This volume contains papers presented at the Poznań Reasoning Week multi-conference held in Poznań in September 11-15, 2018. PRW aims at bringing together experts whose research offers a broad range of perspectives on systematic analyses of reasoning processes and their formal modelling. The 2018 edition consisted of three conferences, which addressed the following topics: (i) games in reasoning research, (ii) the interplay of logic and cognition, and (iii) refutation systems. The papers collected in this volume address all these topics.

The sequent system LDJ is formulated using the same connectives as Gentzen's intuitionistic sequent system LJ, but is dual in the following sense: (i) whereas LJ is singular in the consequent, LDJ is singular in the antecedent; (ii) whereas LJ has the same sentential counter-theorems as classical LK but not the same theorems, LDJ has the same sentential theorems as LK but not the same counter-theorems. In particular, LDJ does not reject all contradictions and is accordingly paraconsistent. To obtain a (...) more precise mapping, both LJ and LDJ are extended by adding a "pseudo-difference" operator which is the dual of intuitionistic implication. Cut-elimination and decidability are proved for the extended systems and , and a simply consistent but -inconsistent Set Theory with Unrestricted Comprehension Schema based on LDJ is sketched. (shrink)

The paper offers a theoretical investigation into the sources of normativity in practical argumentation. The chief question is: Do we need objectively-minded, unbiased arguers or can we count on “good” argumentative processes in which individual biases cancel each other out? I address this question by analysing a detailed structure of practical argument and its varieties, and by discussing the tenets of a comparative approach to practical reason. I argue that given the comparative structure proposed, reasoned advocacy in argumentative activity upholds (...) reasonableness whenever that activity is adequately designed. I propose some basic rules for such a design of practical argumentation. (shrink)

This article addresses the question whether skiing as a nature sport enables practitioners to develop a rapport with nature, or rather estranges and insulates them from their mountainous ambiance. To address this question, I analyse a recent skiing movie from a psychoanalytical perspective and from a neuro-scientific perspective. I conclude that Jean-Paul Sartre’s classical but egocentric account of his skiing experiences disavows the technicity involved in contemporary skiing as a sportive practice for the affluent masses, which actually represents an urbanisation (...) of the sublime, symptomatic for the current era. (shrink)

A survey of the main approaches in a mind study -oriented part of Artificial Intelligence is made focusing on controversial issues and extreme hypotheses. Various meanings of terms: "intelligence" and "artificial intelligence" are discussed. Limitations for constructing intelligent systems resulting from the lack of formalized models of cognitive activity are shown. The approaches surveyed are then recapitulated in the light of these limitations.

Since its first introduction by Hans Reichenbach, many philosophers have claimed to refute the common cause principle. The situation is not so straightforward, though: validity of the principle remains an open question. The book traces different formulations of the principle, and provides proofs of a few pertinent theorems, settling the relevant questions in various probability spaces. It offers both philosophical insight and mathematical rigor.

Awareness of mortality is one of the key aspects of human existence. Death goes beyond the boundary of knowledge, mortality. However, it is actually experienced by man as something inevitable. Death is a fact – the end of life, and the experience of mortality is one of the borderline situations. In the essay, the author puts forward the thesis that the experience of mortality has a significant impact on the human understanding of values. Attitudes towards death be it fear, resignation, (...) indifference, fascination, mourning, sadness, despair after the loss of a loved one, or the desire for death, indicate the wealth of the world of value of axiological experience. The attitude of the person towards death, in some sense, is a test of our humanity, the principal value to which we refer most often. The author of the essay adopts the position of axiological relationalism, it implies that values are independent of the subject, they form a network of relational connections, but they are in a significant way connected with culture. The study of these connections: 1) with the world of people, 2) world of things, 3) internal relations that take place between values, allows us to get to know the complex structure of the world of values. In the article, the author analyzes in what sense mortality influences human understanding of values. (shrink)

This book gives the first complete, fully historicized account of Emerson's metaphysics of cause and effect and its foundational position in his philosophy as a whole. Joseph Urbas proposes an intellectual biography of Emerson the metaphysician but also the life-story of a concept synonymous, in the Transcendentalist period, with life itself—the story of the principle at the origin of all being and change.

