According to Peter van Inwagen, C. S. Lewis failed in his attempt to undermine naturalism with his Argument from Reason. According to van Inwagen, Lewis provides no justification for his central premise, that naturalism is inconsistent with holding beliefs for reasons. What is worse, van Inwagen argues that the main premise in Lewis's argument from reason is false. We argue that it is not false. The defender of Lewis's argument can make use of (...) the problem of mental causal drainage, a longstanding issue in philosophy of mind, to show how van Inwagen's objection fails. (shrink)

The argument from reason states that if naturalism is true, then our beliefs are caused by physical processes rather than being causally based in their reasons, so our beliefs are not knowledge—including the belief in naturalism itself. Recent critics of the argument from reason provide dual process replies to the argument from reason—our beliefs can have both a naturalistic cause/ explanation and be caused/explained by its reasons, thereby showing that naturalism can (...) accommodate knowledge. In this paper I consider three dual process replies and conclude that none of them are successful. (shrink)

This article attempts to clarify an “argument from reason” set forth by C. S. Lewis in his Miracles. While there are various contemporary interpretations of the argument, Lewis intended to expose the “cardinal difficulty of naturalism.” First, this article seeks to clarify both Lewis’s argument and the understanding of naturalism that it presupposes. Second, philosophers of religion—especially, William Hasker and Alvin Plantinga—have significantly contributed to the argument’s contemporary discussion, and so their views are addressed (...) with the intent to show how they differ from Lewis’s contribution. C. S. Lewis’s argument from reason was and is remains to this day philosophically timely and deserving of serious consideration. (shrink)

This chapter contains sections titled: Introduction The Nature of the Argument The History of the Argument Subdividing the Argument Five Popular Objections References.

It is a popular view thatpractical deliberation excludes foreknowledge of one's choice. Wolfgang Spohn and Isaac Levi have argued that not even a purely probabilistic self-predictionis available to thedeliberator, if one takes subjective probabilities to be conceptually linked to betting rates. It makes no sense to have a betting rate for an option, for one's willingness to bet on the option depends on the net gain from the bet, in combination with the option's antecedent utility, rather than on the (...) offered odds. And even apart from this consideration, assigning probabilities to the options among which one is choosing is futile since such probabilities could be of no possible use in choice. The paper subjects these arguments to critical examination and suggests that, appearances notwithstanding, practical deliberation need not crowd outself-prediction. (shrink)

In this paper I argue that the existence of human reason gives us good reason to suppose that God exists. If the world were as the materialist supposes it is, then we would not be able to reason to the conclusion that this is so. This contention is often challenged by the claim that mental and physical explanations can be given for the same event. But a close examination of the question of explanatory compatibility reveals that the (...) sort of explanation that would have to be given for the event of, say, inferring that atheism is true, is incompatible with the event being explicable as a purely physical product of a purely physical universe. (shrink)

This paper discusses a wide range of anti-naturalistic argument from reason due to Balfour, Haldane, Joad, Lewis, Taylor, Moreland, Plantinga, Reppert, and Hasker. I argue that none of these arguments poses a serious challenge to naturalists who are identity theorists. Further, I argue that some of these arguments do not even pose prima facie plausible challenges to naturalism. In the concluding part of my discussion, I draw attention to some distinctive differences between Hasker’s anti-naturalistic arguments and the (...) other anti-naturalistic arguments mentioned above. (shrink)

In C. S. Lewis’s Christian Apologetics: Pro and Con, I took the con in a debate with Victor Reppert about the soundness of Lewis’s famous “argument from reason.” Reppert then extended his argument in an article for Philosophia Christi; this article is my reply. I show that Reppert’s argument fails for three reasons. (1) It “loads the die” by falsely assuming that naturalism, by definition, can't include mental causation "on the basic level." (I provide multiple (...) examples of naturalist theories of mind that do exactly that). (2) Physical processes can reliably produce true beliefs. And (3) reasoning isn’t necessarily mental. (shrink)

The ontological argument from reason aims to show that deliberative reasoning cannot be located in a naturalistic ontology, because such reasoning requires a unified, enduring self with libertarian free will. The most popular way of avoiding this argument is to claim that some version of naturalistic compatibilism suffices for human reason, because even in a world of event causation, some creatures may be responsive to reason. In this paper, I argue that the best versions (...) of this approach either smuggle in nonnaturalistic commitments or else cannot distinguish between compulsive rationality merely occurring in someone’s brain from reasoning an agent does. (shrink)

In this essay I respond to the critical remarks made by Prof. Reppert in “Reply to Parsons and Lippard on the Argument from Reason” (present issue). I also provide a critique of Reppert’s original article, “The Argument from Reason,” in Philo vol. 2, no. 1 (Spring-Summer 1999).

