Context In some cases, physicians estimate that continuous sedation until death may have a life-shortening effect. The accuracy of these estimations can be questioned.Aim The aim of this study is to compare two approaches to estimate the potential life-shortening effect of continuous sedation until death.Methods In 2008, 370 Dutch physicians filled out a questionnaire and reported on their last patient who received continuous sedation until death. The potential life-shortening effect of continuous sedation was estimated through a direct approach and an (...) indirect approach . The intrarater agreement between both approaches was determined with a weighted κ.Results According to the direct approach, sedation might have had a life-shortening effect in 51% of the cases and according to the indirect approach in 84%. The intrarater agreement between both approaches was fair . In 10% of all cases, the direct approach yielded higher estimates of the extent to which life had been shortened; in 58% of the cases, the indirect approach yielded higher estimates.Conclusions The results show a discrepancy between different approaches to estimate the potential life-shortening effect of continuous sedation until death. (shrink)

Environmental ethics has to deal with the challenge of reconciling contrasting ecocentric and animal-centric perspectives. Two classic attempts at this reconciliation, which both adopted the metaphor of concentric circles, are discussed. It is concluded that the relationship between the animal and its environment, whether the latter is human or natural, should be a pivotal element of such reconciliation. An alternative approach is presented, inspired by care ethics, which proposes that caring for wild animals implies caring for their relationship to the (...) natural environment and thus taking action to maintain wildlife habitat. This type of care is labelled non-specific care because it is not directed towards the individual wild animal and its specific individual needs. In contrast, caring for domestic animals is called specific care because it is much more directed towards the individual animal's needs. (shrink)

The discussion about the impact of agricultural biotechnology on Africa is deeply divided and contains widely diverging claims about the impact of biotechnology on African farmers. Building upon literature on the ‘good farmer’ that highlights that farmers identities are an important factor in explaining the success or failure of agricultural change, we argue that the identity of the farmer is an undervalued yet crucial aspect for understanding the debate about the impact of agricultural biotechnology on African farmers. In this article (...) we therefore investigate what farmers’ identities are implicated in the arguments about the impact of biotechnology on African farmers. We aim to identify the main fault lines in different accounts of the African biotechnology farmer by analysing the identities ascribed to them in two prominent cases of controversy: the debates at the 2002 World Summit on Sustainable Development in Johannesburg and the discussion about the impact of biotechnology on smallholder farmers in the Makhathini flats in KwaZulu Natal, South Africa. Our findings demonstrate that arguments about biotechnology are informed by diverging conceptions of who the African farmer is, what is important for the African farmer, and what role the African farmer has in relation to agricultural biotechnology. These findings remain relevant for current discussions on gene editing technologies like CRISPR-Cas. Openly discussing these different views on the identity of smallholder farmers is crucial for moving forward in the biotechnology controversy and can inform future attempts to elicit the farmer’s voice. (shrink)

Intuitionistically. a set has to be given by a finite construction or by a construction-project generating the elements of the set in the course of time. Quantification is only meaningful if the range of each quantifier is a well-circumscribed set. Thinking upon the meaning of quantification, one is led to insights?in particular, the so-called continuity principles?which are surprising from a classical point of view. We believe that such considerations lie at the basis of Brouwer?s reconstruction of mathematics. The predicate ?α (...) is lawless? is not acceptable, the lawless sequences do not form a well-circumscribed intuitionistic set, and quantification over lawless sequences does not make sense. (shrink)

This introduction examines the semantics of natural languages.

