This essay contributes to our understanding of the relation between the philosophies of Hegel and Sellars. While most treatments of this relation have focused on metaphysics or epistemology, I focus on ethics, and in particular on the formulation of moral agency. I argue that Hegel and Sellars arrive at a similar metaphilosophical rejection of individual moral agency in favor of conceptions of moral agency as the outcome of social mediation. To demonstrate this, I trace how Hegel and Sellars offer parallel (...) resolutions of the ‘Kantian paradox’: the apparent problem that, in Kantian ethics, moral agents must both freely self-legislate the moral law unto themselves and stand in a dutiful relation to the moral law as a necessary function of practical reason. Drawing Hegel and Sellars together in this way casts new light on Sellars’s understudied ethical theory and further evidences the contemporary relevance of Hegel’s moral philosophy. (shrink)

Dipesh Chakrabarty has identified Immanuel Kant’s distinction between the human’s moral and animal dimensions as an underlying source of the failure of the humanities to respond to the ecological crises of the Anthropocene. Although relevant for the environmental humanities generally, Chakrabarty’s critique is especially germane to contemporary environmental philosophy. It shows how the reality of anthropogenic climate change renders central aspects of Kant’s influential conception of human nature untenable. While closer examination of Kant’s writings corroborates the core of Chakrabarty’s reading, (...) there nonetheless remain positive resources in Kant’s philosophy for contemporary environmental thinking, for, although Kant does regard the human’s moral and animal dimensions as conceptually separable, he also understands them to be inextricably bound within the nature of human beings. Attending to the interplay between these Kantian commitments, a new critical insight into one of the basic tensions of the Anthropocene era can be attained. (shrink)

Kant on the Human Animal offers the first systematic analysis of this central but neglected dimension of Kant's philosophy.

Despite recent strides in the direction of achieving a more equitable and genuine place for Indigenous voices in the conservation conversation, the conservation movement must more deliberately and thoroughly grapple with the legacy of its deeply settler colonial history if it is to, in actuality and not merely in rhetoric, achieve the aim of being more equitable. In this article, we show how the conservation movement, historically and still largely today, traffics in certain ethical and political values that are, in (...) principle or in effect, anti-Indigenous. Through this examination, we hope to reveal how present-day conservation efforts, even if ‘well-meaning’ or nominally deferential regarding Indigenous peoples and perspectives, in fact reinforce settler colonial structures. In particular, we critique the notion of the uninhabited wilderness as a conservation ideal and the disavowal of originary violence (along with a parallel positing of settler nativism) in the articulation of conservation historicity and the founding of conservation movements. We conclude by offering some steps conservationists can take to alter their practices, methods, and values in ways that recognize, respect, and reciprocate with Indigenous peoples. (shrink)

This essay offers an analysis of Daniel Defoe’s Robinson Crusoe read in concert with Derrida’s treatment of the novel in the second volume of The Beast and the Sovereign. Drawing from Derrida while developing insights of my own, I assemble the elements of a unique account and critique of the logic of human sovereignty. Focusing on a crucial moment in both the novel and in Derrida’s reading of it, I argue the thesis that human sovereignty rests upon a logically prior (...) mastery of both non-human animals and subordinated human beings—a relation of mastery I call the human/animal logic of sovereignty. (shrink)

Emotions play a prominent role in social life, yet the direct impact of emotions on behavior and judgment remains a point of disagreement. The current investigation used meta-analysis to test two theoretical perspectives. The emotion-as-direct-causation perspective asserts that current emotions guide behavior and judgment, whereas the emotion-as-feedback perspective asserts that anticipated emotions guide behavior and judgment. Although the emotion-as-direct-causation perspective was frequently tested, only 22% of tests were significant. Although the emotion-as-feedback perspective was rarely tested, 87% of tests were significant. (...) Our findings suggest that empirical evidence is weak for the default assumption that emotion is the proximal cause of behavior and judgment. Our preliminary findings also suggest that anticipated emotion reliably impacts social behavior and judgment. (shrink)

