Lysophosphatidic acid (LPA) is a lipid mediator with a wide variety of biological actions, particularly as an inducer of cell proliferation, migration and survival. LPA binds to specific G‐protein‐coupled receptors and thereby activates multiple signal transduction pathways, including those initiated by the small GTPases Ras, Rho, and Rac. LPA signaling has been implicated in such diverse processes as wound healing, brain development, vascular remodeling and tumor progression. Knowledge of precisely how and where LPA is produced has long proved elusive. Excitingly, (...) it has recently been discovered that LPA is generated from precursors by ‘autotaxin’, a once enigmatic exo‐phosphodiesterase implicated in tumor cell motility. Exogenous phospholipases D can also produce LPA, which may contribute to their toxicity. Here we review recent progress in our understanding of LPA bioactivity, signaling and synthesis. BioEssays 26:870–881, 2004. © 2004 Wiley Periodicals, Inc. (shrink)

Recent findings necessitate revision of the traditional view of G protein‐coupled receptor (GPCR) signaling and expand the diversity of mechanisms by which receptor signaling influences cell behavior in general. GPCRs elicit signals at the plasma membrane and are then rapidly removed from the cell surface by endocytosis. Internalization of GPCRs has long been thought to serve as a mechanism to terminate the production of second messengers such as cAMP. However, recent studies show that internalized GPCRs can continue to either stimulate (...) or inhibit cAMP production in a sustained manner. They do so by remaining associated with their cognate G protein subunit and adenylyl cyclase at endosomal compartments. Once internalized, the GPCRs produce cellular responses distinct from those elicited at the cell surface. (shrink)

Deductivism is not merely a logical technique, but also a theory of normativity: it provides an objective and universal standard of evaluation. Contemporary dialectical logic rejects deductive normativity, replacing its universal standard by an intersubjective standard. It is argued in this paper that dialectical normativity does not improve upon deductive normativity. A dialogico-rhetorical alternative is proposed.

The introduction of novel diagnostic techniques in clinical domains such as genomics and radiology has led to a rich ethical debate on how to handle unsolicited findings that result from these innovations. Yet while unsolicited findings arise in both genomics and radiology, most of the relevant literature to date has tended to focus on only one of these domains. In this article, we synthesize and critically assess similarities and differences between “scanning the body” and “sequencing the genome” from an ethical (...) perspective. After briefly describing the novel diagnostic contexts leading to unsolicited findings, we synthesize and reflect on six core ethical issues that relate to both specialties: terminology; benefits and risks; autonomy; disclosure of unsolicited findings to children; uncertainty; and filters and routine screening. We identify ethical rationales that pertain to both fields and may contribute to more ethically sound policies. Considerations of preserving public trust and ensuring that people perceive healthcare policies as fair also support the need for a combined debate. (shrink)

If climate change represents a severe threat to humankind, why then is response to it characterized by inaction at all levels? The authors argue there are two complementary explanations for the lack of motivation. First, our moral judgment system appears to be unable to identify climate change as an important moral problem and there are pervasive doubts about the agency of individuals. This explanation, however, is incomplete: Individual emitters can effectively be held morally responsible for their luxury emissions. Second, doubts (...) about individual agency have become overly emphasized and fail to convincingly exonerate individuals from responsibility. This book extends the second explanation for the motivational gap, namely that the arguments for the lack of individual agency do in fact correspond to mechanisms of moral disengagement. The use of these mechanisms enables consumption elites to maintain their consumptive lifestyles without having to accept moral responsibility for their luxury emissions. (shrink)

The Random Number Generation task has a long history in neuropsychology as an assessment procedure for executive functioning. In recent years, understanding of human behavior has gradually changed from reflecting a static to a dynamic process and this shift in thinking about behavior gives a new angle to interpret test results. However, this shift also asks for different methods to process random number sequences. The RNG task is suited for applying non-linear methods needed to uncover the underlying dynamics of random (...) number generation. In the current article we present RandseqR: an R-package that combines the calculation of classic randomization measures and Recurrence Quantification Analysis. RandseqR is an easy to use, flexible and fast way to process random number sequences and readies the RNG task for current scientific and clinical use. (shrink)

ion is instrumental for our understanding of how numbers are cognitively represented. We propose that the notion of abstraction becomes testable from within the framework of simulated cognition. We describe mental simulation as embodied, grounded, and situated cognition, and report evidence for number representation at each of these levels of abstraction.

