Polarization is a topic of intense interest among social scientists, but there is significant disagreement regarding the character of the phenomenon and little understanding of underlying mechanics. A first problem, we argue, is that polarization appears in the literature as not one concept but many. In the first part of the article, we distinguish nine phenomena that may be considered polarization, with suggestions of appropriate measures for each. In the second part of the article, we apply this analysis to evaluate (...) the types of polarization generated by the three major families of computational models proposing specific mechanisms of opinion polarization. (shrink)

Extract from Hofstadter's revew in Bulletin of American Mathematical Society : http://www.ams.org/journals/bull/1980-02-02/S0273-0979-1980-14752-7/S0273-0979-1980-14752-7.pdf -/- "Aaron Sloman is a man who is convinced that most philosophers and many other students of mind are in dire need of being convinced that there has been a revolution in that field happening right under their noses, and that they had better quickly inform themselves. The revolution is called "Artificial Intelligence" (Al)-and Sloman attempts to impart to others the "enlighten- ment" which he clearly regrets not (...) having experienced earlier himself. Being somewhat of a convert, Sloman is a zealous campaigner for his point of view. Now a Reader in Cognitive Science at Sussex, he began his academic career in more orthodox philosophy and, by exposure to linguistics and AI, came to feel that all approaches to mind which ignore AI are missing the boat. I agree with him, and I am glad that he has written this provocative book. The tone of Sloman's book can be gotten across by this quotation (p. 5): "I am prepared to go so far as to say that within a few years, if there remain any philosophers who are not familiar with some of the main developments in artificial intelligence, it will be fair to accuse them of professional incom- petence, and that to teach courses in philosophy of mind, epistemology, aesthetics, philosophy of science, philosophy of language, ethics, metaphysics, and other main areas of philosophy, without discussing the relevant aspects of artificial intelligence will be as irresponsible as giving a degree course in physics which includes no quantum theory." -/- (The author now regrets the extreme polemical tone of the book.). (shrink)

For Émilie Du Châtelet, I argue, a central role of the principle of sufficient reason is to discriminate between better and worse explanations. Her principle of sufficient reason does not play this role for just any conceivable intellect: it specifically enables understanding for minds like ours. She develops this idea in terms of two criteria for the success of our explanations: “understanding how” and “understanding why.” These criteria can respectively be connected to the determinateness and contrastivity of explanations. The crucial (...) role Du Châtelet’s principle of sufficient reason plays in identifying good explanations is often overlooked in the literature, or else run together with questions about the justification and likelihood of explanations. An auxiliary goal of the article is to situate Du Châtelet’s principle of sufficient reason with respect to some of the general epistemological and metaphysical commitments of her Institutions de Physique, clarifying how it fits into the broader project of that work. (shrink)

ABSTRACT This article distinguishes nine senses of polarization and provides formal measures for each one to refine the methodology used to describe polarization in distributions of attitudes. Each distinct concept is explained through a definition, formal measures, examples, and references. We then apply these measures to GSS data regarding political views, opinions on abortion, and religiosity—topics described as revealing social polarization. Previous breakdowns of polarization include domain-specific assumptions and focus on a subset of the distribution’s features. This has conflated multiple, (...) independent features of attitude distributions. The current work aims to extract the distinct senses of polarization and demonstrate that by becoming clearer on these distinctions we can better focus our efforts on substantive issues in social phenomena. (shrink)

The ability to improvise represents one of the highest levels of musical achievement. An improviser must master a musical language to such a degree as to be able to spontaneously invent stylistically idiomatic compositions on the spot. This feat is one of the pinnacles of human creativity, and yet its cognitive basis is poorly understood. What musical knowledge is required for improvisation? How does a musician learn to improvise? What are the neural correlates of improvised performance? In 'The Improvising Mind' (...) these questions are explored through an interdisciplinary approach that draws on cognitive neuroscience, study of historical pedagogical treatises on improvisation, interviews with improvisers, and musical analysis of improvised performances. Findings from these treatises and interviews are discussed from the perspective of cognitive psychological theories of learning, memory, and expertise. Musical improvisation has often been compared to 'speaking a musical language.' While past research has focussed on comparisons of music and language perception, few have dealt with this comparison in the performance domain. In this book, learning to improvise is compared with language acquisition, and improvised performance is compared with spontaneous speech from both theoretical and neurobiological perspectives. (shrink)

