Das Wiskott-Aldrich-Syndrom (WAS), ein genetisch bedingter Immundefekt mit klinischer Manifestation im Kleinkindalter, wird voraussichtlich in näherer Zukunft erstmals versuchsweise durch eine somatische Gentherapie behandelt werden. Im vor- liegenden Beitrag werden die wichtigsten medizinisch-naturwissenschaftlichen Fakten dieses Krankheitsbildes sowie die bisherigen Erfahrungen mit somatischen Gentherapien bei anderen Immunmangelsyndromen ausführlich dargestellt. Sodann erfolgt eine ethische Analyse eines möglichen gentherapeutischen Eingriffs bei WAS-Patienten, bei der die spezifischen Aspekte des Wiskott-Aldrich-Syndroms – insbesondere die fast ausschließliche Betroffenheit von Kindern sowie die unterschiedlich aussichtsreiche Alter- nativoption einer (...) allogenen Knochenmarktransplantation–wesentliche Aspekte der Beurteilung sind. Im Ergebnis zeigt sich, dass ein gentherapeutischer Eingriff im vorliegenden Fall nicht im Rahmen einer Forschungsstudie, d.h. als Humanexperiment, gerechtfertigt werden kann, sondern allein als individueller Heilversuch. Gleichwohl las- sen die besonderen Risiken und die Innovativität eines solchen Eingriffs es notwendig erscheinen, diesen Heilversuch – anders als andere Heilbehandlungen mit bislang unerprobten Mitteln – in streng kontrollierter Form durchzuführen. Der neuartige Gedanke eines kontrollierten individuellen Heilversuchs zeichnet sich daher für den vorliegenden Fall, und womöglich auch für vergleichbare risikoreiche Behandlungsansätze namentlich im Bereich der Gentherapie, als geeignetes Instrument der Konzeption und Beurteilung ab. (shrink)

Abstract of of the anthology: Digitalisation encompasses all areas of life and is thus also relevant for theology and the Church. This is not just about the possible uses of social media; in this anthology, digitalisation is understood as a phenomenon that shapes society, the Church and theology with the help of various technologies, such as artificial intelligence. In this context, theology and the Church represent places of digitalisation on the one hand, and, at the same time, the discourse on (...) digitalisation can be advanced with the help of theological thinking on the other. This anthology is both theologically ecumenical and is anchored in an international context. The editors' research focus is on ethics. -/- With contributions by: Aaron J. Butler, Heide A. Campbell, Michael Fuchs, Stephen Garner, David J. Gunkel, Florian Höhne, Markus Huppenbauer, Peter G. Kirchschläger, Birte Platow, Raphael Salvi, Thomas Schlag, Peter Seele, Gotlind Ulshöfer, Joachim Wiemeyer and Lukas Zapf. (shrink)

This article offers a novel, conservative account of material constitution, one that incorporates sortal essentialism and features a theory of dominant sortals. It avoids coinciding objects, temporal parts, relativizations of identity, mereological essentialism, anti-essentialism, denials of the reality of the objects of our ordinary ontology, and other departures from the metaphysic implicit in ordinary ways of thinking. Defenses of the account against important objections are found in Burke 1997, 2003, and 2004, as well as in the often neglected six paragraphs (...) that conclude section V of this article. (shrink)

This paper defends a theory of hope according to which hopes are composed of a desire and a belief that the object of the desire is possible. Although belief plus desire theories of hope are now widely rejected, this is due to important oversights. One is a failure to recognize the relation that hope-constituting desires and beliefs must stand in to constitute a hope. A second is an oversimplification of the explanatory power of hope-constituting desires. The final portion of the (...) paper uses an enhanced understanding of the psychology of hope to make progress on normative questions about hoping well. (shrink)

Philosophers often claim that studying philosophy helps people to become better thinkers. Thanks to a grant from the American Philosophical Association, we were able to test this claim empirically, using a large sample of students (N = 122,352) graduating from 369 colleges and universities across the United States between 2010 and 2019. We investigated whether philosophy majors show more growth than non-philosophy majors in intellectual traits like open-mindedness and a tendency to think carefully and thoroughly, as well as more personal (...) forms of growth that might be fostered by philosophical study (e.g., self-understanding). Additionally, although this was not our primary question, we sought to better understand what students who major in philosophy are like. Specifically, we examined the demographics of philosophy majors, the other subjects that they tend to study when they double major, and the patterns of adding and dropping of philosophy majors between freshman and senior year. (shrink)