The expression that professionals should be led by their moral or ethical compass is increasingly used by academics, policy makers, professionals, and educational institutes. Dutch universities of applied sciences (UAS), for example, explicitly aim to educate their students to become professionals equipped with a moral compass. This moral or ethical compass is a metaphor of which people intuitively grasp its meaning, but our literature review also shows that various interpretations are possible. We found three clusters of proposed ethical compasses expressing (...) its a) content, b) form, or c) use, which we present in this article. Thereafter, we evaluate which compass can meaningfully assist (young) professionals and, therefore, should be part of the aims and content of education provided by UAS. Based on this evaluation, we describe the possibilities and boundaries of UAS’ contribution to the development of their students’ ethical compass. (shrink)

"Absolute Beginners" is a multi-approach study of the founding role of the Absolute as the very beginning of knowledge in medieval philosophy (Henry of Ghent, Richard Conington), the subject being addressed from historical, methodological, ...

\noindent\textbf{Introduction} Online interventions hold great potential for Therapeutic Change Process Research (TCPR), a field that aims to relate in-therapeutic change processes to the outcomes of interventions. Online a client is treated essentially through the language their counsellor uses, therefore the verbal interaction contains many important ingredients that bring about change. TCPR faces two challenges: how to derive meaningful change processes from texts, and secondly, how to assess these complex, varied and multi-layered processes? We advocate the use text mining and multi-level (...) models (MLMs): the former offers tools and methods to discovers patterns in texts; the latter can analyse these change processes as outcomes that vary at multiple levels. \noindent\textbf{Method} We (re-)used the data from \cite{Lamers2015} because it includes outcomes and the complete online intervention for clients with mild depressive symptoms. We used text mining to obtain basic text-variables from e-mails, that we analysed through MLMs. \noindent\textbf{Results} We found that we could relate outcomes of interventions to variables containing text-information. We conclude that we can indeed bridge text mining and MLMs for TCPR as it was possible to relate text-information (obtained through text mining) to multi-levelled TCPR outcomes (using a MLM). \noindent\textbf{Discussion} Text mining can be helpful to obtain change processes, which is also the main challenge for TCPR. We showed how MLMs and text mining can be combined, but our proposition leaves open how to obtain the most relevant textual operationalization of TCPR concepts. That requires interdisciplinary collaboration and discussion. The future does look bright: based on our proof-of-concept study we conclude that MLMs and text mining can indeed advance TCPR. (shrink)

In this paper I consider whether there is a measure of coherence that could be rightly claimed to generalize the notion of logical equivalence. I show that Fitelson’s (2003) proposal to that effect encounters some serious difficulties. Furthermore, there is reason to believe that no mutual-support measure could ever be suitable for the formalization of coherence as generalized logical equivalence. Instead, it appears that the only plausible candidate for such a measure is one of relative overlap. The measure I propose (...) in this paper is quite similar to Olsson’s (2002) proposal but differs from it by not being susceptible to the type of counterexample that Bovens and Hartmann (2003) have devised against it. (shrink)

Fictional realists maintain that fictional characters are part of the world’s ontology. In an influential article, Anthony Everett argues that the fictional realist is thereby committing herself to problematic entities. Among these are entities that are indeterminately identical. Recently, Ross Cameron and Richard Woodward have answered Everett’s worry using the same strategy. They argue that the fictional realist can bypass the problematic identities by contending that they are merely semantically indeterminate. This paper concisely surveys Everett’s original argument, Cameron’s and Woodward’s (...) responses, and then argues that the strategy employed by Cameron and Woodward fails to satisfactorily answer Everett’s worries. (shrink)

This book provides a novel formulation and defence of moral error theory. It also provides a novel solution to the so-called now what question; viz., the question what we should do with our moral thought and talk after moral error theory. The novel formulation of moral error theory uses pragmatic presupposition rather than conceptual entailment to argue that moral judgments carry a non-negotiable commitment to categorical moral reasons. The new answer to the now what question is pragmatic presupposition substitutionism: we (...) should substitute our current moral judgments, which pragmatically presuppose the existence of categorical moral reasons with ‘schmoral’ judgments that pragmatically presuppose the existence of a specific class of prudential reasons. These are prudential reasons that, when we act on them, contribute to the satisfaction of what the author calls ‘the fundamental desire’; namely, the desire to live in a world with mutually beneficial cooperation. (shrink)

