This chapter contains sections titled: Philosophers' fallacies and historians' fallacies Five Historical Fallacies Historical Fallacies of Philosophers and the Relationship of Philosophy to its History Bibliography Further Reading.

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.

Simple extrapolation is the orthodox approach to extrapolating from clinical trials in evidence-based medicine: extrapolate the relative effect size from the trial unless there is a compelling reason not to do so. I argue that this method relies on a myth and a fallacy. The myth of simple extrapolation is the idea that the relative risk is a ‘golden ratio’ that is usually transportable due to some special mathematical or theoretical property. The fallacy of simple extrapolation is an (...) unjustified argument from ignorance: we conclude that the relative effect size is transportable in the absence of evidence to the contrary. In short, simple extrapolation is a deeply problematic solution to the problem of extrapolation. (shrink)

The fallacy of ignoring qualifications, or secundum quid et simpliciter, is a deceptive strategy that is pervasive in argumentative dialogues, discourses, and discussions. It consists in misrepresenting an utterance so that its meaning is broadened, narrowed, or simply modified to pursue different goals, such as drawing a specific conclusion, attacking the interlocutor, or generating humorous reactions. The “secundum quid” was described by Aristotle as an interpretative manipulative strategy, based on the contrast between the “proper” sense of a statement and (...) its meaning taken absolutely or in a certain respect. However, how can an “unqualified” statement have a proper meaning different from the qualified one, and vice versa? This “linguistic” fallacy brings to light a complex relationship between pragmatics, argumentation, and interpretation. The secundum quid is described in this paper as a manipulative argument, whose deceptive effect lies in its pragmatic dimension. This fallacy is analyzed as a strategy of decontextualization lying at the interface between pragmatics and argumentation and consisting of the unwarranted passage from an ut-terance to its semantic representation. By ignoring the available evidence and the presumptive interpretation of a statement, the speaker places it in a different context or suppresses textual and contextual evidence to infer a specific meaning different from the presumable one. (shrink)

Agent-​​based modeling is showing great promise in the social sciences. However, two misconceptions about the relation between social macroproperties and microproperties afflict agent-based models. These lead current models to systematically ignore factors relevant to the properties they intend to model, and to overlook a wide range of model designs. Correcting for these brings painful trade-​​offs, but has the potential to transform the utility of such models.

It is argued that wishful thinking is an informal logical fallacy and is distinguished from self-deception and delusion. Wishful thinking is unique in that a human desire is the starting point, which remains unfulfilled because of insufficient or no evidence or ignorance, despite the agent’s beliefs. It contrasts with self-deception, a more serious mental state in which the agent hides or denies the truth from himself, regardless of whether it is desired. Wishful thinking is a logical fallacy, (...) depending on the agent’s genuine beliefs as an epistemic dilemma or merely a harmless fantasy. pp. 30–42. (shrink)

Deep brain stimulation (DBS) is an effective treatment for the debilitating motor symptoms of Parkinson’s disease and other neurological disorders. However, clinicians and commentators have noted that DBS recipients have not necessarily experienced the improvements in quality of life that would be expected, due in large part to what have been described as the ‘psychosocial’ impacts of DBS. The premise of this paper is that, in order to realise the full potential of DBS and similar interventions, clinical services need to (...) be arranged in such a way that these psychosocial dimensions are recognised and managed. Our starting point is that the psychosocial effects of DBS ‘in the field’ present us with analytically-useful disruptions: they disturb and foreground deeply held assumptions relating to the individual, health and its treatment, and which in a crude form manifest as the myth of technological solutionism within health care. Drawing on scholarship in medical sociology and science and technology studies (STS), we argue that DBS brings to the fore the relational dimensions of personhood, and demonstrates the emotional and social turmoil that can result if the relational dimensions of personhood are ignored by clinical services. In light of this, we argue that DBS should be implemented within a regime of care. Drawing on ethnographic research of a paediatric DBS clinical service, we provide an example of a regime of care, and conclude by reflecting on what other DBS services might learn from this paediatric service. (shrink)