This paper discusses operationalization of open educational practices (OEP) using innovative, Internet-influenced pedagogies to expose dangers of post-truth narratives. The first part reviews interpretations of OEP (associated with open-access and tools, collaboration, problem-centered learning, and democratic pedagogy) and explores possibilities for creating educational initiatives where students learn to create problem-solving communities mirroring an informationally healthy society. The second part suggests our society has reached a post-truth crossroads. Post-truth was initially discussed in the 1990s—a reification of critical theorists’ pessimism of social (...) structures, controlling narratives and ways members react to critical events, whether through obedience to institutional authority or support for destructive adventurism, creating situations producing cybernetic double binds. The third part contextualizes OEP as ecologically grounded pedagogies through an open source educational processes framework focusing on productive many-to-many online communication and community formation, offering practical examples of open source educational processes curricula implemented in a higher education setting. (shrink)

The distinction between the essential and the accidental characteristics of a thing should be understood not in modal terms (the received view) nor in definitional terms (Fine’s recent proposal) but as follows: an essential characteristic of a thing is one that is not explained by any other of that thing’s characteristics, and an accidental characteristic of a thing is one that is so explained. Various versions of this proposal can be formulated.

This paper, while neutral on questions about the minimality of truth, argues for the non-minimality of truth-aptness.

nated discussion of the semantics of such verbs. I will call this view.

This paper is about the so-called meta-grounding question, i.e. the question of what grounds grounding facts of the sort ‘φ is grounded in Γ ’. An answer to this question is pressing since some plausible assumptions about grounding and fundamentality entail that grounding facts must be grounded. There are three different accounts on the market which each answer the meta-grounding question differently: Bennett’s and deRosset’s “Straight Forward Account” (SFA), Litland’s “Zero-Grounding Account” (ZGA), and “Grounding Essentialism” (GE). I argue that if (...) grounding is to be regarded as metaphysical explanation (i.e. if unionism is true), (GE) is to be preferred over (ZGA) and (SFA) as only (GE) is compatible with a crucial consequence of the thought that grounding is metaphysical explanation. In this manner the paper contributes not only to discussions about the ground of ground but also to the ongoing debate concerning the relationship between ground, essence, and explanation. (shrink)

The physicalist credo is that the world is physical. But some phenomena, such as minds, morals, and mathematics, appear to be nonphysical. While an uncompromising physicalism would reject these, a conciliatory physicalism needn’t if it can account for them in terms of an underlying physical basis. Any such account must refer to the nonphysical. But won’t this unavoidable reference to the nonphysical conflict with the physicalist credo? This essay aims to clarify this problem and introduce a novel solution that relies (...) on a distinction between “circumstantial” facts that are based in the circumstances and “acircumstantial” facts that are not. This is used in two ways. First, physicalism is restricted to circumstantial facts: only they must have a physical basis that does not refer to the nonphysical. Second, facts accounting for the nonphysical are not restricted to the circumstantial: they may refer to the nonphysical if they are acircumstantial. Facts about how the physical accounts for the nonphysical therefore do not conflict with the physicalist’s credo. This provides a credible answer to what physicalism could be. (shrink)

Are thought experiments nothing but arguments? I argue that it is not possible to make sense of the historical trajectory of certain thought experiments if one takes them to be arguments. Einstein and Bohr disagreed about the outcome of the clock-in-the-box thought experiment, and so they reconstructed it using different arguments. This is to be expected whenever scientists disagree about a thought experiment's outcome. Since any such episode consists of two arguments but just one thought experiment, the thought experiment cannot (...) be the arguments. (shrink)

Etic theorizing uses the theorist’s social notions to theorize about their subject. This theorist may claim that Genghis Khan was a war criminal even though his actions predate the enactment of the Geneva Conventions. Brian Epstein considers a modal etic theorist who claims that Genghis Khan would have been a war criminal even if the Geneva Conventions were never enacted. Epstein argues that this has metaphysical import: it requires postulating a novel metaphysical notion of “anchoring.” Drawing from some familiar issues (...) in modal actualism, I argue that modal etic theorizing does not support this postulate. But it does suggest a distinctive kind of modality at work in social reality. (shrink)

It is often thought that metaphysical grounding underwrites a distinctive sort of metaphysical explanation. However, it would be a mistake to think that all metaphysical explanations are underwritten by metaphysical grounding. In service of this claim, I offer a novel kind of metaphysical explanation called metaphysical explanation by constraint, examples of which have been neglected in the literature. I argue that metaphysical explanations by constraint are not well understood as grounding explanations.