Although climate change jeopardizes the fundamental human rights of current as well as future people, current actions and ambitions to tackle it are inadequate. There are two prominent explanations for this motivational gap in the climate ethics literature. The first maintains that our conventional moral judgement system is not well equipped to identify a complex problem such as climate change as an important moral problem. The second explanation refers to people’s reluctance to change their behaviour and the temptation to shirk (...) responsibility. We argue that both factors are at play in the motivational gap and that they are complemented by crucial moral psychological insights regarding moral disengagement, which enables emitters to dissociate self-condemnation from harmful conduct. In this way, emitters are able to maintain their profligate, consumptive lifestyle, even though this conflicts with their moral standards with respect to climate change. We provide some illustrations of how strategies of moral disengagement are deployed in climate change and discuss the relationship between the explanations for the motivational gap and moral disengagement. On the basis of this explanatory framework, we submit that there are three pathways to tackle the motivational gap and moral disengagement in climate change: making climate change more salient to emitters and affirming their self-efficacy; reconsidering the self-interested motives that necessitate moral disengagement; and tackling moral disengagement directly. (shrink)

This article aims to read feminist new materialisms (Barad), together with ‘postulated’ linguistic or cultural primacy of Queer Theory (Butler), to show how both are engaged in similar critical-ethical endeavours. The central argument is that the criticism of Barad and new materialisms misses Butler’s materialistic insights due to a narrow interpretation of Butler's alleged social-constructivist position. There is, therefore, a specific focus on where they both make similar ethical appeals. Moreover, the article relies on Adorno's negative dialectic to highlight an (...) interpretation of Barad and Butler as being part of the same dialectical movement, in which materialism and idealism fluctuate in their mutual criticisms, thus continuing the procession towards 'new knowledge' and emancipation, or freedom, through their motions back and forth. (shrink)

If coherence is to have justificatory status, as some analytical philosophers think it has, it must be truth-conducive, if perhaps only under certain specific conditions. This paper is a critical discussion of some recent arguments that seek to show that under no reasonable conditions can coherence be truth-conducive. More specifically, it considers Bovens and Hartmann’s and Olsson’s “impossibility results,” which attempt to show that coherence cannot possibly be a truth-conducive property. We point to various ways in which the advocates of (...) a coherence theory of justification may attempt to divert the threat of these results. (shrink)

Despite the Aristotelian renaissance in the philosophy of education, the development of virtue has not received much attention. This is unfortunate, because an attempt to draft an Aristotelian model of moral development can help philosophers to evaluate the contribution Aristotelian virtue ethics can make to our understanding of moral development, provide psychologists with a potentially richer account of morality and its development, and help educators to understand the developmental phase people are in. In the article, it is argued that the (...) Aristotelian categories of the ‘morally indifferent’, ‘un-self-controlled’, ‘self-controlled’ and ‘properly virtuous’ can be interpreted as the successive stages or levels of a comprehensive developmental model. For each stage, it will be made clear whether people are committed to virtue, whether they act virtuously or not, whether they act with pleasure or pain, and which desires and reasons they have for acting. The article closes with suggestions about what needs to be done if the proposed Aristotelian account of moral development is to become psychologically more realistic and educationally useful. (shrink)

There is a strong intuition that we can listen to works of music, yet musical ontologies on which works of music are abstract objects, perhaps most notably, type theories of music, seem to imply that this is impossible. This problem has received relatively little attention in the literature. I here explore and develop a solution suggested by Julian Dodd and argue that it has at least two problematic consequences, namely (i) that some works of music cannot be listened to unless (...) one has already studied the relevant score or through a similar process learned roughly what the work requires of its performances and (ii) that it is possible for two people to listen to different musical works while listening to the same performance. (shrink)

In this article, I examine the relation between philosophy and madness. It is often assumed that madness has to be suppressed, excluded, or conquered before a philosophically sensible text, logical argument, or world of meaning can appear. I argue, instead, that a certain concept of madness, when grafted on phenomenological psychiatry and philosophical mysticism, is intrinsically related to the project of philosophy. With the help of experiences of madness as presented in psychiatry and articulated in mad autobiographical reports, including my (...) own, I will show that philosophy and madness are in closer connection than is commonly assumed. In the introduction, I refer to some superficial... (shrink)

This is a study of the nature of time. In it, redeploying an argument first presented by McTaggart, the author argues that although time itself is real, tense is not. He accounts for the appearance of the reality of tense - our sense of the passage of time, and the fact that our experience occurs in the present - by showing how time is indispensable as a condition of action. Time itself is further analysed, and Dr Mellor gives answers to (...) most of the metaphysical questions it provokes, concerning the relation of time to space, the dissection of time, and its relation to change and causation. (shrink)

