Logic, Logical connectives, Verbal disputes, Proof theory, Non-classical logic.

Logic isn’t special. Its theories are continuous with science; its method continuous with scientific method. Logic isn’t a priori, nor are its truths analytic truths. Logical theories are revisable, and if they are revised, they are revised on the same grounds as scientific theories. These are the tenets of anti-exceptionalism about logic. The position is most famously defended by Quine, but has more recent advocates in Maddy, Priest, Russell, and Williamson. Although these authors agree on many methodological issues about logic, (...) they disagree about which logic anti-exceptionalism supports. Williamson uses an anti-exceptionalist argument to defend classical logic, while Priest claims that his anti-exceptionalism supports nonclassical logic. This paper argues that the disagreement is due to a difference in how the parties understand logical theories. Once we reject Williamson’s deflationary account of logical theories, the argument for classical logic is undercut. Instead an alternative account of logical theories is offered, on which logical pluralism is a plausible supplement to anti-exceptionalism. (shrink)

Anti-exceptionalism about logic is the Quinean view that logical theories have no special epistemological status, in particular, they are not self-evident or justified a priori. Instead, logical theories are continuous with scientific theories, and knowledge about logic is as hard-earned as knowledge of physics, economics, and chemistry. Once we reject apriorism about logic, however, we need an alternative account of how logical theories are justified and revised. A number of authors have recently argued that logical theories are justified by abductive (...) argument (e.g. Gillian Russell, Graham Priest, Timothy Williamson). This paper explores one crucial question about the abductive strategy: what counts as evidence for a logical theory? I develop three accounts of evidential confirmation that an anti-exceptionalist can accept: (1) intuitions about validity, (2) the Quine-Williamson account, and (3) indispensability arguments. I argue, against the received view, that none of the evidential sources support classical logic. (shrink)

ABSTRACTWhat do we disagree about when we disagree about logic? On the face of it, classical and nonclassical logicians disagree about the laws of logic and the nature of logical properties. Yet, s...

Aesthetic Expertise, Ole Martin Skilleås explains what aesthetic expertise is, what it's used for, how it manifests across diverse roles within aesthetic practices, and why we should want access to it to live our aesthetic lives to the full.

Med afsæt i Niklas Luhmanns systemteori og med eksempler inden for videnskab, kunst, økonomi m.m. argumenterer forfatteren for at der i dag ikke findes et etisk regelsæt som kan fortælle os hvad vi skal gøre og ikke gøre.

Papers in philosophical bioethics often discuss unrealistic scenarios and defend controversial views. Why is that, and what is this kind of work good for? My aim in the first part of this paper is to specify how philosophical bioethics relates to other types of work in bioethics, and to explain the role of the unrealistic scenarios and the controversial views. In the second part, I propose three strategies for doing research in philosophical bioethics that makes a valuable contribution to the (...) bioethics community at large. (shrink)

"The nature of intuition and its relation to other mental faculties, particularly perception, is one of the most hotly contested debates in philosophy of mind and psychology. Do intuitions justify belief or merely dispositions to believe? Is intuition a mental state with distinctive phenomenal qualities and if so, how do these differ from normal perceptual states? Drawing on the most recent philosophical research on intuition and perception, Ole Koksvik defends the idea that intuition not only justifies belief but can play (...) a much wider role in our everyday epistemic lives than previously thought. Arguing that intuitional experience is similar to perceptual experience he develops a novel view of intuition as conscious experience. His argument involves both a close description of the kind of experience that intuition is and a defence of intuition against criticism from experimental philosophy. The picture that emerges defends intuitions not because they can be found to be true or false but because they permit us to consider the world as it is might otherwise be and are continuous with the rest of general human inquiry"--. (shrink)

The philosophical discussion about logical constants has only recently moved into the substructural era. While philosophers have spent a lot of time discussing the meaning of logical constants in the context of classical versus intuitionistic logic, very little has been said about the introduction of substruc-tural connectives. Linear logic, affine logic and other substructural logics offer a more fine-grained perspective on basic connectives such as conjunction and disjunction, a perspective which I believe will also shed light on debates in the (...) philosophy of logic. In what follows I will look at one particularly interesting instance of this: The development of the position known as logical inferentialism in view of substructural connectives. I claim that sensitivity to structural properties is an interesting challenge to logical inferentialism, and that it ultimately requires revision of core notions in the inferentialist litera-ture. Specifically, I want to argue that current definitions of proof theoretic harmony give rise to problematic nonconservativeness as a result of their insensitivity to substructurality. These nonconservativeness results are undesirable because they make it impossible to consistently add logical constants that are of independent philosophical interest. (shrink)