I argue that Émilie Du Châtelet breaks with Christian Wolff regarding the scope and epistemological content of the principle of sufficient reason, despite his influence on her basic ontology and their agreement that the principle of sufficient reason has foundational importance. These differences have decisive consequences for the ways in which Du Châtelet and Wolff conceive of science.

Perinatal palliative and hospice care (hereafter, perinatal hospice) is a novel approach to addressing a family’s varied needs following an adverse in utero diagnosis. Christian defenses of perinatal hospice tend to focus on its role as an ethical alternative to abortion. Although these analyses are important, they do not provide adequate grounds to characterize the wide range of goods realized through this compassionate form of care. This essay draws on an analysis of the Christian virtue of humility to highlight the (...) ways a Christian virtue-based defense of perinatal hospice can account for these goods. I argue that humility can play an important facilitating role in helping Christian physicians to meet the needs of families in profoundly difficult circumstances. (shrink)

Online data collection methods are expanding the ease and access of developmental research for researchers and participants alike. While its popularity among developmental scientists has soared during the COVID-19 pandemic, its potential goes beyond just a means for safe, socially distanced data collection. In particular, advances in video conferencing software has enabled researchers to engage in face-to-face interactions with participants from nearly any location at any time. Due to the novelty of these methods, however, many researchers still remain uncertain about (...) the differences in available approaches as well as the validity of online methods more broadly. In this article, we aim to address both issues with a focus on moderated data collected using video-conferencing software. First, we review existing approaches for designing and executing moderated online studies with young children. We also present concrete examples of studies that implemented choice and verbal measures and looking time across both in-person and online moderated data collection methods. Direct comparison of the two methods within each study as well as a meta-analysis of all studies suggest that the results from the two methods are comparable, providing empirical support for the validity of moderated online data collection. Finally, we discuss current limitations of online data collection and possible solutions, as well as its potential to increase the accessibility, diversity, and replicability of developmental science. (shrink)

I present three versions of the argument from divine hiddenness that are grounded in moral considerations regarding how a just deity would act and auxiliary commitments that theists often have. First, I argue that the problem of hiddenness is made worse if one also holds that many will suffer in the afterlife due to not achieving a proper orientation towards God and the demands of morality in this life. Second, I argue that if any version of the moral argument for (...) theism is successful, then God has a very good reason to not remain hidden. Third, I argue that a just God would not allow people to do evil in her name. (shrink)

When performing a skilled action—whether something impressive like a double somersault or something mundane like reaching for a glass of water—you exercise control over your bodily movements. Specifically, you guide their course. In what does that control consist? In this dissertation, I argue that it consists in attending to what you are doing. More specifically, in attending, agents harness their perceptual and perceptuomotor states directly and practically in service of their goals and, in doing so, settle the fine-grained manner in (...) which their bodies will move—details an intention alone leaves unsettled. This requires, among other things, that we reject views on which agents’ control is identical with their practical rationality. When all goes well, agents attentionally prioritize what is motivationally relevant to them to the exclusion of what would otherwise distract them from achieving their goals. However, sometimes agents attend distractedly—i.e., without prioritizing. As the aim of attention is to avoid distraction, this entails the possibility of defective attention. Defective attention, in turn, casts light on scenarios in which agents lose control over what they are doing, as when a skilled practitioner ‘chokes under pressure’. A complaint sometimes levelled against accounts, like mine, that claim to reduce agents’ control of their behaviour to that of causally efficacious mental states or events is that these accounts invariably deprive agents themselves of their rightful role in the generation of behaviour. This is the “Disappearing Agent Problem” for “reductive” or “event-causal” theories of action. I argue that, correctly understood, extant reductive theories do face a genuine Disappearing Agent Problem. However, it is a problem we solve by recognizing the role that conscious attention plays in making an action the agent’s own. Accordingly, I develop and defend an attentional account of action ownership. On this view, allocating conscious attention in service of your goals is sufficient for a kind of conscious perspective (“motivational perspective”), which, when active in controlling your behaviour, constitutes the behaviour as your own doing. As I explain, such perspective also contributes to explaining the subjective structure of your perceptual awareness of the world around you. (shrink)