Full virtue and practical wisdom comprise the end of neo-Aristotelian moral development, but wisdom cannot be cultivated straight away through arguments and teaching. Wisdom is integrated with, and builds upon, habituation: the acquisition of virtuous character traits through the repeated practice of corresponding virtuous actions. Habit formation equips people with a taste for, and commitment to, the good life; furthermore it provides one with discriminatory and reflective capacities to know how to act in particular circumstances. Unfortunately, habituation is often understood (...) primarily as a method suitable only for children. This article examines whether Aristotle limited habituation to children and, if not, what the relationship between habituation and wisdom beyond childhood might look like. This article concludes that wisdom-guided habituation is also possible for adults who continue and confirm their already established virtuous habits. The implications of this for professional moral education are subsequently discussed. (shrink)

Die verschiedenen Aufsatze, die in diesem Band aus Anlass des 60. Geburtstages von Jan A. Aertsen gesammelt sind, widmen sich der Spannung zwischen der Metaphysik und dem Guten. Lasst sich eine Metaphysik denken, die vom Begriff des Guten ausgeht? Diese Spannung durchlauft die Philosophie in Antike und Mittelalter wie ein roter Faden und hat nicht selten zu Weiterentwicklung oder Neuorientierung Anlass gegeben. Die verschiedenen Aufsatze behandeln den Anspruch von Ethik und Metaphysik, Erste Philosophie zu sein (Carlos Steel); die Idee einer (...) praktischen Metaphysik (Theo Kobusch); die Metaphysik des Guten bei Gilbert von Poitiers (Scott MacDonald); den Begriff des Guten bei Thomas von Aquin (Rudi te Velde); die Stellung des Guten und das Metaphysikverstandnis Bonaventuras (Andreas Speer); das Gute als Ersterkanntes bei Berthold von Moosburg (Wouter Goris). Zusammen lesen sie sich als eine Deutung von der Moglichkeit und der Qualitat der Synthese von Platonismus und Aristotelismus, wie sie in der mittelalterlichen Transzendentalienlehre erstrebt wird. (shrink)

ABSTRACT This paper aims to offer a new perspective on role modelling by examining adolescents’ own efforts to lead a morally virtuous life. While traditional approaches to moral education emphasize the importance of teachers as role models, this study proposes a shift in focus towards adolescents’ own role models. Drawing on the philosophical concept of moral self-cultivation and psychological insights on identity development and social cognitive learning, it is argued that adolescents have the ability to cultivate their moral character by (...) emulating others. However, empirical evidence suggests that adolescents often do not perceive teachers as their role models. Consequently, moral educational theories are advised to demand less of teachers as role models. Teachers could invest more time in understanding students’ personal role models and encourage them to compare these role models with their own behavior. By acknowledging and addressing students’ role models, teachers can facilitate the moral self-cultivation of adolescents. (shrink)

It is well known that Carnap, early in his philosophical career, took most of metaphysics to consist of meaningless pseudostatements. In contrast to this meaning-theoretic critique of metaphysics, we develop what we take to be Carnap’s later value-based critique. We argue that this later critique is forceful against several central contemporary metaphysical debates, its origin in the principle of tolerance notwithstanding.

Bovens and Hartmann (Bayesian Epistemology, Oxford: Oxford University Press, 2003) propose to analyze coherence as a confidence-boosting property. On the basis of this idea, they construct a new probabilistic theory of coherence. In this paper, I will attempt to show that the resulting measure of coherence clashes with some of the intuitions that motivate it. Also, I will try to show that this clash is not due to the view on coherence as a confidence-boosting property or to the general features (...) of the model that Bovens and Hartmann use to analyze coherence. It will turn out that there is at least one other measure that is similarly based on the concept of a confidence-boosting property, but does not have the same counterintuitive results. (shrink)

Bovens and Hartmann propose to analyze coherence as a confidence-boosting property. On the basis of this idea, they construct a new probabilistic theory of coherence. In this paper, I will attempt to show that the resulting measure of coherence clashes with some of the intuitions that motivate it. Also, I will try to show that this clash is not due to the view on coherence as a confidence-boosting property or to the general features of the model that Bovens and Hartmann (...) use to analyze coherence. It will turn out that there is at least one other measure that is similarly based on the concept of a confidence-boosting property, but does not have the same counterintuitive results. (shrink)