The tethering of Indigenous peoples to animality has long been a central mechanism of settler colonialism. Focusing on North America from the seventeenth century to the pres­ent, this essay argues that Indigenous animalization stems from the settler imposition onto Native Americans of dualistic notions of human/animal difference, coupled with the settler view that full humanity hinges on the proper cultivation of land. To further illustrate these claims, we attend to how Native Americans have been and continue to be animalized as (...) both predators and pests, and show how these modes of animalization have and continue to provide settlers motive and justification for the elimination of Native peoples and the extractive domination of Native lands. (shrink)

While the evidence on the effectiveness of different psychotherapies is often strong, it is not settled whereby and how these therapies work. Knowledge on the causal factors and change mechanisms is of high clinical and public relevance, as it contributes to the empirically informed advancement of psychotherapeutic interventions. Here, digitalized research approaches might possess the potential to generate new insights into human behavior change, contributing to augmented interventions and mental healthcare practices with better treatment outcomes. In this perspective article, we (...) describe recent findings of research into change mechanisms that were only feasible with digital tools and outline important future directions for this rather novel branch of research. Furthermore, we indicate several challenges and pitfalls that are to be solved, in order to advance digitalized psychotherapy process research, both methodologically and technologically. (shrink)

Objective: Deficits in affective processing are associated with impairments in both mental and physical health. The role of affective processing in patients with functional somatic complaints such as irritable bowel syndrome remains unclear. Most studies have focused on the capacity for emotional awareness and expression, but neglect other dimensions of affective processing. Therefore, this study aimed to systematically analyze differences in six different dimensions of affective processing between patients with IBS and healthy controls. Additionally, we exploratively investigated the impact of (...) IBS symptom severity, psychological distress, and attachment styles on affective processing in IBS. Methods: A controlled cross-sectional multi-center study was conducted. Overall, 127 patients with IBS were compared with 127 matched HCs using multivariate analysis of variances. Affective processing was operationalized in line with the affect cascade model on six specific dimensions: emotional experience, emotional awareness, affect tolerance, affect differentiation, affect regulation, and emotional communication. They were measured using two subscales of the Mentalizing Questionnaire and four subscales of the Operationalized Psychodynamic Diagnosis–Structure Questionnaire. Linear regression analysis was used to investigate the influence of IBS symptom severity, depression, anxiety, and anxious and avoidant attachment styles on the different dimensions of affective processing in IBS. Results: Patients with IBS compared to HCs showed deficits in all six dimensions of affective processing. Deficits were largest for affect tolerance and lowest for emotional experience and emotional awareness. Moderate effect sizes were found for affect differentiation, emotional communication, and affect regulation. Moreover, explorative analyses indicated that affective processing in patients with IBS was significantly influenced by levels of anxiety and insecure attachment. Conclusion: The results indicate a specific pattern of affective processing abilities in patients with IBS. The deficits in affective processing are more prominent in the area of understanding and tolerating difficult affective states than experiencing affective states. This opens interesting perspectives for the development of specific psychotherapeutic interventions. (shrink)

We propose a formal framework for interpretable machine learning. Combining elements from statistical learning, causal interventionism, and decision theory, we design an idealised explanation game in which players collaborate to find the best explanation for a given algorithmic prediction. Through an iterative procedure of questions and answers, the players establish a three-dimensional Pareto frontier that describes the optimal trade-offs between explanatory accuracy, simplicity, and relevance. Multiple rounds are played at different levels of abstraction, allowing the players to explore overlapping causal (...) patterns of variable granularity and scope. We characterise the conditions under which such a game is almost surely guaranteed to converge on a optimal explanation surface in polynomial time, and highlight obstacles that will tend to prevent the players from advancing beyond certain explanatory thresholds. The game serves a descriptive and a normative function, establishing a conceptual space in which to analyse and compare existing proposals, as well as design new and improved solutions. (shrink)