In a seminal article in the Journal of Medical Ethics, Søren Holm and Tuja Takala analysed two protechnology arguments in bioethics: the hopeful principle and the automatic escalator. They showed how these arguments relate to problematic arguments such as the precautionary principle and the empirical slippery slope argument, and argued that they should be used with great caution. The present article investigates the recent debate on proton beam therapy, where the hopeful principle and the automatic escalator are identified. However, the (...) debate reveals a series of other arguments that deserve similar caution. An analysis of these arguments indicates that the roots of their fallacies are to be found in the ignorance of the uncertainties about risks and benefits and an overly optimistic attitude towards technology and progress. The point is not to argue against proton therapy, but rather to point out that flawed arguments for new technologies, such as proton therapy, can actually hamper their implementation instead of promoting it. Patients deserve the best technology available, not only on the basis of the best available evidence, but also on the basis of the best arguments. (shrink)

This investigation uses the technique of the profile of dialogue as a tool for the evaluation of arguments from ignorance (also called lack-of-evidence arguments, negative evidence, ad ignorantiam arguments and ex silentio arguments). Such arguments have traditionally been classified as fallacies by the logic textbooks, but recent research has shown that in many cases they can be used reasonably. A profile of dialogue is a connected sequence of moves and countermoves in a conversational exchange of a type that is (...) goal-directed and can be represented in a normative model of dialogue. Selected case studies are used to probe special features of using the profile technique as applied to arguments from ignorance of a kind that occur frequently in everyday conversational exchanges. One of these special features is the use of Gricean implicature. Another is the need to use negative profiles of argument. (shrink)

An infonnal fallacy is a reasoning error with three features: the reasoning employs an implicit cogent pattern; the fallacy results from one or more false premises; there is culpable ignorance or deception associated with the falsity of the premises. A reconstruction and analysis of the cogent reasoning patterns in fourteen standard infonnal fallacy types plus several variations are given. Defense of the CMR account covers: a general failure to apply the principle of charity in informal (...) class='Hi'>fallacy contexts; empirical evidence for it; how it explains Walton's point that there are both fallacious and non-fallacious instances of fallacy types; how it avoids most "relevance" problems, pennits clearer taxonomizing, and promises pedagogical advantages; how it solves a "demarcation problem.". (shrink)

Social media is known to be one of the finest achievements of the 21st century. However, it is no surprise that there are two sides to every coin. While there are a lot of advantages of social media in our day-to-day life it is difficult to ignore its negative consequences. As the interactions between people have increased so have the standards and expectations of people and undoubtedly, so has the mental distress that people constantly face. Multiple researches conducted on the (...) negative impacts of social media indicate towards the downside of social media, especially it's negative footprint on people's identities, social life, mental health and emotional well-being. Although there are various modalities that have been used to identify and solve the problems that people experience with social media, there are other modalities of counseling that have the potential to be effective and helpful but have not been explored in this regard. One such modality is Logic-Based Therapy. Logic-Based Therapy and Consultation is a philosophy-based practice that aims to help identify the different emotional and behavioral ways in which people upset themselves by their own faulty thinking. LBT identifies a number of fallacies or incorrect reasonings that people use very frequently in their lives and also suggests ways in which individuals can learn to cope with these fallacies. A lot of the fallacies identified by LBT can be seen in practice through social media. This paper aims at providing an insight into the reality of social media and online presence while highlighting the most common fallacies that people commit in emotional and behavioral reasoning as identified by LBT. The paper will also explore how and why people often commit these fallacies and suggest some antidotes to combat these fallacies. (shrink)

Five errors that fit under the category of jumping to a conclusion are identified: (1) arguing from premises that are insufficient as evidence to prove a conclusion (2) fallacious argument from ignorance, (3) arguing to a wrong conclusion, (4) using defeasible reasoning without being open to exceptions, and (5) overlooking/suppressing evidence. It is shown that jumping to a conclusion is best seen not as a fallacy itself, but as a more general category of faulty argumentation pattern underlying these (...) errors and some related fallacies. (shrink)

