The main currently unsolved problem in the theory of argumentation concerns the function of logic in argumentation and reasoning. The traditional view simply identified logic with the theory of reasoning. This view is still being echoed in older textbooks of formal logic. In a different variant, the same view is even codified in the ordinary usage of words such as ‘logic’, ‘deduction’, ‘inference’, etc. For each actual occurrence of these terms in textbooks of formal (...) logic, there are hundreds of uses of the same idioms to describe the feats of real or fictional detectives. I have called the idea reflected by this usage the “Sherlock Holmes conception of logic and deduction.” In the history of science, we find no less a thinker than Sir Isaac Newton describing his experimental method as one of analysis or resolution and claiming to have “deduced” at least some of his laws from the “phenomena.”. (shrink)

This paper advocates for the normative role of logic in reasoning. I offer a response, anchored in an externalist perspective, to two fronts of attack against the normativity thesis, namely Harman’s sceptical challenge and the accusation of naturalistic fallacy. On the one hand, I rework dialogical bridge principles and show that such principles satisfy adequacy criteria to deal with Harman’s challenge. On the other hand, I argue that it is possible to derive normative consequences from logical facts. (...) This is because argumentative interactions among agents involve the acceptance of constitutive rules that entail obligations. Hence, since logical rules can be seen as constitutive of the social practice of reasoning, they create prescriptions for reasoning. Bridge principles make those obligations and prohibitions explicit. (shrink)

In their work McCulloch and Pitts describe an idea of representing all of nervous activity in terms of propositional logic. This idea was quickly challenged. One of reasons for this challenge was rising believe that logic is unable to describe most of human cognitive processes. In this paper we will analyse premises of original McCulloch and Pitts proposition. Following that, we will ask about ability of symbolic systems to represent human cognition. We will finish by analysing relation between (...) symbolic and subsymbolic computing, in hope of bridging the gap between the two. (shrink)

Intuitively, when all goes well, we adopt beliefs based on inference because we realize that their truth is established by the truth of the involved premises. If this intuitive picture of our successful reasoning is correct, then it must be possible that our reasoning is motivated by our sensitivity to the soundness of the involved inference. This paper argues that such a view of ideal reasoning can only be upheld if we accept the minority view that the (...) proper inferential role of our thoughts is individuated in terms of object dependent Fregean senses. I consider respectively Millian, Guise–Fregean, and object dependent Fregean views, and show how only the latter view provides a picture of our theoretical reasoning where sensitivity to soundness can be what motivates a subject’s reasoning. (shrink)

In the early years of this century, Poincaré and Russell engaged in a debate concerning the nature of mathematical reasoning. Siding with Kant, Poincaré argued that mathematical reasoning is characteristically non-logical in character. Russell urged the contrary view, maintaining that (i) the plausibility originally enjoyed by Kant's view was due primarily to the underdeveloped state of logic in his (i.e., Kant's) time, and that (ii) with the aid of recent developments in logic, it is possible to (...) demonstrate its falsity. This refutation of Kant's views consists in showing that every known theorem of mathematics can be proven by purely logical means from a basic set of axioms. In our view, Russell's alleged refutation of Poincaré's Kantian viewpoint is mistaken. Poincaré's aim (as Kant's before him) was not to deny the possibility of finding a logical ‘proof’ for each theorem. Rather, it was to point out that such purely logical derivations fail to preserve certain of the important and distinctive features of mathematical proof. Against such a view, programs such as Russell's, whose main aim was to demonstrate the existence of a logical counterpart for each mathematical proof, can have but little force. For what is at issue is not whether each mathematical theorem can be fitted with a logical ‘proof’, but rather whether the latter has the epistemic features that a genuine mathematical proof has. (shrink)

My discussion addresses the differences between analytic and continental philosophy concerning the use of logic and exact reasoning in philosophical practice. These differences are mainly examined in the light of the controversial dominance of Hegel's concept of logic (and theory of concept) in twentieth-century continental philosophy. The inquiry is developed in two parts. In the first (Sections 1-2), I indicate some aspects of the analytic-continental divide, pointing to the role that the topic 'logic and philosophy' (...) plays in it. In the second part (Sections 3-6), I give a short account of the views of logic which are typical of the three main trends of continental philosophy (see Table 1). I also suggest how, with the aid of some typical analytical devices, some continental 'anti-logical' attitudes may be corrected, on their own terms. (shrink)