_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)

In our exchange in the book, C. S. Lewis’s Christian Apologetics: Pro and Con, edited by Gregory Bassham, David Kyle Johnson argued that four naturalistic views, property dualism, the identity theory, epiphenomenalism, and eliminative materialism, can all meet the challenge posed by a C. S. Lewis–style argument from reason. I maintain that his response fails to take into account what a consistent naturalism is committed to, and that his defenses of these positions fail to put those positions (...) in the clear. (shrink)

This article demonstrates that typical restrictions which are imposed in dialogical logic in order to recover first-order logical consequence from a fragment of natural language argumentation are also forthcoming from preference profiles of boundedly rational players, provided that these players instantiate a specific player type and compute partial strategies. We present two structural rules, which are formulated similarly to closure rules for tableaux proofs that restrict players' strategies to a mapping between games in extensive forms and proof trees. (...) Both rules are motivated from players' preferences and limitations; they can therefore be viewed as being player-self-imposable. First-order logical consequence is thus shown to result from playing a specific type of argumentation game. The alignment of such games with the normative model of the Pragma-dialectical theory of argumentation is positively evaluated. But explicit rules to guarantee that the argumentation game instantiates first-order logical consequence have now become gratuitous, since their normative content arises directly from players' preferences and limitations. A similar naturalization for non-classical logics is discussed. (shrink)

This paper applies recent work on scripts and stories developed as tools of evidential reasoning in artificial intelligence to model the use of argument from analogy as a rhetorical device of persuasion. The example studied is Gerry Spence’s closing argument in the case of Silkwood v. Kerr-McGee Corporation, said to be the most persuasive closing argument ever used in an American trial. It is shown using this example how argument from analogy is based on (...) a similarity premise where similarity between two cases is modeled using the device of a story scheme from the hybrid theory of legal evidential reasoning (Bex in Arguments, stories and criminal evidence: a formal hybrid theory. Springer, Dordrecht 2011). It is shown how the rhetorical strategy of Spence’s argumentation in the closing argument interweaves argument from analogy with explanation through three levels. (shrink)

A new pragmatic approach, based on the latest developments in argumentation theory, analyzing appeal to expert opinion as a form of argument. Reliance on authority has always been a common recourse in argumentation, perhaps never more so than today in our highly technological society when knowledge has become so specialized—as manifested, for instance, in the frequent appearance of "expert witnesses" in courtrooms. When is an appeal to the opinion of an expert a reasonable type of argument to make, (...) and when does it become a fallacy? This book provides a method for the evaluation of these appeals in everyday argumentation. Specialized domains of knowledge such as science, medicine, law, and government policy have gradually taken over as the basis on which many of our rational decisions are made daily. Consequently, appeal to expert opinion in these areas has become a powerful type of argument. Challenging an argument based on expert scientific opinion, for example, has become as difficult as it once was to question religious authority. Walton stresses that even in cases where expert opinion is divided, the effect of it can still be so powerful that it overwhelms an individual's ability to make a decision based on personal deliberation of what is right or wrong in a given situation. The book identifies the requirements that make an appeal to expert opinion a reasonable or unreasonable argument. Walton's new pragmatic approach analyzes that appeal as a distinctive form of argument, with an accompanying set of appropriate critical questions matching the form. Throughout the book, a historical survey of the key developments in the evolution of the argument from authority, dating from the time of the ancients, is given, and new light is shed on current problems of "junk science" and battles between experts in legal argumentation. (shrink)