This article explores the relation between innovation and resources that are governed as commons by looking at the governance of potato genetic resources, especially in the context of the emergence ofhybrid diploid potato breedingthat will enable potato propagation through true seeds. As a new breeding tool, hybrid diploid potato breeding may not only revolutionize traditional potato breeding practices, it may also strongly affect current governance modes of potato genetic resources as a commons. Contrary to conventional accounts of the commons that (...) treat technological innovation mainly as an exogenous factor, we argue that technological innovation can better be understood as an endogenous factor. In particular, we develop aco-production frameworkof innovation and the commons that draws attention to the different ways in which innovation, commons and its governance interact. Using this framework, we demonstrate that the constitution of potato genetic resources as a commons cannot be understood without considering the various ways in which technological innovation affects resources and mediate how these are governed. While reversely, technological innovations themselves are also enabled and constrained by users who govern potato genetic resources as a shared resource. We argue that changes in the governance of genetic resources can be understood as a change from one socio-technical constellation to another, whereby innovations, resources, and institutions are continuously co-produced. (shrink)

Dixon et al. overlook the fact that contact predicts not only favorable out-group attitudes/evaluations, but also cognitions, affect, and behavior. The weight of evidence supporting the benefits of intergroup contact cautions against throwing the (contact) baby out with the bathwater. The goal to “ignite struggles” in pursuit of social equality, we argue, incautiously risks hurling us down the proverbial rabbit hole.

Many languages offer a surprisingly complex range of options for referring to entities using expressions whose main descriptive content is contributed by an adjective, such as Dutch de blinde ‘the blind,’ het besprokene, ‘the discussed,’ or het ongewone van het niet roken ‘the strange about not smoking.’ In this paper, we present a case study of the syntax and compositional semantics of three such constructions in Dutch, one of which we argue has not previously been identified in the literature. The (...) data and the analysis will shed light on our understanding of how reference using adjectives differs from that using nouns in languages that have the two categories, as well as on the differences between reference to entities via their properties vs. reference to properties themselves. Finally, we briefly discuss related work and indicate directions for future study of the typological variation found in this rich and highly understudied corner of natural language. (shrink)

Natural languages make prolific use of conventional constituent‐ordering patterns to indicate “who did what to whom,” yet the mechanisms through which these regularities arise are not well understood. A series of recent experiments demonstrates that, when prompted to express meanings through silent gesture, people bypass native language conventions, revealing apparent biases underpinning word order usage, based on the semantic properties of the information to be conveyed. We extend the scope of these studies by focusing, experimentally and computationally, on the interpretation (...) of silent gesture. We show cross‐linguistic experimental evidence that people use variability in constituent order as a cue to obtain different interpretations. To illuminate the computational principles that govern interpretation of non‐conventional communication, we derive a Bayesian model of interpretation via biased inductive inference and estimate these biases from the experimental data. Our analyses suggest people's interpretations balance the ambiguity that is characteristic of emerging language systems, with ordering preferences that are skewed and asymmetric, but defeasible. (shrink)

Natural languages make prolific use of conventional constituent‐ordering patterns to indicate “who did what to whom,” yet the mechanisms through which these regularities arise are not well understood. A series of recent experiments demonstrates that, when prompted to express meanings through silent gesture, people bypass native language conventions, revealing apparent biases underpinning word order usage, based on the semantic properties of the information to be conveyed. We extend the scope of these studies by focusing, experimentally and computationally, on the interpretation (...) of silent gesture. We show cross‐linguistic experimental evidence that people use variability in constituent order as a cue to obtain different interpretations. To illuminate the computational principles that govern interpretation of non‐conventional communication, we derive a Bayesian model of interpretation via biased inductive inference and estimate these biases from the experimental data. Our analyses suggest people's interpretations balance the ambiguity that is characteristic of emerging language systems, with ordering preferences that are skewed and asymmetric, but defeasible. (shrink)

This paper addresses the two interpretations that a combination ofnegative indefinites can get in concord languages like French:a concord reading, which amounts to a single negation, and a doublenegation reading. We develop an analysis within a polyadic framework,where a sequence of negative indefinites can be interpreted as aniteration of quantifiers or via resumption. The first option leadsto a scopal relation, interpreted as double negation. The secondoption leads to the construction of a polyadic negative quantifiercorresponding to the concord reading. Given that (...) sentential negationparticipates in negative concord, we develop an extension of thepolyadic approach which can deal with non-variable binding operators,treating the contribution of negation in a concord context assemantically empty. Our semantic analysis, incorporated into agrammatical analysis formulated in HPSG, crucially relies on theassumption that quantifiers can be combined in more than one wayupon retrieval from the quantifier store. We also considercross-linguistic variation regarding the participation ofsentential negation in negative concord. (shrink)