The model-theoretic analysis of the concept of logical consequence has come under heavy criticism in the last couple of decades. The present work looks at an alternative approach to logical consequence where the notion of inference takes center stage. Formally, the model-theoretic framework is exchanged for a proof-theoretic framework. It is argued that contrary to the traditional view, proof-theoretic semantics is not revisionary, and should rather be seen as a formal semantics that can supplement model-theory. Specifically, there are formal resources (...) to provide a proof-theoretic semantics for both intuitionistic and classical logic. We develop a new perspective on proof-theoretic harmony for logical constants which incorporates elements from the substructural era of proof-theory. We show that there is a semantic lacuna in the traditional accounts of harmony. A new theory of how inference rules determine the semantic content of logical constants is developed. The theory weds proof-theoretic and model-theoretic semantics by showing how proof-theoretic rules can induce truth-conditional clauses in Boolean and many-valued settings. It is argued that such a new approach to how rules determine meaning will ultimately assist our understanding of the apriori nature of logic. (shrink)

Billions of animals live and die under deplorable conditions in factory farms. Despite significant efforts to reduce human consumption of animal products and to encourage more humane farming practices, the number of factory-farmed animals is nevertheless on an upward trajectory. In this paper, we suggest that the high levels of suffering combined with short life-expectancies make the situation of many factory-farmed animals relevantly similar to that of palliative patients. Building on this, we discuss the radical option of seeking to reduce (...) the suffering of factory-farmed animals through the use of drugs that alleviate pain and distress, administered under a regimen where experiential wellbeing is prioritized over the aim of avoiding drug-dependence. (shrink)

In some philosophical arguments an important role is played by the claim that certain situations differ from each other with respect to phenomenology. One class of such arguments are minimal pair arguments. These have been used to argue that there is cognitive phenomenology, that high-level properties are represented in perceptual experience, that understanding has phenomenology, and more. I argue that facts about our mental lives systematically block such arguments, reply to a range of objections, and apply my critique to some (...) examples from the literature. (shrink)

In discussion about basic theoretical approaches in a non-Cartesian psychology several candidates for a key concept were proposed, such as action, activity, relation, dialogue and discourse. None of these concepts, however, sufficiently grounds psychological theories of individual psychology in social practice. To accomplish this we need to conceptualize subjects as participants in structures of ongoing social practice. In this paper I argue why and address issues of subjectivity as encountered by persons in their participation in complex structures of social practice. (...) I introduce the concept of personal conduct of life and life-trajectory as elaborations of my theory. And I discuss this theoretical approach and show what is at stake in developing it by comparing it to similar approaches in the current literature on the person, self, and identity. (shrink)

We argue that deliberative decision-making that is inclusive, transparent and accountable can contribute to more trustworthy and legitimate decisions on difficult ethical questions and political trade-offs during the pandemic and beyond.

Bitcoin is a peer-to-peer electronic payment system that operates as an independent currency. This paper is a philosophical investigation of the ontological constitution of Bitcoin. Using Slavoj Žižek’s ontological triad of the real, the symbolic and the imaginary, the paper distinguishes between three ideal typical theories of money: commodity theory, fiat theory, and credit theory. The constitution of Bitcoin is analysed by comparing the currency to each of these ideal types. It is argued that Bitcoin is commodity money without gold, (...) fiat money without a state, and credit money without debt. In conclusion, it is suggested that Bitcoin poses an ideological challenge to conventional forms of money in so far as it not only provokes sedimented beliefs about money but also exposes the forms of exploitation, risk and even violence inherent in the existing system of state authorized credit money. (shrink)

Logical pluralism has been in vogue since JC Beall and Greg Restall 2006 articulated and defended a new pluralist thesis. Recent criticisms such as Priest 2006a and Field 2009 have suggested that there is a relationship between their type of logical pluralism and the meaning-variance thesis for logic. This is the claim, often associated with Quine 1970, that a change of logic entails a change of meaning. Here we explore the connection between logical pluralism and meaning-variance, both in general and (...) for Beall and Restall's theory specifically. We argue that contrary to what Beall and Restall claim, their type of pluralism is wedded to meaning-variance. We then develop an alternative form of logical pluralism that circumvents at least some forms of meaning-variance. (shrink)