Lipsey and Lancaster's "general theory of second best" is widely thought to have significant implications for applied theorizing about the institutions and policies that most effectively implement abstract normative principles. It is also widely thought to have little significance for theorizing about which abstract normative principles we ought to implement. Contrary to this conventional wisdom, I show how the second-best theorem can be extended to myriad domains beyond applied normative theorizing, and in particular to more abstract theorizing about the normative (...) principles we should aim to implement. I start by separating the mathematical model used to prove the second-best theorem from its familiar economic interpretation. I then develop an alternative normative-theoretic interpretation of the model, which yields a novel second best theorem for idealistic normative theory. My method for developing this interpretation provides a template for developing additional interpretations that can extend the reach of the second-best theorem beyond normative theoretical domains. I also show how, within any domain, the implications of the second-best theorem are more specific than is typically thought. I conclude with some brief remarks on the value of mathematical models for conceptual exploration. (shrink)

Artificial intelligence has historically been conceptualized in anthropomorphic terms. Some algorithms deploy biomimetic designs in a deliberate attempt to effect a sort of digital isomorphism of the human brain. Others leverage more general learning strategies that happen to coincide with popular theories of cognitive science and social epistemology. In this paper, I challenge the anthropomorphic credentials of the neural network algorithm, whose similarities to human cognition I argue are vastly overstated and narrowly construed. I submit that three alternative supervised learning (...) methods—namely lasso penalties, bagging, and boosting—offer subtler, more interesting analogies to human reasoning as both an individual and a social phenomenon. Despite the temptation to fall back on anthropomorphic tropes when discussing AI, however, I conclude that such rhetoric is at best misleading and at worst downright dangerous. The impulse to humanize algorithms is an obstacle to properly conceptualizing the ethical challenges posed by emerging technologies. (shrink)

Why study notations, diagrams, or more broadly the variety of nonverbal “representations” or “signs” that are used in mathematical practice? This chapter maps out recent work on the topic by distinguishing three main philosophical motivations for doing so. First, some work (like that on diagrammatic reasoning) studies signs to recover norms of informal or historical mathematical practices that would get lost if the particular signs that these practices rely on were translated away; work in this vein has the potential to (...) broaden our view of the specific normativity of mathematics beyond logical proof. Second, some work focuses on signs to highlight the open-ended and “nonrigorous” aspects of mathematical practice, and the role of these aspects in the historical development of mathematics. The third motivation is based on the following observation: the reason differences in signs matter in mathematics is that humans are finite agents, with cognitive and computational limitations. Accordingly, studying signs can be a way to study how human computational constraints shape the mathematics that we do, and to tackle the topic of mathematical understanding. (shrink)

_ Convention_ was immediately recognized as a major contribution to the subject and its significance has remained undiminished since its first publication in 1969. Lewis analyzes social conventions as regularities in the resolution of recurring coordination problems-situations characterized by interdependent decision processes in which common interests are at stake. Conventions are contrasted with other kinds of regularity, and conventions governing systems of communication are given special attention.

According to dispositionalism about modality, a proposition <p> is possible just in case something has, or some things have, a power or disposition for its truth; and <p> is necessary just in case nothing has a power for its falsity. But are there enough powers to go around? In Yates (2015) I argued that in the case of mathematical truths such as <2+2=4>, nothing has the power to bring about their falsity or their truth, which means they come out both (...) necessary and not possible. Combining this with axiom (T), it is easy to derive a contradiction. I suggested that dispositionalists ought to retreat a little and say that <p> is possible just in case either p, or there is a power to bring it about that p, grounding the possibility of mathematical propositions in their truth rather than in powers. Vetter’s (2015) has the resources to provide a response to my argument, and in her (2018) she explicitly addresses it by arguing for a plenitude of powers, based on the idea that dispositions come in degrees, with necessary properties a limiting case of dispositionality. On this view there is a power for <2+2=4>, without there being a power to bring about its truth. In this paper I argue that Vetter’s case for plenitude does not work. However, I suggest, if we are prepared to accept metaphysical causation, a case can be made that there is indeed a power for <2+2=4>. (shrink)