This article proposes a 'fusion of horizons' in constructing urban public theologies in South Africa. This is done through the introduction of five interrelated themes that have emerged from the on-going knowledge and idea production by a distinguishable counterpoint in contemporary scholarly, intellectual and activist engagement with the urban, in the authors' own South African context but also wider internationally. In advancing a praxis-agenda for urban public theology, the authors subsequently identify the following, albeit not exhaustive, themes: southern urbanisms and (...) the factor of unprecedented urban migration; 'right to the city' and urbanisation from below; a reclaiming of the commons; the making of 'good cities'; and actors of faith in relation to urban social life. (shrink)

Scholarship on Pentecostal potential and practice forms a significant part of the debate on religion and development, not least when the focus is on sub-Saharan Africa. Yet in this debate African Pentecostal migrant communities have scarcely been represented. The article focuses on two such communities in South Africa, arguing that they may be regarded as developmental agents in the context of racialized xenophobia, even if they do not portray themselves as such. The argument is based on ethnographic fieldwork and shaped (...) through employing the concept of transformational development that centers on restoring relationships. The article concludes that the two communities – living in a context affected by racialized xenophobia – contribute meaningfully towards restoring relationships between people and God, one's relationship with oneself, relationships within the church community as well as relationships between the church community and the neighborhood. (shrink)

Environmental ethics has to deal with the challenge of reconciling contrasting ecocentric and animal-centric perspectives. Two classic attempts at this reconciliation, which both adopted the metaphor of concentric circles, are discussed. It is concluded that the relationship between the animal and its environment, whether the latter is human or natural, should be a pivotal element of such reconciliation. An alternative approach is presented, inspired by care ethics, which proposes that caring for wild animals implies caring for their relationship to the (...) natural environment and thus taking action to maintain wildlife habitat. This type of care is labelled non-specific care because it is not directed towards the individual wild animal and its specific individual needs. In contrast, caring for domestic animals is called specific care because it is much more directed towards the individual animal's needs. (shrink)

This article proceeded from the assumption that the theme of service delivery in present-day South Africa could well be qualified by the notion of 'crisis', to the extent that this qualification, from a theological perspective and on the basis of comparative social analysis, well recalls the statements in such critical and profound theological documents as The Kairos Document and Evangelical Witness in South Africa on the 'crisis' in the latter years of apartheid. The further recognition that the theme of service (...) delivery constitutes an essentially new focus for practical-theological scholarship in South Africa led the author, who has a pertinent interest in the field of Christian diaconia, to thereupon go the full circle of practical-theological interpretation in developing such a focus. This was done by, firstly, attempting to develop a deeper contextual understanding of the problem of service delivery in the country on the basis of the prevailing debate on service delivery in South Africa, after which the ideas from conceptualisations of two different modes of diaconal practice within contexts of endemic poverty in the practical-theological literature were explored. The discussion concluded with a more pertinent consideration of the extent to which these two conceptualisations could be taken as providing direction in conceptualising a transformational diaconal response to the current service-delivery problem. (shrink)

Having studied mathematics, in particular foundations and philosophy of mathematics, it happened that I was asked to teach logic to the students in the Faculty of Philosophy of the Radboud University Nijmegen. It was there that I discovered that logic is much more than just a mathematical discipline consisting of definitions, theorems and proofs, and that logic can and should be embedded in a philosophical context. After ten years of teaching logic at the Faculty of Philosophy at the Radboud University (...) Nijmegen, thirty years at the Faculty of Philosophy of Tilburg University and nine years at the Faculty of Philosophy of the Erasmus University Rotterdam, I got many ideas how to improve my LOGIC book which was published twenty five years ago in 1993 by Verlag Peter Lang. Although the amount of work was enormous, I felt I should do it. It is like working on a large painting where you put some extra color in one corner, add a little detail at another place, shed some more light on a particular face, etc. (shrink)