_Arguments from Ignorance _explores the situations in which the argument from ignorance functions as a respectable form of reasoning and those in which it is indeed fallacious. Douglas Walton draws on everyday conversations on all kinds of practical matters in which the _argumentum ad ignorantiam _is used quite appropriately to infer conclusions. He also discusses the inappropriate use of this kind of argument, referring to various major case studies, including the Salem witchcraft trials, the McCarthy hearings, and the (...) Alger Hiss case. This book makes an original contribution in the areas of argumentation theory and informal logic, contending that, despite its traditional classification as a fallacy, the argument from ignorance is a genuine, very common, and legitimate type of argumentation with an identifiable structure. But the book is also interdisciplinary in scope, explaining many widely interesting and controversial subjects in artificial intelligence, medical education, philosophy of science, and philosophy of law in a clear way that makes it accessible to a broad range of readers. (shrink)

The respect for one’s conscience is rooted in a broader respect for the human person. The conscience represents a person’s ability to identify the values and goods that inform her moral identity. Ignoring or overriding a person’s conscience can lead to significant moral and emotional distress. Refusals to respect a person’s conscientious objection to cases of killing are a source of incisive distress, since judgments that it is impermissible to kill so-and-so are typically held very strongly and serve as central (...) moral commitments in one’s moral identity. I think it is wrong for a college basketball coach to pay his players, but I think it is really wrong to kill people. This article argues that any and all arguments for not respecting a conscientious objection to abortion commit a deontic fallacy. Briefly, arguments for the permissibility of abortion are structurally such that abortion is at best permissible, not obligatory. Now, arguments to justify overriding or ignoring a person’s objection to performing action (α) must understand action (α) as being obligatory. Thus, arguments for ignoring conscientious objections to performing abortion are incongruent with the actual philosophical justifications for abortion. Such arguments, then, commit a deontic fallacy. (shrink)

The replication (replicability, reproducibility) crisis in social psychology and clinical medicine arises from the fact that many apparently well-confirmed experimental results are subsequently overturned by studies that aim to replicate the original study. The culprit is widely held to be poor science: questionable research practices, failure to publish negative results, bad incentives, and even fraud. In this article I argue that the high rate of failed replications is consistent with high-quality science. We would expect this outcome if the field of (...) science in question produces a high proportion of false hypotheses prior to testing. If most of the hypotheses under test are false, then there will be many false hypotheses that are apparently supported by the outcomes of well conducted experiments and null hypothesis significance tests with a type-I error rate (α) of 5%. Failure to recognize this is to commit the fallacy of ignoring the base rate. I argue that this is a plausible diagnosis of the replication crisis and examine what lessons we thereby learn for the future conduct of science. (shrink)

Computers have transformed science and help to extend the boundaries of human knowledge. However, does the validation and diffusion of results of computational inquiries and computer simulations call for a novel epistemological analysis? I discuss how the notion of novelty should be cashed out to investigate this issue meaningfully and argue that a consequentialist framework similar to the one used by Goldman to develop social epistemologySocial epistemology can be helpful at this point. I highlight computational, mathematical, representational, and social stages (...) on which the validity of simulation-based belief-generating processes hinges, and emphasize that their epistemic impact depends on the scientific practices that scientists adopt at these different stages. I further argue that epistemologists cannot ignore these partially novel issues and conclude that the epistemology of computational inquiries needs to go beyond that of models and scientific representations and has cognitive, social, and in the present case computational, dimensions. (shrink)

One of the distinguishing features of modern and contemporary philosophy is the fact that they are consistently grounded by the epistemological outlook. The essence of this outlook is the modern conception of knowledge, which could not exist without a proper evaluation of a systemic success — or, even more importantly, in some sense a successful failure — of modern science. The only way for us to perceive the lack of error as the basis of a reliable knowledge is to recognize (...) our own fallacies. In such a way the ancient cosmocentrical worldview and the medieval theocentrical epistemology have been changed by the scientistic agnoiological approach, which had its origins in the modern times and includes the primary requirement to treat the fundamental ignorance as a reliable foundation of knowledge. In this article the reader is provided with a detailed exposition of the phenomenon of self-grounding of epistemological modernity. Adopting the terminology used in the metaphilosophical reflexion, we could reveal the dual origin of contemporary philosophical discourse, the basic principles which ground the epistemological claims, and also demonstrate the necessity of constant efforts when seeking to avoid solipsism and the paradoxical nature of modern epistemology. (shrink)