The Fifth International Congress of Logic, Methodology and Philosophy of Science was held at the University of Western Ontario, London, Canada, 27 August to 2 September 1975. The Congress was held under the auspices of the International Union of History and Philosophy of Science, Division of Logic, Methodology and Philosophy of Science, and was sponsored by the National Research Council of Canada and the University of Western Ontario. As those associated closely with the work of the Division over (...) the years know well, the work undertaken by its members varies greatly and spans a number of fields not always obviously related. In addition, the volume of work done by first rate scholars and scientists in the various fields of the Division has risen enormously. For these and related reasons it seemed to the editors chosen by the Divisional officers that the usual format of publishing the proceedings of the Congress be abandoned in favour of a somewhat more flexible, and hopefully acceptable, method of pre sentation. Accordingly, the work of the invited participants to the Congress has been divided into four volumes appearing in the University of Western Ontario Series in Philosophy of Science. The volumes are entitled, Logic, Foundations of Mathematics and Computability Theory, Foun dational Problems in the Special Sciences, Basic Problems in Methodol ogy and Linguistics, and Historical and Philosophical Dimensions of Logic, Methodology and Philosophy of Science. (shrink)

My discussion addresses the differences between analytic and continental philosophy concerning the use of logic and exact reasoning in philosophical practice. These differences are mainly examined in the light of the controversial dominance of Hegel's concept of logic in twentieth-century continental philosophy. The inquiry is developed in two parts. In the first, I indicate some aspects of the analytic -continental divide, pointing to the role that the topic 'logic and philosophy' plays in it. In the (...) second part, I give a short account of the views of logic which are typical of the three main trends of continental philosophy. I also suggest how, with the aid of some typical analytical devices, some continental 'anti-logical' attitudes may be corrected, on their own terms. (shrink)

Prior research shows that reasoners' confidence is poorly calibrated (Shynkaruk & Thompson, 2006). The goal of the current experiment was to increase calibration in syllogistic reasoning by training reasoners on (a) the concept of logical necessity and (b) the idea that more than one representation of the premises may be possible. Training improved accuracy and was also effective in remedying some systematic misunderstandings about the task: those in the training condition were better at estimating their overall performance than those (...) who were untrained. However, training was less successful in helping reasoners to discriminate which items are most likely to cause them difficulties. In addition we explored other variables that may affect confidence and accuracy, such as the number of models required to represent the problem and whether or not the presented conclusion was necessitated by the premises, possible given the premises, or impossible given the premises. These variables had systematically different relationships to confidence and accuracy. Thus, we propose that confidence in reasoning judgements is analogous to confidence in memory retrievals, in that they are inferentially derived from cues that are not diagnostic in terms of accuracy. (shrink)

What role, if any, should emotions play in clinical reasoning and decision making? Traditionally, emotions have been excluded from clinical reasoning and decision making, but with recent advances in cognitive neuropsychology they are now considered an important component of them. Today, cognition is thought to be a set of complex processes relying on multiple types of intelligences. The role of mathematical logic or verbal linguistic intelligence in cognition, for example, is well documented and accepted; however, (...) the role of emotional intelligence has received less attention—especially because its nature and function are not well understood. In this paper, I argue for the inclusion of emotions in clinical reasoning and decision making. To that end, developments in contemporary cognitive neuropsychology are initially examined and analyzed, followed by a review of the medical literature discussing the role of emotions in clinical practice. Next, a published clinical case is reconstructed and used to illustrate the recognition and regulation of emotions played during a series of clinical consultations, which resulted in a positive medical outcome. The paper’s main thesis is that emotions, particularly in terms of emotional intelligence as a practical form of intelligence, afford clinical practitioners a robust cognitive resource for providing quality medical care. (shrink)

Ancient Chinese logicians presupposed no fixed order in the world. Things are changing all the time. Time, then, plays a crucial role in the structure of Chinese logic. This article uses the concept of "subjective time" and the Leibnizian concept of "possible worlds" to analyze the structure of logic in the Later Mohist Canon and in the logical reasoning of other early Chinese philosophers. The author argues that Chinese logic is structured in the time of (...) the now. This time is subjective and "spreads out" to more than one possible world. Chinese logicians had to deal with relationships in not only a single world but also more than one "possible world." The aim of Chinese logical reasoning is not to represent any universal truth but to point out (zhi ) a particular-world-related truth, or, in other words, the harmony of relations among particulars in a particular field at a single moment. Therefore, a valid Chinese logical argument represents only the beauty of harmony among possible worlds at a given moment. The harmony represented by Chinese logic brings to light a high level of aesthetic order in a world that is always changing. (shrink)