In this paper, I investigate backward-looking accounts of death's badness. I begin by reviewing deprivationism—the standard, forward-looking account of death's badness. On deprivationism, death is bad for its victims when it deprives them of a good future. This account famously faces two problems—Lucretius’s symmetry problem and the preemption problem. This motivates turning to backward-looking accounts of death's badness on which death is bad for its victim (in a respect) when it involves a decline from a good life. I distinguish three (...) different backward-looking accounts of death's badness in terms of decline, and I argue for the attractiveness of one in particular. I conclude by considering how the backward-looking consideration of decline might factor into our overall account of death's badness. (shrink)

The most interesting and perilous issue at present in comparative religious ethics is comparative ethical judgment—when and how to judge others, if at all. There are understandable historical and conceptual reasons for the current tendency to prefer descriptive over normative work in comparative religious ethics. However, judging those we study is inescapable—it can be suppressed or marginalized but not eliminated. Therefore, the real question is how to judge others (and ourselves) well, not whether to judge. Instead of bringing supposedly universal (...) moral scoring systems to bear on reified "traditions" and "cultures," it would be better to focus on the precise details of particular practices, motifs, and theories in various settings, and compare them with an eye to substantive issues of current ethical concern. (shrink)

Religious healing specialists such as shamans often use magic. Evolutionary theories that seek to explain why laypersons find these specialists convincing focus on the origins of magical cognition and belief in the supernatural. In two studies, we reframe the problem by investigating relationships among ethnomedical specialists, who possess extensive theories of disease that can often appear “supernatural,” and religious healing specialists. In study 1, we coded and analyzed cross-cultural descriptions of ethnomedical specialists in 47 cultures, finding 24% were also religious (...) leaders and 74% used supernatural theories of disease. We identified correlates of the use of supernatural concepts among ethnomedical specialists; incentives and disincentives to patronize ethnomedical specialists; and distinct clusters of ethnomedical specialists that we label prestigious teachers, feared diviners, and efficacious healers. In study 2, we interviewed 84 Maasai pastoralists and their traditional religious and non-religious healing specialists. We found that laypersons relied on medicinal services based on combinations of efficacy, religious identity, and interpersonal trust. Further, laypersons and specialists largely used abstract concepts that were not conspicuously supernatural to describe how local medicines work. We conclude that religious healers in traditional societies often fulfill a practical and specialized service to local clients, and argue that supernatural theories of disease often reflect abstract cognition about rare phenomena whose causes are unobservable (e.g., infection, mental illness) instead of a separate “religious” style of thinking. (shrink)

This dissertation develops the theory of imperfect rationality in the practical and theoretical domains. I characterize imperfect rationality in terms of the quality of reasoning on which an agent's actions and beliefs are based, which I call their rational worth. Perfectly rational actions and beliefs are based on the best reasoning available to the agent: they are based on all the agent's evidence, on an appropriate weighting of all the relevant values, and on the right inductive and deductive principles. Imperfectly (...) rational actions and beliefs are based on good reasoning that falls short of the best reasoning: they are based on a portion of the agent's evidence, on a subset of the relevant values, and on approximate or heuristic reasoning. The idea of rational worth, I argue, helps both to describe and to improve upon the tools that imperfectly rational agents use to think about what to do and what to believe. These tools include a plurality of deliberative questions that imperfectly rational agents use to guide themselves toward better ways of falling short of the ideal of perfect rationality. They also include a practical normative verdict available to agents who can assess a few possible rationales for acting one way or another but who cannot say what an ideal evaluation of all their evidence would support doing. Finally, they include substantive heuristics that result in beliefs and actions that are more, but still not perfectly, rational; for example, I argue that imperfectly rational agents can legitimately engage in a form of hindsight bias as a reasonable second-best strategy. I aim primarily at understanding how imperfectly rational agents can and should cope with their distinctive predicament, but in each case, I also draw lessons for our understanding of the ideal of perfect rationality. (shrink)