This chapter focuses on one of the common fallacies in Western philosophy, etymological fallacy (EF). To understand the EF fully, it is important to break down the word etymology, which is a practice that in itself informs the conversation surrounding the fallacy. EF is a willful use of a former definition of a word that has changed meaning and/or developed new connotations because the change does not benefit the one committing the fallacy. To avoid committing the EF, (...) individuals should approach language as they would a scientific process: they may hypothesize the word means X, but after further research and consideration, realize that indeed a word now means Y. Either way, the changing nature of language must be considered and individuals should be learned enough and flexible enough to communicate within the time and culture they inhabit. Clinging to etymons while ignoring the evolution and everyday use of language is neither logical nor truthful. (shrink)

This paper explains a fallacy that often arises in theorizing about human minds. I call it the Factual Belief Fallacy. The Fallacy, roughly, involves drawing conclusions about human psychology that improperly ignore the large backgrounds of mostly accurate factual beliefs people have. The Factual Belief Fallacy has led to significant mistakes in both philosophy of mind and cognitive science of religion. Avoiding it helps us better see the difference between factual belief and religious credence; seeing that (...) difference in turn enables us to pose interesting normative questions about various mental states labeled “belief.”. (shrink)

The public must make assessments of a range of health-related issues. However, these assessments require scientific know-ledge which is often lacking or ineffectively utilized by the public. Lay people must use whatever cognitive resources are at their disposal to come to judgement on these issues. It will be contended that a group of arguments—so-called informal fallacies—are a valuable cognitive resource in this regard. These arguments serve as cognitive heuristics which facilitate reasoning when knowledge is limited or beyond the grasp of (...) reasoners. The results of an investigation into the use of these arguments by the public are reported. (shrink)

We have been oversold on the base rate fallacy in probabilistic judgment from an empirical, normative, and methodological standpoint. At the empirical level, a thorough examination of the base rate literature (including the famous lawyer–engineer problem) does not support the conventional wisdom that people routinely ignore base rates. Quite the contrary, the literature shows that base rates are almost always used and that their degree of use depends on task structure and representation. Specifically, base rates play a relatively larger (...) role in tasks where base rates are implicitly learned or can be represented in frequentist terms. Base rates are also used more when they are reliable and relatively more diagnostic than available individuating information. At the normative level, the base rate fallacy should be rejected because few tasks map unambiguously into the narrow framework that is held up as the standard of good decision making. Mechanical applications of Bayes's theorem to identify performance errors are inappropriate when (1) key assumptions of the model are either unchecked or grossly violated, and (2) no attempt is made to identify the decision maker's goals, values, and task assumptions. Methodologically, the current approach is criticized for its failure to consider how the ambiguous, unreliable, and unstable base rates of the real world are and should be used. Where decision makers' assumptions and goals vary, and where performance criteria are complex, the traditional Bayesian standard is insufficient. Even where predictive accuracy is the goal in commonly defined problems, there may be situations (e.g., informationally redundant environments) in which base rates can be ignored with impunity. A more ecologically valid research program is called for. This program should emphasize the development of prescriptive theory in rich, realistic decision environments. (shrink)

In the eighth chapter of De Sophisticis Elenchis, Aristotle introduces a mode of sophistical refutation that constitutes an addition to the taxonomy of the earlier chapters of the treatise. The new mode is pseudo-scientific refutation, or “the [syllogism or refutation] which though real, [merely] appears appropriate to the subject matter”. Against the grain of its most commonly accepted reading, I argue that Aristotle is not concerned in SE 8 to establish that both the apparent refutations of SE 4–7 and pseudo-scientific (...) refutations issue in false conclusions. His concern rather is to provide a causal analysis of both classes of apparent refutation alike which will explain why both kinds of apparent refutation are sophistical – and whose solutions are therefore the task of no special science but of a dialectical σλλογιστιϰή τέχνη. I conclude my analysis with the observation that Aristotle exploits the results of SE 8 to fend off inSE 9, 10, and 11 respectively a triad of threats to the very existence of a τέχνη of the resolution of sophistical refutation. The three threats are: the impossibility of omniscience; the relativity of semantic beliefs; and the incapacity of a questioner ignorant of a science to expose the ignorance of a pretender to scientific expertise. (shrink)