Chapter 20 David Kovacs’ “Essence, Grounding, and Explanation” sets out four different ways in which essence might be taken to relate to the notion of grounding or metaphysical explanation, i.e., the type of connection that is often expressed by means of non-causal “in virtue of” or “because”-claims: (i) Unity: essence and grounding belong to a unified set of explanatory concepts; (ii) Supplementation: essence and grounding both contribute in their own way to a distinctive type of explanation; (iii) Independence: essence (...) is a sui generis notion with no straightforward conceptual links to grounding; and (iv) Irrelevance: essence is not an explanatory notion at all and therefore should not be viewed as connected to explanatory notions like grounding. As Kovacs brings out in the chapter, a wide variety of attitudes are represented in the literature even among philosophers who are sympathetic to the recent “hyperintensional” turn in metaphysics when it comes to the question of how the notions of essence and grounding interact with one another. (shrink)

Doctors’ strikes are legally permissible in the UK, with the situation differing in other countries. But are they morally permissible? Doug McConnell and Darren Mann have systematically attempted to dismiss the arguments for the moral impermissibility of doctors’ strikes and creatively attempted to provide further moral justification for them. Unfortunately for striking doctors, they fail to achieve this. Meanwhile, junior doctors’ strikes have continued in the UK through 2023 and have now extended into 2024. In this response, which focuses on (...) the UK situation and specifically junior doctors’ strikes in the National Health Service (NHS) in England, I will demonstrate a central problem with their arguments—namely that they underplay the harms caused by prolonged doctors’ strikes by ignoring the harms to patients with cancer. This weakens their conclusion that strikes are morally permissible in terms of the conditions and thresholds they set. I then provide a psychological critique of their justification for strikes in terms of the interests of the public. It follows that invoking the controversial concept of supererogatory action is ungrounded but also absurd when you consider time-critical cancer care. If those representing striking doctors wish to maintain a modicum of moral respectability, they should mitigate for patients with cancer and negotiate reasonably and with urgency. (shrink)

Fichte-Studien, volume 49 (Leiden: Brill/Rodopi Publishers, 8 April 2021), edited by David W. Wood, 471pp. -/- Presenting new critical perspectives on J.G. Fichte’s Wissenschaftslehre, this volume of articles in English by an international group of scholars addresses the topic of first principles in Fichte’s writings. Especially discussed are the central text of his Jena period, the 1794/95 Grundlage der gesammten Wissenschaftslehre, as well as later versions like the Wissenschaftslehre nova methodo (1796-99) and the presentations of 1804 and 1805. Also (...) included are new studies on the first principles of the particular sub-disciplines of Fichte’s system, such as the doctrines of aesthetics, nature, right, ethics, and history. The volume also contains a number of miscellaneous essays on Fichte research, as well as several book reviews. (shrink)

Foreword: Synchronicity is more than a happy accident by Brian Tart -- The quest -- Cycles of history and the law of one -- What is synchronicity? -- Understanding the sociopath -- The global adversary -- Karma is real -- Reincarnation -- Mapping out the afterlife -- The hero and his story -- The first and second acts of the hero -- Facing your fear and completing the quest -- Joan of arc rises again -- The 2,160-year cycle between rome (...) and the usa -- Vietnam, watergate and the fall of the iron curtain -- The sky is not falling-only our blindfolds -- September 11th-from both sides of the veil -- The thirteen years' war repeats in america -- 9/11 and the defeat of the cabal-the cycle perspective -- History gets a wicked case of deja vu -- Fomenko's cycles of history-and the Book of Daniel -- Explaining the cycles and the fourth-density shift. (shrink)

Our aim in this entry is to articulate the state of the art in the moral psychology of personal identity. We begin by discussing the major philosophical theories of personal identity, including their shortcomings. We then turn to recent psychological work on personal identity and the self, investigations that often illuminate our person-related normative concerns. We conclude by discussing the implications of this psychological work for some contemporary philosophical theories and suggesting fruitful areas for future work on personal identity.