I. The argument from design or ‘teleological argument’ purports to be an inductive proof for the existence of God, proceeding from the evidence of the order exhibited by natural phenomena to the probable conclusion of a rational agent responsible for producing that order. The argument was severely criticized by David Hume in his Dialogues Concerning Natural Religion , and it was widely conceded that Hume's objections had cast serious doubt on the adequacy of the teleological (...) argument, if not destroyed its credibility entirely. However, there has been a recent reappraisal of this claim by R. G. Swinburne, who maintains that none of Hume's criticisms have any validity against a ‘carefully articulated version of the argument’. Using an analogical argument based on temporal regularities rather than on spatial regularities , Swinburne claims to have shown that the teleological argument is a legitimate inference to the best explanation whose force depends only on the strength of the analogy and on the degree to which the resulting theory makes explanation of empirical matters simpler and more coherent. Moreover, he claims to have shown that the argument provides support for the Christian monotheistic hypothesis and not merely for the weak claim that the universe was designed . This is an important claim since it has long been thought that Hume's most devastating blow was dealt when he showed that the teleological argument provides just as much support for the negation of certain propositions considered essential to Christian monotheism as it does for their affirmation. (shrink)

According to J. L. Schellenberg’s argument from the reasonableness of nonbelief, the fact that many people inculpably fail to find sufficient evidence for the existence of God constitutes evidence for atheism. Schellenberg argues that since a loving God would not withhold the benefits of belief, the lack of evidence for God’s existence is incompatible with divine love. I argue that Schellenberg has not successfully defended his argument’s two controversial premises, that God’s love is incompatible with his allowing (...) some to remain in doubt that he exists, and that the nonbelief of some agnostics is inculpable. From the standpoint of what Christians believe about God, there are plausible reasons, which Schellenberg has not succeeded in refuting, for thinking that all nonbelief is culpable. I argue also that a loving God could have reasons remaining hidden to some persons, which are consistent with his desire to draw all people to faith. (shrink)

The argument from silence is a pattern of reasoning in which the failure of a known source to mention a particular fact or event is used as the ground of an inference, usually to the conclusion that the supposed fact is untrue or the supposed event did not actually happen. Such arguments are widely used in historical work, but they are also widely contested. This paper surveys some inadequate attempts to model this sort of argument, offers a (...) new analysis using a Bayesian probabilistic framework that isolates the most problematic step in such arguments, illustrates a key problem besetting many uses of the argument, diagnoses the attraction of the argument in terms of a known human cognitive bias affecting the critical step, and suggests a standard that must be met in order for any argument from silence to have more than a very weak influence on historical reasoning. (shrink)

The Argument from Temporary Intrinsics is one of the canonical arguments against endurantism. I show that the two standard ways of presenting the argument have limited force. I then present a new version of the argument, which provides a more promising articulation of the underlying objection to endurantism. However, the premises of this argument conflict with the gauge theories of particle physics, and so this version of the argument is no more successful than its (...) predecessors. I conclude that no version of the Argument from Temporary Intrinsics gives us a compelling reason to favor one theory of persistence over another. (shrink)

In this paper, it is shown (1) that there are two schemes for argument from analogy that seem to be competitors but are not, (2) how one of them is based on a distinctive type of similarity premise, (3) how to analyze the notion of similarity using story schemes illustrated by some cases, (4) how arguments from precedent are based on arguments from analogy, and in many instances arguments from classification, and (5) that when similarity (...) is defined by means of episode schemes, we can get a clearer idea of how it integrates with the use of argument from classification and argument from precedent in case-based reasoning by using a dialogue structure. (shrink)

In this paper I defend what I call the argument from epistemic reasons against the moral error theory. I argue that the moral error theory entails that there are no epistemic reasons for belief and that this is bad news for the moral error theory since, if there are no epistemic reasons for belief, no one knows anything. If no one knows anything, then no one knows that there is thought when they are thinking, and no one knows (...) that they do not know everything. And it could not be the case that we do not know that there is thought when we believe that there is thought and that we do not know that we do not know everything. I address several objections to the claim that the moral error theory entails that there are no epistemic reasons for belief. It might seem that arguing against the error theory on the grounds that it entails that no one knows anything is just providing a Moorean argument against the moral error theory. I show that even if my argument against the error theory is indeed a Moorean one, it avoids Streumer's, McPherson's and Olson's objections to previous Moorean arguments against the error theory and is a more powerful argument against the error theory than Moore's argument against external world skepticism is against external world skepticism. (shrink)

At the heart of this book is the age-old question of how law and morality are related. The legal positivist, insisting on the separation of the two, explicates the concept of law independently of morality. The author challenges this view, arguing that there are, first, conceptually necessary connections between law and morality and, second, normative reasons for including moral elements in the concept of law. While the conceptual argument alone is too limited to establish a sufficiently strong connection between (...) law and morality, and the normative argument alone fails to address the nature of law, the two arguments together support a nonpositivistic concept of law, toppling legal positivism qua comprehensive theory of law. (shrink)