Religious fictionalism is the theory that it is morally and intellectually legitimate to affirm religious sentences and to engage in public and private religious practices, without believing the content of religious claims. This article discusses the main features of fictionalism, contrasts hermeneutic, and revolutionary kinds of fictionalism and explores possible historical and recent examples of religious fictionalism. Such examples are found in recent theories of faith, pragmatic approaches to religion, and mystical traditions in religious theology.

According to many philosophers, "the meaning of life" refers to our cosmic purpose, the activity that we were created by God or a purposive universe to perform. If there is no God or teleology, there is no such thing as the meaning of life. But this need not be the last word on the matter. In this paper, I ask what the benefits provided by a cosmic purpose are, and go on to argue that thinking of our lives in a (...) particular way—in terms of a unified life narrative—can supply us with many of those benefits. We might lose little if there is no such thing as the meaning of life, since there is still something that can provide much of what is valuable about it. (shrink)

This paper examines two major challenges to epistemic theories of democracy: the “authority dilemma” and the “epistemic gamble.” The first is a conceptual challenge, suggesting that epistemic democracy is inherently self-undermining. The second is a normative challenge, asserting that the case for democracy should not rely on precarious epistemic grounds. I argue that both challenges fail, demonstrating that epistemic theories of democracy withstand these two prominent objections.

This is the introduction to the Routledge Companion to Thought Experiments.

A modern and influential Aristotelian conception of universals combines two ideas: that a universal is immanent in its instantiations, and that its instantiations are partly constructed by this universal. I argue that these two ideas are inconsistent on weaker assumptions than previously recognized.

: The debate between proponents of ideal and non-ideal approaches to political philosophy has thus far been framed as a meta-level debate about normative theory. The argument of this essay will be that the ideal/non-ideal debate can be helpfully reframed as a ground-level debate within normative theory. Specifically, it can be understood as a debate within the applied normative field of professional ethics, with the profession being examined that of political philosophy itself. If the community of academic political theorists and (...) philosophers cannot help us navigate the problems we face in actual political life, they have not lived up to the moral demands of their vocation. A moderate form of what David Estlund decries as “utopophobia” is therefore an integral element of a proper professional ethic for political philosophers. The moderate utopophobe maintains that while devoting scarce time and resources to constructing utopias may sometimes be justifiable, it is never self-justifying. Utopianism is defensible only insofar as it can reasonably be expected to help inform or improve nonutopian political thinking. (shrink)

Since Case and Deaton (2015) coined the term ‘deaths of despair,’ there has been significant empirical work and public interest in the topic. Yet social scientists studying this topic lament the absence of a clear theory of despair. Philosophical inquiry into the nature and value of hope has begun to fill this gap, with despair often cited as the opposite of hope. The assumption that hope and despair are opposites has helped to motivate two central tasks in the literature: how (...) a theory of hope can make sense of the difference between hope and despair, and how hope might prevent people from falling into despair. Yet the focus of inquiry has been principally on hope. This paper builds on the existing literature to offer a theory of despair. We argue that despair is a mode of sadness whereby one experiences the loss of reasons to take seriously that which one desires. Our account of despair captures a set of desiderata that any theory of despair should explain, and it offers useful conceptual resources to social scientists studying deaths of despair. (shrink)

Many economists and social theorists hypothesize that most societies could soon face a ‘post-work’ future, one in which employment and productive labor have a dramatically reduced place in human affairs. Given the centrality of employment to individual identity and its pivotal role as the primary provider of economic and other goods, transitioning to a ‘post-work’ future could prove traumatic and disorienting to many. Policymakers are thus likely to face the difficult choice of the extent to which they ought to satisfy (...) individual citizens’ desires to work in a socioeconomic environment in which work is in permanent decline. Here I argue that policymakers confronting a post-work economy should discount, or at least consider problematic, the desire to work because it is very likely that this desire is an adaptive preference. An adaptive preference is a preference for some state of affairs within a limited set of options formed under unjust conditions. The widespread desire for work has been formed under unjust labor conditions to which individuals are compelled to submit in order to meet material and ethical needs. Furthermore, the prevalence of the ‘work dogma’ in contemporary societies precludes nearly all individuals from seeing alternatives to work as live options. (shrink)