In the era of the “Sunnī Revival” and the couple of centuries following, scholars engaged in a large historiographical project aimed at rehabilitating the reputation of the Umayyad dynasty and Syria’s role in the early Islamic narrative. One of Ibn Kathīr’s historiographical missions in his history Kitāb al-Bidāya wa-l-nihāya was specifically the defense of the Companions of the Prophet. As such, the narrative of ʿAlī ibn Abī Ṭālib required some manipulation to answer Shīʿī narratives that cast some of the most (...) important Companions (especially those associated with the Umayyads and Syria) in a rebellious light. This article explores the literary-narrative strategies Ibn Kathīr employs to alter the narrative so as to counteract the implications of the pro-ʿAlīd versions of the story he found in his sources, especially al-Ṭabarī’s Taʾrīkh al-Rusul wa-l-mulūk. (shrink)

Essays on Aesthetic Genesis is a collection of essays written on Jeff Mitscherling s work in realist phenomenology, Aesthetic Genesis: The Origin of Consciousness in the Intentional Being of Nature. The authors explicate, expand, contextualize and apply the concepts of intentional being, the New Copernican Hypothesis, the idea of intentional structures in nature, and the foundational concepts of Aesthetic Genesis as they appear in the work of Aristotle, Ingarden and Gadamer amongst others. This book takes as its focus Mitscherling s (...) comprehensive phenomenological analysis of embodiment, aesthetic experience, the interpretation of texts, moral behavior, and cognition, and exemplifies subsequent work in the field of realist phenomenology being conducted by an international collection of active scholars influenced by Aesthetic Genesis.". (shrink)

According to the presumption of atheism, we are to presume disbelief unless agnosticism or theism can be adequately defended. In this paper I will defend the presumption of atheism against a popular objection made by Thomas Morris and elucidate an insuperable difficulty for any attempt to argue for a presumption of agnosticism.

This paper presents a study of gatekeeping in the U.S. political blog “Daily Kos.” Open online collectives like Daily Kos use relational mechanisms, such as gatekeeping, to manage organizational boundaries and filter the contributions of participants. However, neither prior theories of gatekeeping nor the existing analyses of open online collectives account for the character or implications of gatekeeping in the Daily Kos community. Using qualitative evidence as well as statistical analysis of a large sample of comment threads on the site (...) from 2008, I argue that gatekeeping on Daily Kos takes centralized and decentralized forms, and that both modes depend critically on relational boundary work among site participants. Centralized gatekeeping proceeds through actions by high-status members of the community. Decentralized gatekeeping, by contrast, consists of more numerous and small-scale interactions between community members, who filter and moderate each other’s participation. Both forms of gatekeeping enhance the ability of site leaders and incumbent community members to regulate access to privileges and agenda-setting responsibilities on the site. These findings imply that the egalitarian ethos of open online collectives exists in tension with the mechanisms through which participation and status inequalities emerge among participants. How collectives engaged in mobilization and discursive production resolve this tension will shape the long-term impact of online participation and blogs on the political and public spheres. (shrink)

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be (...) preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant. (shrink)

Norbert M. Samuelson is Harold and Jean Grossman Chair of Jewish Studies at Arizona State University. Trained in analytic philosophy, he has contributed to the professionalization of Jewish philosophy in America and to the field of religion and science.