In bilateral systems for classical logic, assertion and denial occur as primitive signs on formulas. Such systems lend themselves to an inferentialist story about how truth-conditional content of connectives can be determined by inference rules. In particular, for classical logic there is a bilateral proof system which has a property that Carnap in 1943 called categoricity. We show that categorical systems can be given for any finite many-valued logic using $n$-sided sequent calculus. These systems are understood as a further development (...) of bilateralism—call it multilateralism. The overarching idea is that multilateral proof systems can incorporate the logic of a variety of denial speech acts. So against Frege we say that denial is not the negation of assertion and, with Mark Twain, that denial is more than a river in Egypt. (shrink)

In this thesis I seek to advance our understanding of what intuitions are. I argue that intuitions are experiences of a certain kind. In particular, they are experiences with representational content, and with a certain phenomenal character. -/- In Chapter 1 I identify our target and provide some important reliminaries. Intuitions are mental states, but which ones? Giving examples helps: a person has an intuition when it seems to her that torturing the innocent is wrong, or that if something is (...) red it is coloured. We can also provide an initial characterisation of the state by saying that it has representational content, often causes belief, and appears to justify belief. In addition, there is something it is like to have an intuition: intuition has a certain phenomenal character. -/- Some argue that intuition does not explain anything which cannot be explained by other mental states. One version of this view takes intuition to reduce to belief. In Chapter 2 I argue that this entails that agents are rationally criticisable in situations where we know they are not, and that such views are therefore untenable. A parallel argument shows that the corresponding approach to perception fails. This suggests a similarity in nature: both intuition and perception are experiences. -/- Others take intuition to reduce to a disposition to have a belief. In Chapter 3 I consider a line of argument against such views, find it unsuccessful, and present two new arguments. One is likely to be dialectically ineffective. The other suffers no such weakness: it shows that the proposed reduction fails. As before, the argument also applies to perception, and suggests that intuition and perception are both experiences. -/- In the remainder of the thesis I develop an account of intuition as an experience. I distinguish between content-specific and attitude-specific phenomenology, and argue that intuition lacks the former (Chapter 4), but has the latter (Chapter 5). This allows us to say what intuition is: it is is an experience with representational content and with attitude-specific phenomenology of a certain kind. -/- In Chapter 6 I put this account of intuition to use. When a person has a perceptual or intuitional experience, I argue that simply having the experience is what makes the subject justified in believing what the experience represents. Moreover, what explains that intuition and perception can justify belief in this way is precisely their phenomenal character. (shrink)

To understand how dialogue has become increasingly important to leadership, this book explores the notion of the protreptic.

This paper presents the Norwegian national health care system and the manner in which the problems of rationing and pluralism of values create new ethical and political challenges. The paper concludes with some doubts about the feasibility of the transformation taking place within this kind of health care system, with special reference to governmental control and consumer preference. Keywords: national health care, pluralism, rationing, two-tier system CiteULike Connotea Del.icio.us What's this?

The paper is a contribution to current debates about conspiracy theories within philosophy and cultural studies. Wittgenstein’s understanding of language is invoked to analyse the epistemological effects of designating particular questions and explanations as a ‘conspiracy theory’. It is demonstrated how such a designation relegates these questions and explanations beyond the realm of meaningful discourse. In addition, Agamben’s concept of sovereignty is applied to explore the political effects of using the concept of conspiracy theory. The exceptional epistemological status assigned to (...) alleged conspiracy theories within our prevalent paradigms of knowledge and truth is compared to the exceptional legal status assigned to individuals accused of terrorism under the War on Terror. The paper concludes by discussing the relation between conspiracy theory and ‘the paranoid style’ in contemporary politics. (shrink)

When Ian Hacking won the Holberg International Memorial Prize 2009 his candidature was said to strengthen the legitimacy of the prize after years of controversy. Ole Jacob Madsen, Johannes Servan and Simen Andersen Øyen have talked to Ian Hacking about current questions in the philosophy and history of science.