This chapter focuses on one of the common fallacies in Western philosophy called appeal to ignorance (or ad ignorantiam). A few passages from classical philosophical texts may commit an argumentum ad ignorantiam. Richard Robison develops another way of launching an ad ignorantiam that works by using a rhetorical question to commit the illicit move: Woods and Walton describe the appeal to ignorance as a fallacy “located within confirmation theory as a confusion between the categories of 'lack of (...) confirming evidence' and 'presence of disconfirming evidence'”. Wreen has argued that the ad ignorantiam maneuver is not fallacious, whereas other philosophers accept the general fallacy of an appeal to ignorance but note some instances where lack of evidence does provide good inductive grounds for some statement. (shrink)

lt is now commonplace in fallacy inquiry for many of the traditional informal fallacies to be viewed as reasonable or nonfallacious modes of argument. Central to this evaluative shift has been the attempt to examine traditional fallacies within their wider contexts of use. However, this pragmatic turn in fallacy evaluation is still in its infancy. The true potential of a contextual approach in the evaluation of the fallacies is yet to be explored. I examine how, in the context (...) of scientific inquiry, certain traditional fallacies function by conferring epistemic gains upon inquiry. Specifically, I argue that these fallacies facilitate the progression of inquiry, particularly in the initial stages ofinquiry when the epistemic context is one of uncertainty. The conception of these fallacies that emerges is that of heuristics of reasoning in contexts of epistemic uncertainty. (shrink)

Journal Name: Apeiron Issue: Ahead of print.

This paper explores the question of how films may be used to enhance the teaching of fallacies. Theoretical questions about the nature of fallacies will be addressed along with pedagogical issues. The paper is structured around a case study—an examination of various arguments from ignorance as articulated by fictional characters in the 1964 Hammer horror production of The Gorgon.

Our main aim in this paper is to contribute towards a better understanding of the epistemology of absence-based inferences. Many absence-based inferences are classified as fallacies. There are exceptions, however. We investigate what features make absence-based inferences epistemically good or reliable. In Section 2 we present Sanford Goldberg’s account of the reliability of absence-based inference, introducing the central notion of epistemic coverage. In Section 3 we approach the idea of epistemic coverage through a comparison of alethic and evidential principles. The (...) Equivalence Schema–a well-known alethic principle–says that it is true that $p$ if and only if $p$ . We take epistemic coverage to underwrite a suitably qualified evidential analogue of the Equivalence Schema: for a high proportion of values of $p$ , subject $S$ has evidence that $p$ due to her reliance on source $S^{*}$ if and only if $p$ . We show how this evidential version of the Equivalence Schema suffices for the reliability of certain absence-based inferences. Section 4 is dedicated to exploring consequences of the Evidential Equivalence Schema. The slogan ‘absence of evidence is evidence of absence’ has received a lot of bad press. More elaborately, what has received a lot of bad press is something like the following idea: absence of evidence sufficiently good to justify belief in $p$ is evidence sufficiently good to justify belief in $\sim p$ . A striking consequence of the Evidential Equivalence Schema is that absence of evidence sufficiently good to justify belief in p is evidence sufficiently good to justify belief in $\sim p$ . We establish this claim in Section 4 and show how this supports the reliability of an additional type of absence-based inference. Section 4 immediately raises the following question: how can we make philosophically good sense of the idea that absence of evidence is evidence of absence? We address this question in Section 5. Section 6 contains some summary remarks. (shrink)

SummaryThis paper is a critical examination of argumentum ad ignorantiam, or arguing from ignorance. Ad ignorantiam is regarded as a fallacy, and certainly no route to knowledge, by most philosophers. However, case studies of ad ignorantiam are almost non‐existent, and theoretical discussions few in number. Thus this paper begins with a number of case studies. From them some morals are drawn. The morals concern the interpretation and evaluation of arguments in general and the nature and epistemic value of (...) ad ignorantiam in particular. Two theoretical discussions of the argument‐type are next considered, those of Richard Robinson and John Woods and Douglas Walton. I conclude that there is no general fallacy of ad ignorantiam– no argument is fallacious just because it's an ad ignorantiam– and that sometimes no reason is good reason. (shrink)