This essay on the social history of logic instruction considers the programmatic writings of Carnap/Neurath, but especially in the widely read book by Lillian Lieber, Mits, Wits and Logic, where Mits is the man in the street and Wits the woman in the street. In the ‘pre-Toulmin’ days it was seriously argued that the intense study of formal logic would create a more rational frame of mind and have many beneficial effects upon the social and political life. (...) It arose from the conviction that most metaphysical conundrums, religious and political problems and even fanaticism had their root in the irrationality of ordinary discourse, which had to be replaced by the more logical ‘ideal language’ of Principia Mathematica. The enthusiastic promotion of formal logic occurred at a time when it was widely thought that minds could be ‘made over’, ‘reprogrammed’ by proper intervention. This stands in stark contrast to the motivation for teaching informal logic and critical thinking, as it becomes apparent in a 1981 exchange between Ralph Johnson and Gerald Massey in Teaching Philosophy. Most of this essay focuses on Lillian Lieber, an earnest and enthusiastic advocate of the cause of formal logic, and on the reasons for the widespread conviction that, for the sake of peace and social harmony, formal logic should, if possible, be taught to every man, woman and child. (shrink)

This paper offers a short and biased overview of the history of discussion and controversy about the role of different forms of representation in intelligent agents. It repeats and extends some of the criticisms of the `logicist' approach to AI that I first made in 1971, while also defending logic for its power and generality. It identifies some common confusions regarding the role of visual or diagrammatic reasoning including confusions based on the fact that different forms (...) of representation may be used at different levels in an implementation hierarchy. This is contrasted with the way in the use of one form of representation (e.g. pictures) can be {\em controlled} using another (e.g. logic, or programs). Finally some questions are asked about the role of metrical information in biological visual systems. (shrink)

This paper explores the relationship between informal reasoning, creativity in mathematics, and problem solving. It underscores the importance of environments that promote interaction, hypothesis generation, examination, refutation, derivation of new solutions, drawing conclusions, and reasoning with others, as key factors in enhancing mathematical creativity. Drawing on argumentation logic, the paper proposes a novel approach to uncover specific characteristics in the development of formalized proving using “proof-events.” Argumentation logic can offer reasoning mechanisms that facilitate these environments. (...) This paper proposes how argumentation can be implemented to discover certain characteristics in the development of formalized proving with “proof-events”. The concept of a proof-event was introduced by Goguen who described mathematical proof as a multi-agent social event involving not only “classical” formal proofs, but also other informal proving actions such as deficient or alleged proofs. Argumentation is an integral component of the discovery process for a mathematical proof since a proof necessitates a dialogue between provers and interpreters to clarify and resolve gaps or assumptions. By formalizing proof-events through argumentation, this paper demonstrates how informal reasoning and conflicts arising during the proving process can be effectively simulated. The paper presents an extended version of the proof-events calculus, rooted in argumentation theories, and highlights the intricate relationships among proof, human reasoning, cognitive processes, creativity, and mathematical arguments. (shrink)

I begin by summarizing the first two chapters of (Harman 1986). The first chapter stresses the importance of not confusing inference with implication and of not confusing reasoning with the sort of argument studied in deductive logic. Inference and reasoning are psychological events or processes that can be done more or less well. The sort of implication and argument studied in deductive logic have to do with relations among propositions and with structures of propositions distinguished into (...) premises, intermediate steps, and conclusion. Deductive logic is not a particular psychological subject and is not a particularly normative subject, although one might attempt to develop a logic of belief or a deontic logic, for example. (shrink)

In making assertions one takes on commitments to the consistency of what one asserts and to the logical consequences of what one asserts. Although there is no quick link between belief and assertion, the dialectical requirements on assertion feed back into normative constraints on those beliefs that constitute one's evidence. But if we are not certain of many of our beliefs and that uncertainty is modelled in terms of probabilities, then there is at least prima facie incoherence between the normative (...) constraints on belief and the probability-like structure of degrees of belief. I suggest that the norm-governed practice relating to degrees of belief is the evaluation of betting odds. (shrink)