An analogue of Arrow’s theorem has been thought to limit the possibilities for multi-criterial theory choice. Here, an example drawn from Toy Science, a model of theories and choice criteria, suggests that it does not. Arrow’s assumption that domains are unrestricted is inappropriate in connection with theory choice in Toy Science. There are, however, variants of Arrow’s theorem that do not require an unrestricted domain. They require instead that domains are, in a technical sense, ‘rich’. Since there are rich domains (...) in Toy Science, such theorems do constrain theory choice to some extent—certainly in the model and perhaps also in real science. (shrink)

People attribute purposes in both mundane and profound ways—such as when thinking about the purpose of a knife and the purpose of a life. In three studies (total N = 13,720 observations from N = 3,430 participants), we tested whether these seemingly very different forms of purpose attributions might actually involve the same cognitive processes. We examined the impacts of four factors on purpose attributions in six domains (artifacts, social institutions, animals, body parts, sacred objects, and human lives). Study 1 (...) manipulated what items in each domain were originally created for (original design) and how people currently use them (present practice). Study 2 manipulated whether items are good at achieving a goal (effectiveness) and whether the goal itself is good (morality). We found effects of each factor in every domain. However, whereas morality and effectiveness had remarkably similar effects across domains, the effects of original design and present practice differed substantially. Finally, Study 3 revealed that, within domains, the effects of original design and present practice depend on which entities design and use items. These results reveal striking similarities in purpose attributions across domains and suggest that certain entities are treated as authorities over the purposes of particular items. (shrink)

Perceptualism is a prominent theory analyzing emotions as perceptual experiences of value. A longstanding challenge to perceptualism says that emotions cannot be perceptual because they are subject to normative assessments in terms of reasons and rationality while perceptual experiences are not. I defend perceptualism from this charge. My argument begins by distinguishing two forms of normative assessment: fundamental and non-fundamental. Perceptualism is compatible with the latter (i.e., non-fundamental reasons and rationality); even sensory experiences are so assessable. I next argue that (...) emotions are only non-fundamentally assessable. Following this argument, I outline a perceptualist-friendly theory of emotions as non-fundamentally normatively assessable. (shrink)

This paper explores the relationship between romantic love and polyamory. Our central question is whether traditional norms of monogamy can be excised from romantic love so as to harmonize with polyamory’s ethical dimensions (as we construe them). How one answers this question bears on another: whether ‘polyamory’ should principally be understood in terms of romantic love or instead some alternative conception(s). Our efforts to address these questions begin by briefly motivating our favored approach to romantic love, a “narratival” one inspired (...) by 1930s cultural theorist Denis de Rougemont, wherein such love is exclusive, supernatural or promising transcendence, painful, impeded, and, ultimately, fatal. We maintain that, even once exclusivity is removed as an official component, tensions with polyamory’s ethical dimensions remain: romantic love’s other elements rationalize acting and feeling in ways that privilege a singular beloved above others. A tempting solution is to further revise romantic love. However, we are skeptical that this leaves space for distinctively romantic love. Our tentative proposal, then, is that polyamory’s ethical dimensions favor rejecting romantic love as ultimately desirable. (shrink)

Previous claims to have resolved the two-envelope paradox have been premature. The paradoxical argument has been exposed as manifestly fallacious if there is an upper limit to the amount of money that may be put in an envelope; but the paradoxical cases which can be described if this limitation is removed do not involve mathematical error, nor can they be explained away in terms of the strangeness of infinity. Only by taking account of the partial sums of the infinite series (...) of expected gains can the paradox be resolved. (shrink)

In my 1991 paper, AAnti-Individualism and Privileged Access,@ I argued that externalism in the philosophy of mind is incompatible with the thesis that we have privileged , nonempirical access to the contents of our own thoughts.¹ One of the most interesting responses to my argument has been that of Martin Davies (1998, 2000, and Chapter _ above) and Crispin Wright (2000 and Chapter _ above), who describe several types of cases to show that warrant for a premise does not always (...) transmit to a known deductive consequence of that premise, and who contend that this fact under-mines my argument for incompatibilism. I will try to show here that the Davies/Wright point about transmission of warrant does not adversely affect my argument. (shrink)

