linguistic actions they perform (such as the expression and provoca• tion of the relevant attitudes). It is a reduction in that it identi es the meaning of an ethical word with attitudes it expresses and provokes. Atomistic reductions face the following dilemma: Suppose that freestanding and embedded occurrences of `wrong' mean the same. The problem is that words can occur in embedded contexts and fail to express the attitudes they do in freestanding contexts. This di culty would be avoided if the atomistic reduction applied only to the meaning of freestanding occurrences. However, if the account applies only to freestanding occurrences, then it is incomplete, for the expressivist would lack an account of the meaning of ethical words in embedded contexts. Furthermore, some guaran• tee must be given that freestanding and embedded occurrences mean the same despite their meanings being di erently determined. For, if freestanding and embedded occurrences dif• fer in meaning, then the expressivist is apparently committed to the invalidity of recognized forms of valid argument (due to the fallacy of equivocation).. (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)

The method of supervaluations offers an elegant procedure by which semantic theory can come to terms with sentences that, for one reason or another, lack truth-value. I argue, however, that this method rests on a fundamental mistake, and so is unsuitable for semantics. The method of supervaluations, I argue, assigns semantic values to sentences based not on the semantic values of their components, but on the values of other, perhaps homophonic, but nevertheless distinct, expressions. That is because supervaluations are generated (...) from classical valuations which necessarily require reinterpreting the component expressions, but the reinterpretation of an expression is tantamount to the introduction of a new expression, or alternatively, to a shift to an entirely new language. To confuse the expression of the language for which a semantic theory is developed with its reinterpreted counterpart, is to commit a fallacy of equivocation. That is the flaw within the method of supervaluations. We see it manifest in a number of examples. (shrink)

In the discussion of personal identity, from his Treatise of Human Nature, David Hume reaches a famous, if notorious conclusion: there is no self. We are “nothing but a bundle or collection of different perceptions” (T 252). My argument is that Hume's thesis on the self rests on a questionable rejection of a rival view that appears to commit the fallacy of equivocation. Along the way I identify a few possible problems with Hume's overall analysis of the self. (...) My argument is that these diffi culties center around the conceptual apparatus Hume relies on to explain and analyze consciousness. (shrink)

This paper claims that there is a plausible sense in which validity is a matter of truth preservation relative to interpretations of the sentences that occur in an argument, although it is not the sense one might have in mind. §1 outlines three independent problems: the first is the paradox of the sorites, the second concerns the fallacy of equivocation, and the third arises in connection with the standard treatment of indexicals. §2 elucidates the claim about validity, while (...) §§3-5 show how the three problems outlined can be handled in accordance with it. §6 explains how the claim squares with the traditional idea that validity is related to formality, and in particular with a broadly accepted definition based on that idea, the model-theoretic definition of logical consequence. Unlike other works on the subject, this paper does not focus on necessity. It is not its intention to provide a characterization of necessity that conforms to some ideal of rigour or to some pre-theoretical understanding of validity. What follows can be taken as conditional on the assumption that such a characterization can be provided. (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)

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)