There are good grounds for seeing a deep opposition between reason and violence. Yet some forms of argument appear to link the two; and a prominent example is the argumentum ad baculum, where the premise contains a threat. Consideration of the connection between premise and conclusion in such an argument can, it seems, yield some cases where the status of the author of the threat renders the argument not only valid but also sound. Examples of such (...) arguments cluster in the areas near Pascal's Wager and Rawls' argument for justice. However even these arguments fail to effect a reconciliation between reason and violence. (shrink)

Referring to foreign legal systems for the sake of producing a convincing judicial argument has been a custom in judicial decision-making for more than a century. However, a generally accepted theoretical framework for this kind of reasoning is yet to be established. The article suggests that such a framework must answer at least the following three fundamental questions: first, what is the normative relationship, as a matter of principle, between domestic and foreign law?; second, what is the primary motive (...) and functioning of comparative legal reasoning?; and third, what methodological approach enables such reasoning to work in practice? Drawing in particular on linguistic philosophy, as well as recent work on the theory of argumentation, the article outlines a theoretical framework that addresses these questions in order to understand, evaluate and rationalise the use of comparative arguments in legal practice. (shrink)

In this article, through a critical examination of K. Brad Wray's version of the argument from underconsideration against scientific realism, I articulate a modest version of scientific realism. This modest realist position, which I call ‘relative realism’, preserves the scientific realist's optimism about science's ability to get closer to the truth while, at the same time, taking on board the antirealist's premise that theory evaluation is comparative, and thus that there are no good reasons to think that science's (...) best theories are close to the truth. (shrink)

Argument from analogy is a common and formidable form of reasoning in law and in everyday conversation. Although there is substantial literature on the subject, according to a recent survey ( Juthe 2005) there is little fundamental agreement on what form the argument should take, or on how it should be evaluated. Th e lack of conformity, no doubt, stems from the complexity and multiplicity of forms taken by arguments that fall under the umbrella of analogical (...) reasoning in argumentation, dialectical studies, and law. Modeling arguments with argumentation schemes has proven useful in attempts to refine the analyst’s understanding of not only the logical structures that shape the backbone of the argument itself, but also the logical underpinning of strategies for evaluating it, strategies based on the semantic categories of genus and relevance. By clarifying the distinction between argument from example and argument from analogy, it is possible to advance a useful proposal for the treatment of argument from analogy in law. (shrink)

While the existence of horrendous evils has generally been taken to be evidence against the existence of God, some philosophers have suggested that it may be evidence for the existence of God. This paper introduces three main kinds of theistic arguments from horrendous evils: the argument from objectively horrifying evils, the pragmatic argument from evil, and an argument from reasonable responses. For each of these arguments, I will first reconstruct a standard version of (...) the argument, before suggesting ways the argument may be challenged, or further developed. (shrink)

Machine learning-based AI algorithms lack transparency. In this article, I offer an interpretation of AI’s explainability problem and highlight its ethical saliency. I try to make the case for the legal enforcement of a strong explainability requirement: human organizations which decide to automate decision-making should be legally obliged to demonstrate the capacity to explain and justify the algorithmic decisions that have an impact on the wellbeing, rights, and opportunities of those affected by the decisions. This legal duty can be derived (...) from the demands of Rawlsian public reason. In the second part of the paper, I try to show that the argument from the limitations of human cognition fails to get AI off the hook of public reason. Against a growing trend in AI ethics, my main argument is that the analogy between human minds and artificial neural networks fails because it suffers from an atomistic bias which makes it blind to the social and institutional dimension of human reasoning processes. I suggest that developing interpretive AI algorithms is not the only possible answer to the explainability problem; social and institutional answers are also available and in many cases more trustworthy than techno-scientific ones. (shrink)

Rationality (or something similar) is usually given as the relevant difference between all humans and animals; the reason humans do but animals do not deserve moral consideration. But according to the Argument from Marginal Cases not all humans are rational, yet if such (marginal) humans are morally considerable despite lacking rationality it would be arbitrary to deny animals with similar capacities a similar level of moral consideration. The slippery slope objection has it that although marginal humans are (...) not strictly speaking morally considerable, we should give them moral consideration because if we do not we will slide down a slippery slope where we end up by not giving normal humans due consideration. I argue that this objection fails to show that marginal humans have the kind of direct moral status proponents of the slippery slope argument have in mind. (shrink)