In this article I argue that while an attachment to one's country is both natural and even partially justifiable, cultivating loyal patriotism in schools is untenable insofar as it conflicts with the legitimate aims of education. These aims include the epistemological competence necessary for ascertaining important truths germane to the various disciplines; the cultivation of critical thinking skills ; and developing the capacity for economic self‐reliance. I argue that loyal patriotism may result in a myopic understanding of history, an unhealthy (...) attitude of superiority relative to other cultures, and a coerced sense of attachment to one's homeland. (shrink)

It is almost universally presumed that knowledge is factive: in order to know that p it must be the case that p is true. This idea is often justified by appealing to knowledge ascriptions and related linguistic phenomena; i.e., an utterance of the form ‘S knows that p, but not-p’ sounds contradictory. In a recent article, Allan Hazlett argues that our ordinary concept of knowledge is not factive. From this it seems to follow that epistemologists cannot appeal to ordinary language (...) to justify the truth condition of knowledge. More significantly, Hazlett claims that epistemologists theorizing about knowledge should not concern themselves with the ordinary concept of knowledge as revealed by knowledge ascriptions and related linguistic phenomena. My paper has two goals: first, to defend the orthodox view that the ordinary concept of knowledge is factive; second, to undermine Hazlett’s claim that epistemologists should not theorize about knowledge on the basis of how ‘knows’ is used in everyday speech. (shrink)

The flight to reference is a widely-used strategy for resolving philosophical issues. The three steps in a flight to reference argument are: (1) offer a substantive account of the reference relation, (2) argue that a particular expression refers (or does not refer), and (3) draw a philosophical conclusion about something other than reference, like truth or ontology. It is our contention that whenever the flight to reference strategy is invoked, there is a crucial step that is left undefended, and that (...) without a defense of this step, the flight to reference is a fatally flawed strategy; it cannot succeed in resolving philosophical issues. In this paper we begin by setting out the flight to reference strategy and explaining what is wrong with arguments that invoke the strategy. We then illustrate the problem by considering arguments for and against eliminative materialism. In the final section we argue that much the same problem undermines Philip Kitcher's attempt to defend scientific realism. (shrink)

I attempt to present an argument to suggest how the empirical framework and effective philosophies of science and metaphysics in particular can be practiced to bring out the best in both enterprises. I propose that there exists a natural marriage between these disciplines that can be complimentary. A particular focus is upon the role of metaphysical speculation in providing frameworks that may guide scientific studies, suggest areas of scientific research, search for connections between the realms of logic, mathematics, and empirical (...) discoveries within numerous disciplines of science. Some attention is upon how metaphysical speculation remains indispensable to the foundations of many empirical endeavors, but if not carefully examined it may inadvertently block scientific discovery and advancements that it should facilitate. (shrink)

1. The primary evidence and motivation for externalism in the philosophy of mind is provided by the semantic facts that support direct reference theories of names, indexi- cal pronouns, and natural kind terms. But many externalists have forgotten their sem- antic roots, or so I shall contend here. I have become convinced of this by a common reaction among externalists to the main argument of my 1991 paper AAnti-Individual- ism and Privileged Access.@ In that argument, I concluded that externalism is (...) incompat- ible with the principle that we can have privileged, non-empirical knowledge of the contents of our own thoughts. The reaction in question amounts to a dismissive denial of one of my argument=s main premises. This premise, which I defended at length in the paper, is that an externalist thesis regarding a cognitive property should hold that possession of the property by a person _logically_, or _conceptually_, implies the existence of objects external to that person. (shrink)

John Rawls shares the Enlightenment's commitment to finding moral and political principles which can be reflectively endorsed by all individuals autonomously. He usually presents reflective autonomy in Kantian, rationalist terms: autonomy is identified with the exercise of reason, and principles of justice must be constructed which are acceptable to all on the basis of reason alone. Yet David Hume, Adam Smith and many other Enlightenment thinkers rejected such rationalism, searching instead for principles which can be endorsed by all on the (...) basis of all the faculties of the human psyche, emotion and imagination included. The influence of these sentimentalists on Rawls is clearest in his descriptive moral psychology, but I argue that it is also present in Rawls's understanding of the sources of normativity. Although this debt is obscured by Rawls's explicit "Kantianism," his theory would be strengthened by a greater understanding of its debts to the sentimentalist Enlightenment. (shrink)

Our aim in this paper is to bring the woefully neglected literature on predictive modeling to bear on some central questions in the philosophy of science. The lesson of this literature is straightforward: For a very wide range of prediction problems, statistical prediction rules (SPRs), often rules that are very easy to implement, make predictions than are as reliable as, and typically more reliable than, human experts. We will argue that the success of SPRs forces us to reconsider our views (...) about what is involved in understanding, explanation, good reasoning, and about how we ought to do philosophy of science. (shrink)