Arguments from ignorance should be schematized: It has not been proven false that p. So it is possible that p. So, it is reasonable to believe p. Also, in opposition to standard views they should be distinguished from burden of proof and absence of evidence arguments. Much of the persuasiveness of such arguments can be located in the slippery uses of "possible." Besides equivocations on "possible" the argument is a fallacy for two reasons. First, the possibility implied by (...) the first premise does not yield the serious possibility that is needed for establishing the conclusion. Second, ignorance is never sufficient reason for belief, only adequate evidence. (shrink)

In Theory and Problems of Logic, Nolt et al. (1998, p. 203) claim that the following argument forms are fallacious: (a) It has not been proved that p. Therefore, ∼p. (b) It has not been proved that ∼p. Therefore, p. Accordingly, they argue that the following instances of (a) and (b) are also fallacious. (ai) No one has ever proved that God exists. Therefore, God does not exist. (bi) No one has ever proved that God does not exist. Therefore, God (...) exists. Nolt/Rohatyn/Varzi’s verdict on arguments from ignorance is acceptable: “Nothing about the existence of God follows from our inability to prove God’s existence or nonexistence (i.e., from our ignorance about the matter)” (p. 203). However, since their analysis glosses over the role played by our epistemic efforts, their example might lead one to believe that theism and atheism are in the same predicament. Nevertheless, as I am about to argue, the weakness of the known arguments in favor of the existence of God coupled with the existence of an asymmetry between positive and negative empirical existential propositions determines a presumption in favor of the atheist that Nolt/Rohatyn/Varzi’s sketchy analysis of arguments from ignorance obscures. (shrink)

One of the most irritating habits of analytic philosophers when they show a passing interest in the work of philosophers from the past is the professed ignorance of textual and philological detail. This used to be worse than it is in current analytical philosophy. Many detailed scholarly readings that roughly can be categorised as belonging to the analytic school of philosophy are published now that show great care for exegesis and philosophical argument in equal measure. But wilful exegetical (...) class='Hi'>ignorance of historical philosophical texts is still ubiquitous among philosophers who technically don’t work in the history of philosophy. It’s often seen as a badge of honour to be merely interested in the philosophical argument that can be based on Kant, say, rather than in an exegesis of Kant’s text. This is often also portrayed in terms of the difference between offering Kantian style arguments and engaging in Kant scholarship. Kantianism is not the same as Kant scholarship, it is argued, and the former can be wholly detached from the latter, as if one could indeed judge what is Kantian without having studied Kant. One can of course legitimately pursue Kantian philosophy without at the same time engaging in Kant scholarship, but Kantian philosophy worthy of the name cannot not be informed by solid scholarship. ... (shrink)

Is science in the midst of a crisis of replicability and false discoveries? In a recent article, Alexander Bird offers an explanation for the apparent lack of replicability in the biomedical sciences. Bird argues that the surprise at the failure to replicate biomedical research is a result of the fallacy of neglecting the base rate. The base-rate fallacy arises in situations in which one ignores the base rate—or prior probability—of an event when assessing the probability of this event (...) in the light of some observed evidence. By extension, the replication crisis would result from ignoring the low prior probability of biomedical hypotheses. In this paper, my response to Bird’s claim is twofold. First, I show that the argument according to which the replication crisis is due to the low prior of biomedical hypotheses is incomplete. Second, I claim that a simple base-rate fallacy model does not account for some important methodological insights that have emerged in discussions of the replication crisis. (shrink)