In times of populist mistrust towards experts, it is important and the aim of the paper to ascertain the rationality of arguments from expert opinion and to reconstruct their rational foundations as well as to determine their limits. The foundational approach chosen is probabilistic. However, there are at least three correct probabilistic reconstructions of such argumentations: statistical inferences, Bayesian updating, and interpretive arguments. To solve this competition problem, the paper proposes a recourse to the arguments' justification strengths achievable in (...) the respective situation. (shrink)

It has long been known that brain damage has important negative effects on one’s mental life and even eliminates one’s ability to have certain conscious experiences. It thus stands to reason that when all of one’s brain activity ceases upon death, consciousness is no longer possible and so neither is an afterlife. It seems clear that human consciousness is dependent upon functioning brains. This essay reviews some of the overall neurological evidence from brain damage studies and concludes that (...) our argument from brain damage has been vindicated by such overwhelming evidence. It also puts forth a more mature philosophical rationale against an afterlife and counters several replies to the argument. -/- 1. Philosophical Background -- 2. The Dependence of Consciousness on the Brain: Some Preliminary Evidence -- 3. Brain Damage, Lesion Studies, and the Localization of Mental Function - 3.1 Perception - 3.2 Awareness, Comprehension, and Recognition - 3.3 Memory - 3.4 Personality - 3.5 Language - 3.6 Emotion - 3.7 Decision-Making - 3.8 Social Cognition and Theory of Mind - 3.9 Moral Judgment and Empathy - 3.10 Neurological Disorders and Disease - 3.11 The Unity of Consciousness -- 4. Objections and Replies - 4.1 Souls, Minds, and Energy Fields - 4.2 The Instrument Theory - 4.3 The Embodied Soul Alone is Affected -- 5. Conclusion. (shrink)

Almost all evangelical Christians believe that the writing of the Bible was divinely inspired and represents God's main revelation to humanity. They also believe that the Bible contains special features which constitute evidence of its divine inspiration. This would be a use of the Bible to prove God's existence within natural theology rather than within revealed theology, since the book's features are supposed to be evident even to (open-minded) skeptics. Furthermore, since a divinely inspired work must be true, those features (...) are thereby also evidence of the Bible's truth, and thus can be used in support of Christianity as the one true religion. When expressed that way, the reasoning can be construed as an argument both for God's existence and for the truth of the gospel message from the alleged special features of the Bible. We may refer to it as "the Argument from the Bible". Although almost all evangelical Christians agree with it at least to some extent, it is an argument that is for the most part ignored by professional philosophers of religion. One explanation for such neglect is that the argument can be easily refuted. In this essay/outline, I sketch how such a refutation might be formulated. (shrink)

The argument from species overlap has been widely used in the literature on animal ethics and speciesism. However, there has been much confusion regarding what the argument proves and what it does not prove, and regarding the views it challenges. This article intends to clarify these confusions, and to show that the name most often used for this argument (‘the argument from marginal cases’) reflects and reinforces these misunderstandings. The article claims that the (...) class='Hi'>argument questions not only those defences of anthropocentrism that appeal to capacities believed to be typically human, but also those that appeal to special relations between humans. This means the scope of the argument is far wider than has been thought thus far. Finally, the article claims that, even if the argument cannot prove by itself that we should not disregard the interests of nonhuman animals, it provides us with strong reasons to do so, since the argument does prove that no defence of anthropocentrism appealing to non-definitional and testable criteria succeeds. (shrink)

This chapter contains sections titled: The Simple View The Teleological View The Qualitative View Objections Concluding Remarks Works cited.

Cosmological arguments from contingency attempt to show that there is a necessarily existing god‐like being on the basis of the fact that any concrete things exist at all. Such arguments are built out of the following components: (i) a causal principle that applies to non‐necessary entities of a certain category; (ii) a reason to think that if the causal principle is true, then there would have to be a necessarily existing concrete thing; (iii) a reason to think (...) that the necessarily existing thing would be god‐like. In this essay, I discuss various ways of developing each of these components to produce an argument from contingency, and I point out classic objections and replies along the way. I also make note of some of the most recent developments in arguments from contingency and point out avenues for future research. (shrink)