Poetry comes as close as language can to capturing that out-of-body lightness of swishing through the trees, of jumping off a cornice, of floating through the bottomless powder. This book is about joy and loss. It is about danger and consciousness. It is provocative, full of wit and insight, and helps us meet the challenges of self-discovery. Peak experiences give us a glimpse of a world beyond what our senses report. It is a world we can feel but not articulate; (...) know but not describe. In the poet's words, the sight is within us-speak and it is gone. The bliss of memory persuades us it is real. (shrink)

Approximately one in six top economic research papers draws an explicitly causal conclusion. But what do economists mean when they conclude that A 'causes' B? Does 'cause' say that we can influence B by intervening on A, or is it only a label for the correlation of variables? Do quantitative analyses of observational data followed by such causal inferences constitute sufficient grounds for guiding economic policymaking? The Philosophy of Causality in Economics addresses these questions by analyzing the meaning of causal (...) claims made by economists and the philosophical presuppositions underlying the research methods used. The book considers five key causal approaches: the regularity approach, probabilistic theories, counterfactual theories, mechanisms, and interventions and manipulability. Each chapter opens with a summary of literature on the relevant approach and discusses its reception amongst economists. The text details case studies, and goes on to examine papers which have adopted the approach in order to highlight the methods of causal inference used in contemporary economics. It analyses the meaning of the causal claim put forward, and finally reconstructs the philosophical presuppositions accepted implicitly by economists. The strengths and limitations of each method of causal inference are also considered in the context of using the results as evidence for policymaking. This book is essential reading to those interested in literature on the philosophy of economics, as well as the philosophy of causality and economic methodology in general. (shrink)

The wound inflicted by the clerical sexual abuse scandal and its cover-up runs so deep that it is sometimes deemed impossible to talk about the church at the beginning of the twenty-first century in a credible way without making at least some reference to this problem. This opinion is seemingly partially shared by current and previous pontiffs, who, on many occasions and in various contexts, have touched upon this issue. In the many interventions in which Benedict XVI and Francis have (...) raised this sad topic, they have apologised on behalf of the leaders of the church for the cases of abuse and for the following cover-up. They have offered words of regret and consolation to victims, their families, the entire church and the world, and have promised to do everything possible to prevent it from happening again. Further, they have attempted to identify the causes of the problem to understand how it could have taken place and the actions required to prevent this tragedy from recurring. Their analyses bear signs of similarities and dissimilarities. The purpose of this article is to ask what the church in Australia, and the church in general, can learn from the two popes' approaches to this problem, not only with regard to handling possible future cases of abuse, but also with regard to the general ways of existing as a church in the twenty-first century. Behind Francis's and Benedict's conclusions lie their own theologies of the church, which are worth exploring since they contain important lessons and signposts for the church at the beginning of the third millennium. (shrink)

Peter Singer is one of the most famous bioethicists in the world. His controversial opinions disseminated in his countless publications and his undoubtedly good erudition made him very popular. Using logical arguments he always tries to prove that only a conscious being, a person, has the right to live. No wonder that his opponents call him "the famous death messenger". Australian philosopher is an ethic relativist in the way that he resigns from objective values in his conception. Moreover, he doesn't (...) approve unchangeable moral principles. According to him such moral values as 'good' and 'bad' are relative, depending on consequences which decide what is right in particular situation. He is polemical to traditional ethic adherents who value every human life. There is no objective life category in his conception. Life can be only considered according to its quality and, therefore, only beings possessing feelings and consciousness are subjects of morality. They only have the right to live. (shrink)

L'idea di scrivere questo libro sul diritto naturale e nata dal desiderio dell'autore di approfondire il problema della fondazione della norma morale, nella convinzione che un'autentica visione giusnaturalistica apre nuove orizzonti per comprendere meglio la questione di Dio e dell'uomo nel discorso normativo che si inserisce armonicamente nella dimensione ecclesiale. Il tema ha avuto origine dall'osservazione del dialogo interdisciplinare tra toelogia morale, filosofia del diritto e scienze giuridiche. Prende in esame la relazione tra ordine morale e giuridico individuando le questioni (...) che si pongono per la teologia morale in quanto disciplina che tratta i problemi della fondazione della norma morale. La problematica verte sul temine natura normativa la quale si esplica in veste di progetto antropologico. La rinascita del pensiero giusnaturalistico in Germania e il fulcro di questa tesi. (shrink)

A compelling approach among works on temporality, phenomenology, and the ecologies of the new sound worlds, Enacting Musical Time argues that musical time is itself the site of the interaction between musical sounds and a situated, embodied listener, created by the moving bodies of participants engaged in musical activities.