The purpose of this paper is twofold: to give a good account of the argument from ignorance, with a presumptive argumentation scheme, and to raise issues on the work of Walton, the nature of abduction and the concept of epistemic closure. First, I offer a brief disambiguation of how the terms 'argument from ignorance' and 'argumentum ad ignorantiam' are used. Second, I show how attempts to embellish this form of reasoning by Douglas Walton and A.J. Kreider have been (...) unnecessary and unhelpful. Lastly, I offer a full and effective account of the argument from ignorance and discuss the lessons of the analysis.Le but de cet article est double: donner un bon compte rendu de l'argument par l'ignorance, avec un schème d'argumentation présomptif, et soulever des questions sur certains aspects de l’œuvre de Walton, la nature des raisonnements abductifs et le concept de fermeture épistémique. Premièrement, j'offre une brève désambiguïsation de la façon dont les termes «argument par l'ignorance» et «argumentum ad ignorantiam» sont utilisés. Deuxièmement, je montre comment les tentatives de Douglas Walton et de A.J. Kreider d'embellir cette forme de raisonnement ont été ni nécessaires et ni utiles. Enfin, j'offre un compte-rendu complet et utile de l'argument par l'ignorance et je discute des leçons de l'analyse. (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)

Connecting research and production, art research represents a breaking of the barrier between creation and academia. However, there is also a contradiction contained in this kind of research deriving from its methods, since the process of art-based practice must, by its very nature, involve the subjectivity of the artist. I use my own studies as the research object to discuss this issue, and this article presents the problems I encountered during my artistic practice and research of ambiguous roles. This paper (...) has two main points of focus. First, I explore how the fallacy of self-referentiality is presented in paintings and films, and, second, I draw on my short film practice during my master’s study period to explain how the shots present a continuum in relation to the “absent one” and produce interface effects. However, the second point is not necessarily the result of the first one. This kind of connection and contradiction between practice and cognition in the process of art research is that I will analyse and discuss here. (shrink)

Feminist critics of evolutionary psychology are often accused of committing the naturalistic fallacy, that is, of inferring certain normative conclusions from evolutionary psychology’s purely descriptive accounts. This article refutes the accusation of the naturalistic fallacy, by showing that evolutionary psychology’s accounts of human behavior are not purely descriptive, but rather grounded on biased value judgments. A paradigmatic example is Randy Thornhill and Craig Palmer’s well-known book A Natural History of Rape. I argue that at least three biased judgments (...) are at work in Thornhill and Palmer’s evolutionary psychology account of rape: (1) adaptationist approaches to evolution, (2) willful ignorance of cultural and social context, and (3) binary understanding of gender and sex. In that Thornhill and Palmer’s account cannot hold without the three biased value judgments, it is not a purely factual description of rape. Therefore, feminist concerns over its normative implications do not commit the naturalistic fallacy, as it is not the case that they infer a normative conclusion from a pure description. (shrink)

ABSTRACTIlya Somin's Democracy and Political Ignorance suffers from the fallacy of composition: It uses individual-level evidence about political behavior to draw inferences about the preferences and actions of the public as a whole. But collective public opinion is more stable, consistent, coherent, and responsive to the best available information, and more reflective of citizens’ underlying values and interests, than are the opinions of most individual citizens. Because Somin tends to blame the general public for deficiencies in our political (...) processes, he neglects the distorting roles of such elite-level factors as lies and misleading rhetoric from public officials, collusion between the major parties, and money run amok in our elections. Instead, he seeks solutions in such counterproductive measures as restricting the franchise, delegating decisions to unelected “experts,” and decentralizing and downsizing government. (shrink)

The earliest debate on the argument from ignorance emerged in Islamic rational theology around the fourth/tenth century, approximately seven centuries before John Locke identified it as a distinct type of argument. The most influential defences of the epistemological principle that are encountered in Mu sources, particularly r and al-Malimar, and was eventually classed as a fallacy by Fakhr al-Dzyat al-l contains the most definitive and comprehensive refutation of classical kalm summa. According to the eighth/fourteenth-century historian Ibn Khaldarism took (...) during the sixth/twelfth century. (shrink)

This book provides theoretical tools for evaluating the soundness of arguments in the context of legal argumentation. It deals with a number of general argument types and their particular use in legal argumentation. It provides detailed analyses of argument from authority, argument ad hominem, argument from ignorance, slippery slope argument and other general argument types. Each of these argument types can be used to construct arguments that are sound as well as arguments that are unsound. To evaluate an argument (...) correctly one must be able to distinguish the sound instances of a certain argument type from its unsound instances. This book promotes the development of theoretical tools for this task. (shrink)