As business and society is an inherently multi-disciplinary scholarly area, the book will draw from work in areas outside of business and management, such as psychology, sociology, philosophy, religious studies, economics and other related fields, as well as the natural sciences, education, and other professional areas of study.

In the twenty-first century, the debate about life on other worlds is quickly changing from the realm of speculation to the domain of hard science. Within a few years, as a consequence of the rapid discovery by astronomers of planets around other stars, astronomers very likely will have discovered clear evidence of life beyond the Earth. Such a discovery of extraterrestrial life will change everything. Knowing the answer as to whether humanity has company in the universe will trigger one of (...) the greatest intellectual revolutions in history, not the least of which will be a challenge for at least some terrestrial religions. Which religions will handle the discovery of extraterrestrial life with ease and which will struggle to assimilate this new knowledge about our place in the universe? Some religions as currently practiced appear to only be viable on Earth. Other religions could be practiced on distant worlds but nevertheless identify both Earth as a place and humankind as a species of singular spiritual religious importance, while some religions could be practiced equally well anywhere in the universe by any sentient beings. Weintraub guides readers on an invigorating tour of the world's most widely practiced religions. It reveals what, if anything, each religion has to say about the possibility that extraterrestrial life exists and how, or if, a particular religion would work on other planets in distant parts of the universe. (shrink)

Longtermism is the thesis that in a large class of decision situations, the best thing we can do is what is best for the long-term future. The scope question for longtermism asks: how large is the class of decision situations for which this is true? In this paper, I suggest that the scope of longtermism may be narrower than many longtermists suppose. I identify a restricted version of longtermism: swamping axiological strong longtermism (swamping ASL). I identify three scope-limiting factors - (...) probabilistic and decision-theoretic phenomena which, when present, tend to reduce the prospects for swamping ASL. I argue that these scope-limiting factors are often present in human decision problems, then use two case studies from recent discussions of longtermism to show how the scope-limiting factors lead to a restricted, if perhaps nonempty, scope for swamping ASL. (shrink)

Epistemologists have recently proposed a number of norms governing rational inquiry. My aim in this paper is to unify and explain recently proposed norms of inquiry by developing a general account of the conditions under which inquiries are rational, analogous to theories such as evidentialism and reliabilism for rational belief. I begin with a reason-responsiveness conception of rationality as responding correctly to possessed normative reasons. I extend this account with a series of claims about the normative reasons for inquiry that (...) we possess. I apply the account to shed light on two classes of norms that have featured prominently in recent discussions: norms of clutter avoidance forbidding agents from engaging in trivial inquiries, and norms of logical non-omniscience governing properties such as the deductive closure and consistency of an agent's belief state. I conclude with a discussion of the sense in which norms of inquiry should be regarded as epistemic norms. (shrink)

We apply a familiar distinction from philosophy of language to a class of material artifacts that are sometimes said to “speak”: statues. By distinguishing how statues speak at the locutionary level versus at the illocutionary level, or what they say versus what they do, we obtain the resource for addressing two topics. First, we can explain what makes statues distinct from street art. Second, we can explain why it is mistaken to criticize—or to defend—the continuing presence of statues based only (...) on what they represent. Both explanations are driven by the same core idea: the significance of statues arises primarily from what they do, and not what they say. (shrink)

This is a corrected version of the final proofs. I've fixed a number of typos, and corrected a blunder in chapter 4. In chapter 4 I say that 'this is this' is analytic, and 'this is not this' is antonymous. This is inconsistent with what I say in chapter 5, and not what I actually think. Rather, 'this is this' is taugologous, and 'this is not this' is contradictory. Analyticity and autnonmy are sense properties while tautologousness and contradictoriness are formal (...) logical properties. Heading, ToC and Index updated accordingly. (Oxford will make these corrections in their online version and in future print runs.). (shrink)

This is the first sustained, whole-Bible treatment on the theme of meeting God face to face. Starting with Genesis and ending with Revelation, the author systematically covers the major events in salvation history, all of which reveal the beauty of encountering God's grace in abundance.