Slavoj iek's refusal to sketch an alternative to the global liberal-capitalist order, combined with his claim that there is an urgent need for a repolitization of, most of all, the economy, raises the question of the possibility of radical political thought and action. Considering fundamentalisms and politically correct multiculturalism not as oppositional, but as correlative to the depolitization of post-modern societies, iek invokes the emancipatory legacy of Europe in an attempt to reinvent Marxism in a way similar to what Lenin, (...) thrown into an open situation, had to do in 1917 between the revolutions. A single question confronts political philosophy today: is liberal-capitalist democracy the ultimate horizon of our political practice, or is it possible to open up the space for another political articulation? The key to a repolitization is to identify with the symptom of the existing global order's false claim to Universality, with the excluded part of no part who politicizes it's predicament by claiming to stand for the real universal. In order not to discard political struggle as unrealistic, today's cynical realist consensus must be broken. Taking things as they really are has become the dominant ideological mode that keeps people from thinking about alternatives. The remedy is to show that things never are really as they are. (shrink)

While researchers are currently studying various forms of social network interaction among teachers for their impact on educational policy implementation and practice, knowledge on how various types of networks are interrelated is limited. The goal of this study is to understand the dimensionality that may underlie various types of social networks in schools. We assessed seven types of social interaction using social network data of 775 educators from 53 Dutch elementary schools. The quadratic assignment procedure, multidimensional scaling and network visualisations (...) were used to discern underlying dimensions that may explain the interrelatedness of these seven types of social networks. Findings suggest small to moderate similarity between the seven forms of social interaction. Results support a distinction between instrumental and expressive networks and suggest a second dimension of mutual in(ter)dependence to explain differences in social interaction among teachers. Implications for practice and research on teacher collaboration are discussed. (shrink)

"First published by Oxford University Press, 1916."--Title page verso.

Abating the threat climate change poses to the lives of future people clearly challenges our development models. The 2011 Human Devel- opment Report rightly focuses on the integral links between sustainability and equity. However, the human development and capabilities approach emphasizes the expansion of people’s capabilities simpliciter, which is ques- tionable in view of environmental sustainability. We argue that capabilities should be defined as triadic relations between an agent, constraints and poss- ible functionings. This triadic syntax particularly applies to climate (...) change: since people’s lives and capabilities are dependent on the environment, sus- tainable human development should also include constraining human activi- ties in order to prevent losses in future people’s well-being due to the adverse effects of exacerbated climate change. On this basis, we will advocate that the goals of sustainable human development should be informed by a fra- mework that consists of enhancing capabilities up to a threshold level, as well as constraining the functionings beyond this threshold in terms of their green- house gas emissions. (shrink)

Climate change and other contemporary harms are often depicted as New Harms because they seem to constitute unprecedented challenges. This New Harms Discourse rests on two important premises, both of which we criticise on empirical grounds. First, we argue that the Premise of changed conditions of human interaction—according to which the conditions regarding whom people affect have changed recently and which emphasises the difference with past conditions of human interaction—risks obfuscating how humanity’s current predicament is merely the transient result of (...) long-term, gradual processes and developments. Second, we dispute the Premise that New Harms have certain features that render them new and argue that New Harms share characteristics with other harms. On the basis of these premises, the New Harms Discourse concludes that climate change is a unique social challenge that requires radically new moral thinking, but we argue that this Uniqueness Myth distracts attention from the valuable lessons we can draw from humanity’s successes and failures in dealing with past harms. We will illustrate how action to tackle climate change and other complex, systemic harms can be informed by the interdisciplinary study of historic harms. We will argue that rejecting the New Harms Discourse is not only empirically justified, it also gives cause for optimism, because it opens up the possibility to draw upon the past to face problems in the present and future. (shrink)

This book provides a novel formulation and defence of moral error theory. It also provides a novel solution to the so-called now what question; viz., the question what we should do with our moral thought and talk after moral error theory. The novel formulation of moral error theory uses pragmatic presupposition rather than conceptual entailment to argue that moral judgments carry a non-negotiable commitment to categorical moral reasons. The new answer to the now what question is pragmatic presupposition substitutionism: we (...) should substitute our current moral judgments, which pragmatically presuppose the existence of categorical moral reasons with ‘schmoral’ judgments that pragmatically presuppose the existence of a specific class of prudential reasons. These are prudential reasons that, when we act on them, contribute to the satisfaction of what the author calls ‘the fundamental desire’; namely, the desire to live in a world with mutually beneficial cooperation. (shrink)