We introduce an implication-with-possible-exceptions and define validity of rules-with-possible-exceptions by means of the topological notion of a full subset. Our implication-with-possible-exceptions characterises the preferential consequence relation as axiomatized by Kraus, Lehmann and Magidor [Kraus, Lehmann, and Magidor, 1990]. The resulting inference relation is non-monotonic. On the other hand, modus ponens and the rule of monotony, as well as all other laws of classical propositional logic, are valid-up-to-possible exceptions. As a consequence, the rules of classical propositional logic do not determine the (...) meaning of deducibility and inference as implication-without-exceptions. (shrink)

Most discussions on animal experimentation refer to domesticated animals and regulations are tailored to this class of animals. However, wild animals are also used for research, e.g., in biological field research that is often directed to fundamental ecological-evolutionary questions or to conservation goals. There are several differences between domesticated and wild animals that are relevant for evaluation of the acceptability of animal experiments. Biological features of wild animals are often more critical as compared with domesticated animals because of their survival (...) effects. An important issue is what is called here ``natural suffering'''': the suffering from natural circumstances. Should this type of suffering be taken into account when suffering from experimentation is evaluated? As an answer, it is suggested that ``natural functioning'''' should be considered as an additional standard in the evaluation of wild animal experimentation. Finally, two topics related to the ecological context are considered. Firstly, the often inevitable involvement of non-research animals in wild animal experimentation, and secondly, the eco-centric approach to nature conservation. According to the latter position, animals are subordinated to ecosystems. All these aspects make the evaluation of wild animal experiments much more complex than experiments with domesticated animals. Preliminary scores are proposed to deal with these aspects. It is argued that this should not lead to a more complex governmental regulation, since an effective maintenance and control are hard to realize and one may loose the cooperation of researchers themselves. In addition, non-governmental professional organizations such as research societies and funding organizations play a pivotal role. (shrink)

Depending on what one means by the main connective of logic, the -if..., then... -, several systems of logic result: classic and modal logics, intuitionistic logic or relevance logic. This book presents the underlying ideas, the syntax and the semantics of these logics. Soundness and completeness are shown constructively and in a uniform way. Attention is paid to the interdisciplinary role of logic: its embedding in the foundations of mathematics and its intimate connection with philosophy, in particular the philosophy of (...) language. Set theory is presented both as a conditio sine qua non for logic and as a interesting exact ontology. The study of infinite sets yields perplexing results. Formalization of informal number theory results in formal number theory; Godel's incompleteness is treated. At appropriate places attention is paid to paradoxes, intuitionism, conditionals, the historical development of logic, to logic programming and automated theorem proving for classical logic.". (shrink)

This paper addresses the two interpretations that a combination ofnegative indefinites can get in concord languages like French:a concord reading, which amounts to a single negation, and a doublenegation reading. We develop an analysis within a polyadic framework,where a sequence of negative indefinites can be interpreted as aniteration of quantifiers or via resumption. The first option leadsto a scopal relation, interpreted as double negation. The secondoption leads to the construction of a polyadic negative quantifiercorresponding to the concord reading. Given that (...) sentential negationparticipates in negative concord, we develop an extension of thepolyadic approach which can deal with non-variable binding operators,treating the contribution of negation in a concord context assemantically empty. Our semantic analysis, incorporated into agrammatical analysis formulated in HPSG, crucially relies on theassumption that quantifiers can be combined in more than one wayupon retrieval from the quantifier store. We also considercross-linguistic variation regarding the participation ofsentential negation in negative concord. (shrink)

Although there is little empirical doubt of the cerebral base of consciousness, it still has an unapproachable quality about it. Gerald Edelman and Giulio Tononi offer a hypothesis that should give us the tool to start disentangling the 'world knot', an image Arthur Schopenhauer used to describe the problem of the origin of consciousness. Their primary focus is not the richness in everyday experience, but the conditions that allow us that experiential richness -- a difficult enough task, as most would (...) admit reading the book. It shows how the cranial barrier can be overcome by new observation techniques, producing a plethora of experimental data in support of the concepts and theories described in the book. This material leads to the formulation of the dynamic-core hypothesis which describes the necessary biological conditions for consciousness. (shrink)