I make what I believe is a spirited and lively treatment for the necessary abandonment of scientific materialist ontology in light of numerous difficulties that have arisen within the materialist approach when examined in the light of contemporary physics. Every effort is made to ensure that it is aimed at a non-specialized, intelligent audience (except for this abstract). Within this approach every attempt is made to avoid the jargon employed by specialists, which still remaining accurate. I make a case for (...) the abandonment of materialism in favor of a specific brand of idealism that fits with what cutting edge science requires at its epistemological foundation, but does not lead to disqualifying shortcomings that occasionally accompany some idealist prescriptions. I move from the suggested idealist remedy to how this idealism may mitigate aspects of the arrow of time dilemma. I also suggest this its employment in conjunction with holographic modeling may be especially efficacious in the contemporary scientific endeavor. (shrink)

I make a sustained case against the scientific dependence upon materialist metaphysics. Difficulties in the materialist approach have grown, especially at the quantum level, and have reached a point that science should abandon this approach for an idealist perspective first advanced by Bernardo Kastrup, which is briefly detailed and expanded upon within this treatment. It treats the arrow of time dilemma in some detail. It further suggests this specific brand of idealism in conjunction with a holographic interface may mitigate many (...) shortcomings of the scientific enterprise. (shrink)

This paper explores two related questions in late Athenian and Alexandrian Neoplatonism. First, how can a philosopher contemplate the eternal Forms while engaging in practical agency in the world? Second, do Neoplatonists provide a consistent account of the philosopher’s progress through the ‘stages of virtue’ (βαθμοί τῶν ἀρετῶν), the conceptual structure that underpins late antique philosophical curricula and hagiography? These questions interact, I suggest, because later Platonists appeal to the stages of virtue and divine maniai (βαθμοί τῶν μανίων) to explain (...) the philosopher’s ability to alternate gracefully between contemplation and embodied agency, and even to engage in both activities at the same moment. I argue that apparently contradictory evidence for the highest stages of virtue can be reconciled satisfactorily, shedding light on two models of ethical and perceptual transformation that are consistent throughout later Neoplatonism. In the first, 'painterly' model, we alternate between a vision of the paradigmatic model and its expression in the media of place and time; in the second, 'dancerly' model, we contemplate in action all at once, like a dancer moving to the music. (shrink)

-- Immanuel Kant (Kant 1990, p. 46/429) The idea that our most basic duty is to treat each other with respect is one of the Enlightenment’s greatest legacies and Kant is often thought to be one of its most powerful defenders. If Kant’s project were successful then the lofty notion that humanity is always worthy of respect would be vindicated by pure practical reason. Further, this way of defending the ideal is supposed to reflect our autonomy, insofar as it is (...) always one’s own reason that demands that one treat humanity with respect. In this article, I consider what I take to be one of the most important and compelling attempts to defend the Kantian project. I draw the disappointing conclusion that this attempt does not succeed. The reasons this attempt fails shed some light on the difficulties facing any attempt to defend the Kantian project. (shrink)

Is knowledge a uniform kind? If not, what relation do the different kinds of knowledge bear to one another? Is there a central notion of knowledge which other kinds of knowledge must be understood in terms of? In this paper, I use Aristotle’s theory of homonyms as a framework to make progress on these questions. I argue that knowledge is not a uniform kind but rather a core-dependent homonym. To demonstrate this, I focus on knowledge by acquaintance. I argue that (...) the principles that govern propositional knowledge cannot govern knowledge by acquaintance. I then develop analogue principles for knowledge by acquaintance and show why, despite their different modal profiles, knowledge by acquaintance is nevertheless a form of knowledge. I then show that the analysis of propositional knowledge fundamentally depends on knowledge by acquaintance. (shrink)

Juries, committees and experts panels commonly appraise things of one kind or another on the basis of grades awarded by several people. When everybody's grading thresholds are known to be the same, the results sometimes can be counted on to reflect the graders’ opinion. Otherwise, they often cannot. Under certain conditions, Arrow's ‘impossibility’ theorem entails that judgements reached by aggregating grades do not reliably track any collective sense of better and worse at all. These claims are made by adapting the (...) Arrow–Sen framework for social choice to study grading in groups. (shrink)