In his Inleidinge tot de Hollandsche Rechts-geleerdheid, Hugo Grotius wrote an accessible introductory overview of Hollandic law, in which he combined insights from the learned law (ius commune) with the particular law of Holland. The Inleidinge was read by generations of Dutch law students, and would thus become very influential in the Roman-Dutch tradition. This contribution studies how the topic of representation, especially in a business context, was treated in Grotius’s Inleidinge. On the basis of an analysis of the Justinianic (...) Corpus iuris, the medieval ius commune tradition and – especially – early modern scholarship from the Low Countries, it is argued that Grotius’s Inleidinge by and large followed the communis opinio among the learned scholars, although on one important point – namely the acquisition by a third party of a claim on the basis of a stipulatio alteri – Grotius went beyond that communis opinio and, thus, opened the way for a gradual wider legal acceptance of active direct representation. (shrink)

Bertrand Russell’s _Principles of Mathematics_ (1903) gives rise to several interpretational challenges, especially concerning the theory of denoting concepts. Only relatively recently, for instance, has it been properly realised that Russell accepted denoting concepts that do not denote anything. Such empty denoting concepts are sometimes thought to enable Russell, whether he was aware of it or not, to avoid commitment to some of the problematic non-existent entities he seems to accept, such as the Homeric gods and chimeras. In this paper, (...) I argue first that the theory of denoting concepts in _Principles of __Mathematics_ has been generally misunderstood. According to the interpretation I defend, if a denoting concept shifts what a proposition is about, then the aggregate of the denoted terms will also be a constituent of the proposition. I then show that Russell therefore could not have avoided commitment to the Homeric gods and chimeras by appealing to empty denoting concepts. Finally, I develop what I think is the best understanding of the ontology of _Principles of __Mathematics_ by interpreting some difficult passages. (shrink)

In order to develop a model of equitable and sustainable distribution, this paper advocates integrating the ecological space paradigm and the capabilities approach. As the currency of distribution, this account proposes a hybrid of capabilities and ecological space. Although the goal of distributive justice should be to secure and promote people’s capabilities now and in the future, doing so requires acknowledging that these capabilities are dependent on the biophysical preconditions as well as inculcating the ethos of restraint. Both issues have (...) been highlighted from the perspective of the ecological space paradigm. Concerning the scope of distributive justice, the integration can combine the advantages of the ecological space paradigm regarding the allocation of the responsibilities involved in environmental sustainability with the strength of the capabilities approach regarding people’s entitlements. The pattern of distribution starts from a capability threshold. In order to achieve this threshold, ecological space should be provided sufficiently, and the remaining ecological space budget could then be distributed according to the equal per capita principle. (shrink)

The capabilities approach of Amartya Sen and Martha Nussbaum has become an influential viewpoint for addressing issues of social justice and human de- velopment. It has not yet, however, given adequate theoretical consideration to the requirements of environmental sustainability. Sen has focussed on the instrumental importance of human development for achieving sustainability, but has failed to consider the limits of this account, especially with respect to consumption-reduction. Nussbaum has criticised constraining material consumption for its paternalistic prescription of one particular conception (...) of the good life, without considering it as an imperative of justice. We discuss two possible extensions of the capabilities approach. First, the concept of ca- pability ceilings contains several attractive elements, but it also suffers from some shortcomings. Therefore, second, we advocate constraining people’s combinations of functionings in accordance with a personal budget which con- sists of a fair share of environmental resources. (shrink)

I critically discuss two kinds of argument in favour of ontological pluralism and argue that they fail to show that ways of being are explanatorily fruitful.

According to moral error theory, moral discourse is error-ridden. Establishing error theory requires establishing two claims. These are that moral discourse carries a non-negotiable commitment to there being a moral reality and that there is no such reality. This paper concerns the first and so-called non-negotiable commitment claim. It starts by identifying the two existing argumentative strategies for settling that claim. The standard strategy is to argue for a relation of conceptual entailment between the moral statements that comprise moral discourse (...) and the statement that there is a moral reality. The non-standard strategy is to argue for a presupposition relation instead. Error theorists have so far failed to consider a third strategy, which uses a general entailment relation that doesn’t require intricate relations between concepts. The paper argues that both entailment claims struggle to meet a new explanatory challenge and that since the presupposition option doesn’t we have prima facie reason to prefer it over the entailment options. The paper then argues that suitably amending the entailment claims enables them to meet this challenge. With all three options back on the table the paper closes by arguing that error theorists should consider developing the currently unrecognised, non-conceptual entailment claim. (shrink)