Matching bias in conditional reasoning consists of a tendency to select as relevant cases whose lexical content matches that referred to in the conditional statement, regardless of the presence of negatives. Evans demonstrated that use of explicit rather than implicit negative cases markedly reduced the matching bias effect on the conditional truth table task. In apparent contrast, recent studies of explicit negation on the Wason selection task have failed to find evidence of logical facilitation. Experiment 1 of the present (...) study strongly replicated the Evans findings and extended them to three forms of conditional statement. Experiments 2 and 3 showed further that the use of explicit negatives removed completely the matching bias effect on the Wason selection task. However, consistent with other recent studies, this elimination of bias didnotlead to facilitation of correct responding. The findings are interpreted as providing evidence that matching bias reflects a linguistically cued relevance effect. (shrink)

This book presents the current state of the art regarding the application of logical tools to the problems of theory and practice of lawmaking. It shows how contemporary logic may be useful in the analysis of legislation, legislative drafting and legal reasoning concerning different contexts of lawmaking. Elaborations of the process of lawmaking have variously emphasised its political, social or economic aspects. Yet despite strong interest in logical analyses of law, questions remains about the role of logical (...) tools in lawmaking. This volume attempts to bridge that gap, or at least to narrow it, drawing together some important research problems-and some possible solutions-as seen through the work of leading contemporary academics. The volume encompasses 20 chapters written by authors from 16 countries and it presents diversified views on the understanding of logic (from strict mathematical approaches to the informal, argumentative ones) and differentiated choices concerning the aspects of lawmaking taken into account. The book presents a broad set of perspectives, insights and results into the emerging field of research devoted to the logical analysis of the area of creation of law. How does logic inform lawmaking? Are legal systems consistent and complete? How can legal rules be represented by means of formal calculi and visualization techniques? Does the structure of statutes or of legal systems resemble the structure of deductive systems? What are the logical relations between the basic concepts of jurisprudence that constitute the system of law? How are theories of legal interpretation relevant to the process of legislation? How might the statutory text be analysed by means of contemporary computer programs? These and other questions, ranging from the theoretical to the immediately practical, are addressed in this definitive collection. (shrink)

I offer you some theories of intellectual obligations and rights (virtue Ethics): initially, RBT (a Right to Believe Truth, if something is true it follows one has a right to believe it), and, NDSM (one has no right to believe a contradiction, i.e., No right to commit Doxastic Self-Mutilation). Evidence for both below. Anthropology, Psychology, computer software, Sociology, and the neurosciences prove things about human beliefs, and History, Economics, and comparative law can provide evidence of value about theories of rights. (...) However, insofar as we have methods within Philosophy to help us formulate precise concepts of 'belief' and 'rights', methods that also help us to prove links (or absence thereof) amongst families of concepts of rights and belief, our discipline is in and of itself capable of sound reasoning about issues as puzzling as the following. Suppose a Jane who does not believe in God yet who believes she ought to so believe: Jane is undergoing doxastic moral regret (moral regret for lack of faith). We have all known such Janes and perhaps at one time or another even been one. Paradox: given RBT and NDSM, Jane as described not only does not exist, Jane cannot exist. Thus, to enrich the ways in which Philosophy need not get all its evidence from other academic disciplines, I present a brief introduction to what I call Neutral Universal Frames (NUFs). NUFs solve hard puzzles about interactions among modal concepts of belief and rights, concepts that occur in RBT, NDSM and the description of our Janes. NUFs for theories precisely articulated via any two or more modal concepts are a powerful and immensely general set of tools enabling us to define rich theories of truth ("models on frames") to test philosophical theories for internal consistency and to prove the existence of connections (or absence thereof) amongst alternative articulations of philosophical theories. NUFs thereby add to the constructive knowledge producing way Logics intersect with Philosophy of Religion. And we will soon see why Jane, be she named 'Jane' or known simply as you: cannot exist. Read on at your own risk. (shrink)

Meta-moral cognitive skills consist of identifying reasons behind ethical decisions, potential criticisms for such reasons, and constructing counterarguments for these criticisms. We assessed the relationship among these three elements of ethical judgment justification using ethical dilemmas. A mixed-methods research design was used to investigate university students from India and Japan. Critical thinking skills, knowledge of professional ethics, discipline, perspective-taking, common sense, and culture influenced the respondents’ meta-moral cognitive skills. There was a correlation between the number/strength of reasons and criticisms and (...) between criticisms and counterarguments. The respondents had difficulty connecting the reasons for their decisions and their counterarguments. The results imply that incorporating personal and professional cases as part of the ethics curriculum can improve meta-moral cognitive skills. (shrink)