Meillassoux seeks knowledge of transcendental reality, blaming Kant for the ‘correlationist’ proscription of independent access to either thought or being. For Meillassoux, correlationism blocks an account of the meaning of ‘ancestral statements’ regarding reality prior to humans. I examine three charges on which Meillassoux’s argument depends: (1) Kant distorts ancestral statements’ meaning; (2) Kant fallaciously infers causality’s necessity; (3) Kant’s transcendental idealism cannot grasp ‘the great outdoors’. I reject these charges: (1) imposes a Cartesian misreading, hence Meillassoux’s false assumption that, (...) for Kant, objects don’t exist without subjects; (2) misreads Kant, who infers causality’s necessity from the possibility of experience; (3) casts Kant’s idealism as subjective, ignoring his perspectival portrayal of it. (shrink)

ABSTRACT I have two main theses. The first is that the inference from accepting an educational aim, especially an ideal aim such as self-realization or critical thinking, to a conclusion as to the content or structure of a curriculum is fallacious. The first thesis should not be controversial. But even if so, the aims-curricula fallacy is readily committed, and that calls for explanation. My second thesis is that the aims–curricula fallacy is often committed because the possibilities for realizing (...) educational aims through indirect methods or learning is ignored. (shrink)

I have two main theses. The first is that the inference from accepting an educational aim, especially an ideal aim such as self-realization or critical thinking, to a conclusion as to the content or structure of a curriculum is fallacious. The first thesis should not be controversial. But even if so, the aims-curricula fallacy is readily committed, and that calls for explanation. My second thesis is that the aims–curricula fallacy is often committed because the possibilities for realizing educational (...) aims through indirect methods or learning is ignored. (shrink)

In popular articles that play down the genetical differences among human populations, it is often stated that about 85% of the total genetical variation is due to individual differences within populations and only 15% to differences between populations or ethnic groups. It has therefore been proposed that the division of Homo sapiens into these groups is not justified by the genetic data. This conclusion, due to R.C. Lewontin in 1972, is unwarranted because the argument ignores the fact that most of (...) the information that distinguishes populations is hidden in the correlation structure of the data and not simply in the variation of the individual factors. The underlying logic, which was discussed in the early years of the last century, is here discussed using a simple genetical example. (shrink)

As an aspiring science in the nineteenth and early twentieth centuries, psychology pursued quantification. A problem was that degrees of psychological attributes were experienced only as greater than, less than, or equal to one another. They were categorised as intensive magnitudes. The meaning of this concept was shifting, from that of an attribute possessing underlying quantitative structure to that of a merely ordinal attribute . This fluidity allowed psychologists to claim that their attributes were intensive magnitudes and measurable . This (...) claim was supported by an argument that order entails quantity. As adapted by psychometricians, the argument was that if an attribute is ordered, then the differences between its degrees are quantitative and, therefore, measurable. However, in a paper ignored in psychology for six decades, the issue was resolved mathematically and the resolution implies that the psychometricians’ argument was fallacious. (shrink)

This study analyzes the ideals of responsibility and accountability, asking such questions as when it is legitimate to blame top officials of an organization for mistakes made by personnel below them in the bureaucratic hierarchy; when things go wrong in a large and complex organization like the Canadian Forces, who is responsible and accountable; and whether a plea of ignorance is a good excuse. The study also analyzes the doctrine of ministerial responsibility in both the British and Canadian parliamentary (...) traditions, asking whether it is realistic to expect that a government minister should be held responsible for everything that goes wrong in his/her department. Finally, traditional military values are examined, considering the kinds of attitudes and values expected from Canada's armed forces and the differences between the military and civilian sectors. (shrink)

The main thesis of Heyes' book is that all of the domain-specific learning mechanisms that make the human mind so different from the minds of other animals are culturally created and culturally acquired gadgets. The only innate differences are some motivational tweaks, enhanced capacities for associative learning, and enhanced executive function abilities. But Heyes' argument depends on contrasting cognitive gadgets with cognitive instincts, which are said to be innately specified. This ignores what has for some years been the mainstream nativist/anti-empiricist (...) view, which commits only to partially specified learning systems that become elaborated and built through domain-specific learning. (shrink)