Joseph Ratzinger has never produced one theological opus that would encompass his whole theological vision and its corollaries in particular matters. However, despite this, during his long and prolific theological career, in his many publications and interventions he has touched upon nearly every conceivable theological topic. Although these topics are often very diverse, they are also interrelated by the general intellectual framework on which Ratzinger operates. By analysing his insights about particular issues that, at first glance, may appear to have (...) little relationship with each other, it is possible to find some interesting connections that point to the existence of a greater vision. This article will examine the questions of power, authority and truth in Ratzinger's theology and will link the notions of politics and liturgy to demonstrate the existence of such a single, holistic approach. Questions that will be asked in this short study include: How does Ratzinger understand authority and power in general? What are some limits of power that, according to him, both secular and ecclesiastical authorities must recognise and respect? What are some threats to the correct understanding of legitimate authority in the church and in politics today? How do all these issues relate to the main principles of his theology as a whole? (shrink)

Celem artykułu jest analiza problemu autointerpretacji w odniesieniu do formuły „mocnego wartościowania” oraz zagadnienia osoby ludzkiej. Przedmiotem analiz jest koncepcja wartości Charlesa Taylora ujęta w kontekście jego filozoficznych inspiracji oraz krytyki niektórych jego rozwiązań. Poznanie własnego „ja” dokonuje się w kontekście odkrywania i realizacji takich wartości jak wolność, godność, autentyczność, sprawczość i odpowiedzialność, itp. Można wskazać na relację, jaka zachodzi między strukturą aksjologiczną a osobą, która pozwala jej na autointerpretację. Z jednej strony dzięki wartościom podmiot określa własną tożsamość, z drugiej (...) strony stanowią one element „wspólnoty znaczeń” – umożliwiający zrozumienie „sytuacji ludzkiej” i dialog między osobami. Świat wartości odkrywamy w trakcie artykulacji i interpretacji własnych uczuć oraz rozumienia uczuć innych ludzi. Wartości umożliwiają rozmowę na temat tego, co nas łączy lub dzieli, umożliwiają porozumienie, a także na artykułowanie przyczyn nieporozumienia. Rozwój osoby jest zapośredniczony w kulturowych formach ekspresji oraz w dialogu z innymi podmiotami. Koncepcja Taylora stanowi ciekawą i ważną próbę połączenia refleksji z zakresu filozofii człowieka, teorii wartości i filozofii kultury ekspresji. (shrink)

Over the years, the Austrian School of Economics has created the image of a thinker associated with ideas of liberalism. The views of members of this school are often considered controversial. However, the concept of freedom clearly displayed by the Austrians is very popular among economists. Carl Menger is said to be the founder and a leading member of the Austrian School of Economics, and his works are mostly devoted to methodology and economic theory. Nevertheless, you can also find his (...) views on the sphere of economic liberalism and freedom. Almost 150 years after the publication of Menger’s main works, it emerged that he had created not only the timeless foundations of the theory and methodology of economics, but his theory of subjective value had become the bedrock which is used to this day in deliberations on economic liberalism. The economy pursued by Menger (based primarily on the ideas of subjectivism and individualism) continues to be an important and timeless foundation for the development of the doctrine of economic liberalism. This article is a review based on an analysis of the literature on the subject. (shrink)

What is properly Emersonian about moral perfectionism? Perhaps the best answer is: not much. Stanley Cavell's signature concept, which claims close kinship to Emerson's ethical philosophy, seems upon careful examination to be rather far removed from it. Once we get past the broad, unproblematic appeals to Emerson's “unattained but attainable self,” and consider the specific content and implications of perfectionism, the differences between the two thinkers become too substantive – and too fraught with serious misunderstandings – to be ignored. It (...) is above all Cavell's complete disregard for the Emersonian “moral sentiment” that jeopardizes his claim to be a continuator of Emerson's legacy in ethical philosophy. I would not deny that Cavell's own work stands as an extraordinary contribution to contemporary ethics. Nor would I dispute his title as the living philosopher who has done more than any other to restore Emerson to his rightful place in the history of American philosophy, as a thinker worthy of the highest consideration. Still less would I discount the boldness and originality of Cavell's readings of Emerson. What I am contesting, rather, is the propriety of attaching the label “Emersonian” to the notion of perfectionism, especially in view of its strong anti-metaphysical bias. The Emerson canon provides ample grounds for rejecting Cavell's claim as largely unsubstantiated and in a number of crucial ways inconsistent with the moral sentiment's firm grounding of ethics in ontology. (shrink)

This article attempts to descriptively characterize the impact of the sharing economy, using Uber as an example, on the social welfare of those people working via the app. For this purpose, the author proposes a theoretical concept of a technologically networked economy, which is a component of a broader heuristic model of a technologically networked reality. Furthermore, a critical review of the different approaches to the sharing economy and the diverse practices within it have been carried out. The results of (...) the theoretical exploration of this increasingly popular phenomenon revealed parallels with the problems of nondigital labor markets in the field of the workforce. The clear separation of grassroots sharing practices from those in name only like Uber suggest that the latter do not realize social welfare more broadly than ordinary capitalist enterprises. (shrink)