People are often offended by beliefs, expect apologies for beliefs, apologize for their own beliefs. In many mundane cases, people are morally criticized for their beliefs. Intuitively, then, beliefs seem to sometimes wrong people. Recently, the philosophical literature has picked up on this theme, and has started to discuss it under the heading of doxastic wrongdoing. In this paper we argue that despite the strength of such initial intuitions, at the end of the day they have to be rejected. If (...) it can be ever truthfully asserted that beliefs wrong, this is always derivative – beliefs wrong only in virtue of other things (like evidence-gathering actions) wronging. We distinguish between modest and ambitious doxastic wrongdoing theories (the former deny, while the latter accept, the possibility of a morally wrong yet epistemically permissible belief); we argue that each of these options faces insurmountable problems; and we offer partly debunking explanations of the intuitions purportedly supporting doxastic wrongdoing. (shrink)

Is ontologizing about art rightly held accountable to artistic practice, and, if so, how? Julian Dodd argues against such accountability. His target is “local descriptivism,” a meta-ontological principle that he contrasts with meta-ontological realism. The local descriptivist thinks that folk-theoretic beliefs implicit in our practices somehow determine the ontological characters of artworks. I argue, however, that according a grounding role to artistic practice in the ontology of art does not conflict with meta-ontological realism. Practice must ground our ontological inquiries because (...) our task is to make sense of the practices into which artworks enter. Terms like ‘musical work,’ as employed by the ontologist, play an essentially explanatory role in this endeavor, and it is only in terms of this role that we can specify the object of our ontological inquiries. But neither our practices nor our folk beliefs are sacrosanct. In taking ontology of art to be reflectively accountable to artistic practice, I also reject Amie Thomasson's claim that it involves conceptual analysis and therefore cannot rightly claim to be directly revisionary of folk understandings. Ontology of art involves not conceptual analysis but the codification of a practice in a way that clarifies that practice. (shrink)

20世纪初是德语世界正式出版关于中国哲学史著作的起点。1909—1924年之间德语世界出版了若干关于中国哲学史的论文和专著，通过调查作者们的教育背景和研究成果，以及其代表作的写作背景、内容框架及其影响 ，可以勾勒出这一时期德语学界中国哲学研究的概况。从分析当时德语学界对中国哲学的认识范围和中国哲学史框架构建的一般情况，可以看出欧洲对中国哲学和哲学史研究的一些核心问题所在。前现代中国哲学史在德语地区接 纳和传播的过程与方式，这一至今德国与中国学界尚未涉足的空白领域，值得研究并填补。[The beginning of the twentieth century was the starting point for the production of works on the history of Chinese philosophy in the German-speaking world. Between 1909 and 1924, a number of essays and monographs on the history of Chinese philosophy were published in the German-speaking contexts, and by investigating the educational backgrounds and research results of the authors, as well as the backgrounds of the authors, the frameworks for presenting the content, and the influence of these works, an overview (...) of the study of Chinese philosophy in in the German language during that period can be outlined. By analyzing the scope of knowledge of Chinese philosophy and the general construction of the framework for the history of Chinese philosophy in German-speaking academia at that time, it is possible to discern some of the core issues at stake in the study of Chinese philosophy and the history of philosophy in Europe. The process and manner of the reception and dissemination of the history of pre-modern Chinese philosophy in the German-speaking region, a field that has not yet been addressed sufficiently by German and Chinese academics, deserves to be studied and completed.]. (shrink)

Christian pro-lifers often respond to Thomson’s defense of abortion that the violinist is allowed to die while the embryo is killed. Boonin and McMahan counter that this distinction does not provide an objection to extraction abortions that disconnect embryos and allow them to die. I disagree. I first argue that letting die and killing are not to be distinguished by differences between acts and omissions, moral and immoral motives, intentional or unintentional deaths, and causing or not causing a pathology. I (...) offer a taxonomy in which hysterotomies turn out to be killings. I then argue that if either the placenta is considered an organ of the embryo or the embryo is construed as a part of the pregnant woman, then abortion pills kill rather than allow death. So, assuming that killing people is morally worse than letting them die, extraction abortions can be condemned to the same degree as other abortions. (shrink)