The seminal book on graph theory by Dénes Kőnig, published in the year 1936, collected notions and results from precursory works from the mid to late nineteenth century by Hamilton, Cayley, Sylvester and others. More importantly, Kőnig himself contributed many of his own results that he had obtained in the more than twenty years that he had been working on this subject matter. What is noteworthy is the fact that the fundamentals of what he calls directed graphs are taken almost (...) exhaustively from Paul Hertz' 1922 article on structural reasoning about sentences of the form a→b. This is not a fact that is well known in logical circles, even though Kőnig fully acknowledges this in his book. In view of the numerous trends in the recent decades to describe and explicate logical matters by means of graphs, the fact that it was Hertz' foundation of structural reasoning that informed basic notions of graph theory in the first place is highly significant. The main goal of this paper is to summarize Hertz' article and demonstrate how Kőnig integrates the notions and results presented therein in his book. This is followed by an exposition of how and when Hertz' results were reinvented in terms of graph theory. A critical discussion of the opinion expressed by both Hertz and Kőnig that the more general sentences of the form (a1,…,an)→b, introduced by Hertz in a companion article in 1923, cannot be interpreted by graphs concludes this paper. (shrink)

In this paper we consider the relation between beliefs and goals in agent theory. Beliefs play three roles in reasoning about goals: they play a role in the generation of unconditional desires from conditional ones, they play a role in adoption of desires as goals, and they play a role in the selection of plans to achieve goals. In this paper we consider the role of goals in reasoning about beliefs. Though we assume that (...) goals do not play a role in the belief generation problem, we argue that they play a role in the belief selection problem. We show the rationality of the use of goals in belief selection, in the sense that there are cases in which agents that take their goals into account in selecting a belief set from a set of alternatives outperform agents that do not do so. We also formally distinguish between the rational role of goals in belief selection and irrational wishful thinking. (shrink)

In the present manuscript, we comment upon a paper that strongly criticized an expert report written by the consultants of the defense in a case of pedophilia, in which clinical and neuro-scientific data were used to establish the causal link between brain alterations and onset of criminal behavior. These critiques appear to be based mainly on wrong pieces of information and on a misinterpretation of the logical reasoning adopted by defense consultants. Here we provide a point-by-point reply to the (...) issues raised in the above paper and also discuss the potential role that neuroscience may contribute in the forensic context. Did the forensic neuroscience defense consultants claim the existence of a deterministic relationship between brain structure or function and behavior? How did the neuroscientific logic work in this specific case? How may the classic psychiatric/neurologic examination and neuroscientific evidence work side by side? Does the rarity of a disease impact on the causal relationship between the disease and the crime? Do neuroscientific data need to be interpreted? We address the above questions and conclude that neuroscience may strengthen the results of psychiatric evaluations, thus reducing uncertainty in the forensic settings. (shrink)

This article shows how important Aristotle’s thought has been in the development of Schelling’s last attempts in order to build a complete system for the solution of the problem of the existent. In particular, the last philosophy of the author of Leonberg is centered on the relationship between negative or purely rational philosophy, and positive philosophy, which Schelling used to call philosophical Empiricism. The former—the main representative of which was Hegel—gains exclusively the empty logical concept of the existent; the latter (...) realizes that only experience can give us the actual existence. But they are both indispensable: positive philosophy gives the content, negative philosophy fixes the container: they are necessary to one another. Aristotle did not elaborate a complete positive philosophy, but he was the first one who recognized the prominence of the fact of existence on its mere concept. So that, in the end, he embodied the necessary step that the reason must make beyond itself, in order to get the real existence: this philosophical and not at all mystical step is what Schelling called ecstasy. (shrink)

Emotion is usually conceived as playing a relatively external role in education: either it is raw material reshaped by rational practices, or it merely motivates intellectual reasoning. Drawing upon the philosophy of Hegel and Plato’s Socrates, I argue, however, that education is a process of existential transformation and that emotion plays an essential, internal role therein. Through an analysis of Hegel’s master and slave dialectic, I argue that emotions have their own logic and that an individual (...) can be propelled to increasingly rational emotional stances by the demands of the emotional situationitself, even in the absence of any intellectual reasoning or rational training. Appealing also to the structure and content of Socrates’ conversations, I argue that intellectual reasoning can lead to self-overcoming only insofar as it involves a particular emotional orientation towards the emotional challenges of genuine learning, that is, insofar as it is “conscientious reasoning.”. (shrink)