A volume in the series The Montana Mathematics Enthusiast: Monograph Series in Mathematics Education. Series Editor: Bharath Sriraman, The University of Montana The title of the book is Critique as Uncertainty. Thus Ole Skovsmose sees uncertainty as an important feature of any critical approach. He does not assume the existence of any blue prints for social and political improvements, nor that certain theoretical structures can provide solid foundations for a critical activities. For him critique is an open and uncertain activity. (...) This also applies to critical mathematics education. Critique as Uncertainty includes papers Ole Skovsmose already has published as well as some newly written chapters. The book addresses issues about: landscapes of investigations, students' foregrounds, mathematics education and democracy, mathematics and power. Finally it expresses concerns of a critical mathematics education. (shrink)

Nonclassical theories of truth have in common that they reject principles of classical logic to accommodate an unrestricted truth predicate. However, different nonclassical strategies give up different classical principles. The paper discusses one criterion we might use in theory choice when considering nonclassical rivals: the maxim of minimal mutilation.

Most of us think that states are justified in incarcerating criminals, sometimes for decades. In this paper I suggest that if states are justified in this, they are also justified in inflicting certain forms of corporal punishment. Many forms of corporal punishment are less burdensome than long-term incarceration, and arguably, they are also cheaper, fairer, more deterring, and less destructive of the social and economic networks that convicts often depend on for future reintegration into society. After presenting a pro tanto (...) case for corporal punishment, I consider a number of objections. I conclude that although there are genuine downsides to corporal punishment that must be taken very seriously, the case for the judicial use of this punishment method is much stronger than what is commonly assumed. (shrink)

A common argument against prostitution states that selling sex is harmful because it involves selling something deeply personal and emotional. More and more of us, however, believe that sexual encounters need not be deeply personal and emotional in order to be acceptable—we believe in the acceptability of casual sex. In this paper I argue that if casual sex is acceptable, then we have few or no reasons to reject prostitution. I do so by first examining nine influential arguments to the (...) contrary. These arguments purport to pin down the alleged additional harm brought about by prostitution by appealing to various aspects of its practice, such as its psychology, physiology, economics and social meaning. For each argument I explain why it is unconvincing. I then weight the costs against the benefits of prostitution, and argue that, in sum, prostitution is no more harmful than a long line of occupations that we commonly accept without hesitation. (shrink)

Dialectic IV convenes contributions with new takes on the long held proposition that architects are providers of design services. They service everyone from the status quo all the way to the subaltern. We know well how architects have historically fashioned themselves to be able to procure the most valued building commissions a people have to offer. There are temples, churches, and shrines, palaces and private villas, and surely monuments, state institutions, and corporate headquarters. But how have the members of the (...) same profession managed to fashion themselves as the custodians of the public good? (shrink)

Cover -- Title -- Copyright -- Contents -- List of figures -- Contributors -- Acknowledgements -- 1 Introduction -- 2 Philip Melanchthon and his significance for natural philosophy -- 3 Daniel Sennert and the chymico-atomical reform of medicine -- 4 The changing face of Lutheranism in post-Reformation Denmark -- 5 After Tycho: Philippist astronomy and cosmology in the work of Brahe's Scandinavian assistants -- 6 The Book of Nature and the Word of God: Lutheran natural philosophy and medicine in early-seventeenth-century (...) Denmark and Norway -- 7 Holger Rosenkrantz, 'the Learned' (1574-1642). (shrink)

See introduction in the uploaded document.

In this article, I explore the significance of place in education. The historical context is expressed by the ecological and climate crises in a world distinguished by the unjust distribution of privileges and burdens. I elucidate the concept of place by entering the tradition of the pedagogy of place. Here, the significance of place is accentuated with a sensitivity to the local context, in contrast to other educational approaches that emphasize more generic, abstract knowledge. A central premise is the notion (...) of place as a delimited unit that is distinguished from other places. This stable notion, I argue, needs to be reconsidered in the present. With reference to Massey, I accentuate relations as pivotal to a notion of place that accommodates both a sense of belonging and conflicts of power and interest. I hold that education at this time in history should be sensitive to our situatedness in everyday life’s web of relationships. Still, general knowledge is required to bring up perspectives that enable students to critically conceive the place in which they are situated. I make and discuss these claims with reference to and in critique of Young’s notion of powerful knowledge and Klafki’s reformulation of German Didaktik. A central concern is to clarify the mediation of situated knowledge and general knowledge in educational practice. In the final part of the article, I bring in elements from critical hermeneutics and utopian thinking, approaching Bildung as a process involving situatedness, distantiation, and refiguration. (shrink)