Many philosophers have claimed that the folk endorse moral universalism. Some have taken the folk view to support moral universalism; others have taken the folk view to reflect a deep confusion. And while some empirical evidence supports the claim that the folk endorse moral universalism, this work has uncovered intra-domain differences in folk judgments of moral universalism. In light of all this, our question is: why do the folk endorse moral universalism? Our hypothesis is that folk judgments of moral universalism (...) are generated in part by a desire to punish. We present evidence supporting this across three studies. On the basis of this, we argue for a debunking explanation of folk judgments of moral universalism. Our results not only further our understanding of the psychological processes underpinning folk judgments of moral universalism. They also bear on philosophical discussions of folk meta-ethics. (shrink)

This essay provides a novel account of iterated epistemic states. The essay argues that states of epistemic determinacy might be secured by countenancing iterated epistemic states on the model of fixed points in the modal $\mu$-calculus. Despite the epistemic indeterminacy witnessed by the invalidation of modal axiom 4 in the sorites paradox -- i.e. the KK principle: $\square$$\phi$ $\rightarrow$ $\square$$\square$$\phi$ -- a hyperintensional epistemic $\mu$-automaton permits fixed points to entrain a principled means by which to iterate epistemic states and account (...) thereby for necessary conditions on self-knowledge. The hyperintensional epistemic $\mu$-calculus is applied to the iteration of the epistemic states of a single agent instead of the common knowledge of a group of agents, and is thus a novel contribution to the literature. (shrink)

I argue that virtual reality is a sort of genuine reality. In particular, I argue for virtual digitalism, on which virtual objects are real digital objects, and against virtual fictionalism, on which virtual objects are fictional objects. I also argue that perception in virtual reality need not be illusory, and that life in virtual worlds can have roughly the same sort of value as life in non-virtual worlds.

Calling is a very important concept in Christianity. In the medieval era, calling was restricted to ecclesiastical work alone, a devotion to the life of contemplation. Ordinary work or physical labour was not considered qualified to be a calling. Martin Luther was the one who taught that the ordinary work of the ordinary people was also God’s calling and equally spiritual as the ecclesiastical work. However, Miroslav Volf, a Croatian theologian, criticised Luther that his view of calling was too static (...) and irrelevant to the modern context where people often choose to quit a job because of its negative effects and some people have to do multiple jobs in order to make ends meet. While recognising the validity of Volf’s critique, this article seeks to demonstrate that even in the modern context, calling is still a very important theological concept to reflect upon work. Luther’s vocational view of work could be retrieved in discussing the theology of work by putting it in dialogue with Calvin, Kuyper, and other theologians.Contribution: This article seeks to show that the concept of calling is indispensable in constructing a sound theology of work for the modern context. By understanding work as calling, Christian workers are enabled to see how they are participating in God’s redemptive work through their jobs. (shrink)

Between 1873 and 1876, Felix Klein published a series of papers that he later placed under the rubric anschauliche Geometrie in the second volume of his collected works (1922). The present study attempts not only to follow the course of this work, but also to place it in a larger historical context. Methodologically, Klein’s approach had roots in Poncelet’s principle of continuity, though the more immediate influences on him came from his teachers, Plücker and Clebsch. In the 1860s, Clebsch reworked (...) some of the central ideas in Riemann’s theory of Abelian functions to obtain complicated results for systems of algebraic curves, most published earlier by Hesse and Steiner. These findings played a major role in enumerative geometry, whereas Plücker’s work had a strongly qualitative character that imbued Klein’s early studies. A leitmotif in these works can be seen in the interplay between real curves and surfaces as reflected by their transformational properties. During the early 1870s, Klein and Zeuthen began to explore the possibility of deriving all possible forms for real cubic surfaces as well as quartic curves. They did so using continuity methods reminiscent of Poncelet’s earlier approach. Both authors also relied on visual arguments, which Klein would later advance under the banner of intuitive geometry (anschauliche Geometrie). (shrink)