This book investigates the central role of reason in Islamic intellectual life. Despite widespread characterization of Islam as a system of belief based only on revelation, John Walbridge argues that rational methods, not fundamentalism, have characterized Islamic law, philosophy and education since the medieval period. His research demonstrates that this medieval Islamic rational tradition was opposed by both modernists and fundamentalists, resulting in a general collapse of traditional Islamic intellectual life and its replacement by more modern but far shallower (...) forms of thought. However, the resources of this Islamic scholarly tradition remain an integral part of the Islamic intellectual tradition and will prove vital to its revival. The future of Islam, Walbridge argues, will be marked by a return to rationalism"--Provided by publisher. (shrink)

ABSTRACT My aim in this paper is to present a pluralist thesis about the inferential role of logical constants, which embraces classical, relevant, linear and ordered logic. That is, I defend that a logical constant c has more than one correct inferential role. The thesis depends on a particular interpretation of substructural logics' vocabulary, according to which classical logic captures the literal meaning of logical constants and substructural logics encode a pragmatically enriched sense of those connectives. (...) The paper is divided into four parts: first, I introduce the motivation for the pluralist thesis of the paper; second I introduce the calculus for the different logics endorsed in the pluralist thesis; third, I motivate how the different behaviors of the logical vocabulary of these logics can be pragmatically interpreted, and fourth, I motivate how the different inferential roles that each substructural logic attribute to logical constants can coexist, and how we should reason with a logical constant c given this plurality. (shrink)

: C.S. Peirce defines mathematics in two ways: first as "the science which draws necessary conclusions," and second as "the study of what is true of hypothetical states of things" (CP 4.227–244). Given the dual definition, Peirce notes, a question arises: Should we exclude the work of poietic hypothesis-making from the domain of pure mathematical reasoning? (CP 4.238). This paper examines Peirce's answer to the question. Some commentators hold that for Peirce the framing of mathematical hypotheses requires poietic genius (...) but is not scientific work. I propose, to the contrary, that although Peirce occasionally seems to exclude the poietic creation of hypotheses altogether from pure mathematical reasoning, Peirce's position is rather that the creation of mathematical hypotheses is poietic, but it is not merely poietic, and accordingly, that hypothesis-framing is part of mathematical reasoning that involves an element of poiesis but is not merely poietic either. Scientific considerations also inhere in the process of hypothesis-making, without excluding the poietic element. In the end, I propose that hypothesis-making in mathematics stands between artistic and scientific poietic creativity with respect to imaginative freedom from logical and actual constraints upon reasoning. (shrink)

The text concerns the role of emotions in delusion formation. Provided are definitions from DSM-V and DSM-IV-R and the problems found in those definitions. One of them, the problem of delusion formation, is described when providing cognitive theories of delusions. The core of the paper is a presentation of the emotional and affective disorders in delusions, especially Capgras delusion and Cotard delusion. The author provides a comparison of the kinds of delusions and the conclusions taken from neuroimaging studies. As (...) a result of the fact that an explanation of delusion formation focusing on emotional problems turns out to be insufficient, the author provides examples of the reasoning impairments which coexist with them. At the end of the article, some hypotheses are proposed concerning the role of emotions and reasoning in delusion formation and the relation between belief disorders and emotional disorders. (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)

Most modern moral philosophy is what I call ‘Impersonalist.’ It claims, quite plausibly, that the particular identity of the moral agent has nothing to do with the rightness or bestness of a given course of action, with the overriding moral reasons supporting such an action, nor with the moral obligation placed upon the agent to perform it.In addition, the Impersonalist account assumes what I call a Humean model of practical reasoning, whereby perception, deliberation, decision, and action are all logically (...) separate stages.I challenge both the alleged moral irrelevance of the agent and the logical separation of the reasoning stages by invoking Peter Winch’s metaphor of a ‘moral perspective’: my perception andmy deliberation are both shaped by the perspective from within which I experience – and must experience – the world.Different people have different moral perspectives, and so they will consider different moral options as available and different reasons as relevant when considering the same situation. This is relativism, but only a benign form, and I explain why. (shrink)

Moral education is a core component of ideological and political courses in primary and secondary schools and universities in China, and also an important part of contemporary Chinese Marxist educational theory and practice. In Chinese senior high schools, the main curriculum and platform for moral education is ideological and political courses. The Ideological and Political Curriculum Standards for General Senior High Schools (2017 Edition, 2020 Revised) issued by the Ministry of Education of the People’s Republic of China explicitly includes a (...) course on logical thinking in the ideological and political curriculum in general senior high schools, strengthening the importance of logic in moral education there. In this paper, the authors explain the necessity of intensifying logic training for contemporary Chinese teenagers, introduce and interpret the relevant contents in the Ideological and Political Curriculum Standards for General Senior High Schools (2017 Edition, 2020 Revised), and put forward some theoretical suggestions on how to conduct teaching on the subject of logic. (shrink)

In this work, we propose a meaningful extension of description logics for non-monotonic reasoning. We introduce \, a logic allowing for the representation of and reasoning about both typical class-membership and typical instances of a relation. We propose a preferential semantics for \ in terms of partially-ordered DL interpretations which intuitively captures the notions of typicality we are interested in. We define a tableau-based algorithm for checking \ knowledge-base consistency that always terminates and we show that it (...) is sound and complete w.r.t. our preferential semantics. The general framework we here propose can serve as the foundation for further exploration of non-monotonic reasoning in description logics and similarly structured logics. (shrink)

Lance Rips describes a unified theory of natural deductive reasoning and fashions a working model of deduction, with strong experimental support, that is capable of playing a central role in mental life.

In lieu of an abstract, here is a brief excerpt of the content:347 THE ROLE OF PART XII IN HUME'S DIALOGUES CONCERNING NATURAL RELIGION Anyone appreciative of Hume's greatness as a philosopher will want to suppose that the Dialogues both form a coherent whole and express Hume's own views on natural religion or religion based on reason (as opposed to religion based on revelation). In the last connection, given what we know of Hume's epistemology, life, and correspondence, one would (...) be inclined to suppose that he would reject out of hand the claims of revealed religion and contend that if there existed an acceptable religion it would have to be some form of natural religion. But insofar as natural religion claimed to establish scientifically the existence and nature of God one would envisage Hume dissenting. Now as long as we restrict our gaze to Parts I-XI of the Dialogues we seem to be able, easily enough, to satisfy all these suppositions. In Part IV, under the name of 'mysticism, ' revealed religion is summarily and facetiously dismissed as 2 indistinguishable from atheism. Demea's apparently permanent departure from the discussion at the conclusion of Part XI as much as says, symbolically, that revealed religion is not a serious contender for one's belief. Its a priori arguments -- the argument from sufficient reason and the ontological argument -- are almost as shortly attacked and dismissed (D 188-192). Also quite in keeping with Hume's philosophical view on knowledge of matters of fact is, on the other hand, the lengthy and detailed examination he bestows on the empiricist argument from design. That Philo, ostensibly his spokesman, is however able to uncover all kinds of logical short-comings in its claims to scientifically 348 establish the existence and nature of God does not surprise us; it coheres perfectly with our preconceived picture of Hume the skeptic, and his system as restricting science to numbers and quantities or, in the term's looser sense, to human nature and its more immediate surroundings. In short, Parts I-XI seem to be all of one Humean whole. But at first and even second glance Part XII notoriously seems to tear our hopes to find coherence and a plausible representation of Hume to tatters. There are, for one thing, those mocking sentences that seem to paint Hume in the colors of a devout, believing Christian, 'avid' for revelation. Thus, at the end of Part XII, apparently expressing Hume's deepest convictions, Philo says that "a person, seasoned with a just sense of the imperfections of natural reason, will fly to revealed truth with the greatest avidity" and immediately afterwards, "To be a philosophical sceptic is, in a man of letters, the first and most essential step towards being a sound, believing Christian" (D 227, 228). For another thing, in Part XII Hume seems to be completely reversing his refutations in Parts I-XI of the argument from design's claims to establish the existence and nature of God. Thus, where in Part II he had Philo reject the use of causal reasoning in the establishment of a Mind as the first cause of the universe on the relevantly Humean grounds that, to do so, "it were requisite, that we had experience of the origin of worlds" (D 150), in Part XII he has Philo, apparently speaking for himself (Hume), argue that "as there are also considerable differences, we have reason to suppose a proportional difference in the causes; and in particular ought to attribute a much higher degree of power and energy to the supreme cause than any we have ever observed in mankind. 349 Here then the existence of a DEITY is plainly ascertained by reason" (D 217). Indeed, all forms of the argument of design, purely analogical as well as causal, seem resurrected in Part XII, although they were one and all hanged and buried in Parts I-XI. Moreover, it seems that in Part XII Hume via Philo is saying that science itself leads us "to acknowledge a first intelligent Author" (D 214-215). Before proceeding to deal with certain other incoherencies with which Part XII seems to confront us let us address ourselves to the two that I have so far... (shrink)

Most of the most prominent discussions within metaphysics assume without argument that our metaphysical theorizing should be constrained by classical logic. I examine why this is the case and then argue that it should not be. That is, I argue that we should not take our metaphysical theorizing to be constrained by classical logic.

What is the proper role of logic in analytic theology? This question is thrown into sharp relief when a basic logical principle is questioned, as in Beall’s ‘Christ – A Contradiction.’ Analytic philosophers of logic have debated between exceptionalism and anti-exceptionalism, with the tide shifting towards anti-exceptionalism in recent years. By contrast, analytic theologians have largely been exceptionalists. The aim of this paper is to argue for an anti-exceptionalist view, specifically treating logic as a modelling tool. (...) Along the way I critically engage with Beall on the role of logic in theology, maintaining that theological inquiry is in some ways disanalogous with other theoretical enterprises. (shrink)

I interpret Mill?s view on logic as the instrumentalist view that logical inferences, complex statements, and logical operators are not necessary for reasoning itself, but are useful only for our remembering and communicating the results of the reasoning. To defend this view, I first show that we can transform all the complex statements in the language of classical first-order logic into what I call material inference rules and reduce logical inferences to inferences which involve only atomic (...) statements and the material inference rules. Then I explain why we introduce logical operators and logical inference rules into a system of the latter kind. In the end I determine what kind of negation is justified from this point of view. (shrink)

Numerous researchers have examined the antecedents of trust between managers and subordinates. Recent studies conclude that their influence varies depending on whether what is being examined is a manager's trust in a subordinate or a subordinate's trust in a manager. However, the reasons given to justify this phenomenon present limitations. This article offers a new theoretical approach that relates the influence of each antecedent to Aristotelian forms of reasoning, ethical, and instrumental. The proposed approach shows that the influence of (...) each antecedent depends on which rationality prevails in the person who trusts. The contribution of this article is to better explain the phenomenon of interpersonal trust formation and its logic, while offering at the same time several practical implications for managers interested in developing an organizational culture based on trust. The article begins with a literature review of more relevant empirical studies analyzing superior–subordinate trust formation and presents some theoretical limitations of the arguments described in these works. Then, it offers a new theorerical approach based on Aristotelian thought to explain the influence of the antecedents of trust in management–subordinate relationships. The theoretical contribution is then confirmed in an empirical study of 163 mid-level managers in Spain. (shrink)

The similarity approach stands as a significant attempt to defend scientific realism from the attack of the pessimistic meta-induction. The strategy behind the similarity approach is to shift from an absolute notion of truth to the more flexible one of truthlikeness. Nonetheless, some authors are not satisfied with this attempt to defend realism and find that the notion of truthlikeness is not fully convincing. The aim of this paper is to analyze and understand the reasons of this dissatisfaction. Our thesis (...) is that the dissatisfaction with the notion of truthlikeness concerns the double role that this notion plays within the similarity approach: This notion plays both a regulative role in the conception of theories and a constitutive one in their selection. (shrink)

The abductive stage of logical investigation benefits from direct contact with objects of thought, especially material objects in aggregates. The ubiquity of collecting activity and collections of non-utilitarian material objects in ancient as well as contemporary settings, with increasingly deliberate attention to material objects as implements of thought, demonstrates these benefits. This essay focuses on the logica utens of collecting and the role of collections in detection and discovery.

The aim of the present paper is to evaluate the role of a patient’s religious and non-religious beliefs in making decisions about medical care. Faith exerts a profound influence on our spiritual lives and on our daily actions, including ethical decisions. Religion determines the believer’s fundamental worldview, view of humanity, perspective on life and death, and values. In this paper, we investigated the treatment of medical decisions based on religious or non-religious beliefs. To understand this issue, it is necessary (...) to assess the uniqueness and validity of religious beliefs, as well as the rationality of beliefs. We concluded that decisions based on religious and non-religious beliefs shouldbe treated in the same way and that the distinguishing features of valid beliefs are deeply held and do not cause harm to others. In addition, we stated that the root beliefs we hold, whether religious or secular, cannot necessarily be explained logically, and that patient decisions should be judged by the logical consistency of their reasoning with their beliefs as starting points. (shrink)