Glenberg's theory is rich and provocative, in our view, but we find fault with the premise that all memory representations are embodied. We cite instances in which that premise mispredicts empirical results or underestimates human capabilities, and we suggest that the motivation for the embodiment idea – to avoid the symbol-grounding problem – should not, ultimately, constrain psychological theorizing.

Exploramos las tensiones entre narración y materia en la obra de David Lynch. Partiendo de algunas investigaciones recientes -especialmente los trabajos de Català Domènech y Pacôme Thiellement-, proponemos una aproximación al problema de la materia lyncheana que tome como metodología el análisis formal del discurso. Comenzaremos preguntándonos por el uso mismo de la materia que el director aplica en sus creaciones en relación con el aura benjaminiana. En segundo lugar, propondremos un recorrido cronológico que nos permita explorar cómo ha sido (...) la evolución en su manejo de los materiales a partir de tres posibles etapas: el aprendizaje de los códigos artísticos pretéritos -tanto en lo que toca a la herencia de las bellas artes como al reciente pasado cinematográfico-, la paulatina quiebra de los mismos mediante el recurso del video digital o la cita postmoderna, y finalmente, el replanteamiento de sus propias imágenes en un contexto postdigital. (shrink)

Too often the study of philosophical texts is carried out in ways that do not pay significant attention to how the ideas contained within them are presented, articulated, and developed. This was not always the case. The contributors to this collected work consider Jewish philosophy in the medieval period, when new genres and forms of written expression were flourishing in the wake of renewed interest in ancient philosophy. Many medieval Jewish philosophers were highly accomplished poets, for example, and made conscious (...) efforts to write in a poetic style. This volume turns attention to the connections that medieval Jewish thinkers made between the literary, the exegetical, the philosophical, and the mystical to shed light on the creativity and diversity of medieval thought. As they broaden the scope of what counts as medieval Jewish philosophy, the essays collected here consider questions about how an argument is formed, how text is put into the service of philosophy, and the social and intellectual environment in which philosophical texts were produced. (shrink)

During the hundred years following its discovery, Adolph Harnack and, after him, his successors succeeded in giving a determined direction to Didache research. In so doing, the Didache took on a discernible identity and was valued as contributing to the pressing academic discussions of the day. During the last forty years, Harnack and his successors have been largely marginalized. As a result, the field of Didache studies has been caught up in a confusing diversity of scholarly opinions. There is no (...) single origination hypothesis, no single methodology, and no single research program to guide our way. The field of Didache scholarship is thus in disarray and unable to substantially contribute to the academic questions of our day. (shrink)

There is a growing consensus that Emilie Du Châtelet’s challenging essay “On Freedom” defends compatibilism. I offer an alternative, libertarian reading of the essay. I lay out the prima facie textual evidence for such a reading. I also explain how apparently compatibilist remarks in “On Freedom” can be read as aspects of a sophisticated type of libertarianism that rejects blind or arbitrary choice. To this end, I consider the historical context of Du Châtelet’s essay, and especially the dialectic between various (...) strands of eighteenth-century libertarianism and compatibilism. (shrink)

The consensus is that in his 1755 Nova Dilucidatio, Kant endorsed broadly Leibnizian compatibilism, then switched to a strongly incompatibilist position in the early 1760s. I argue for an alternative, incompatibilist reading of the Nova Dilucidatio. On this reading, actions are partly grounded in indeterministic acts of volition, and partly in prior conative or cognitive motivations. Actions resulting from volitions are determined by volitions, but volitions themselves are not fully determined. This move, which was standard in medieval treatments of free (...) choice, explains why Kant is so critical of Crusius’s version of libertarian freedom: Kant understands Crusius as making actions entirely random. In defense of this reading, I offer a new analysis of the version of the principle of sufficient reason that appears in the Nova Dilucidatio. This principle can be read as merely guaranteeing grounds for the existence of things or substances, rather than efficient causes for states and events. As such, the principle need not exclude libertarian freedom. Along the way, I seek to illuminate obscure aspects of Kant’s 1755 views on moral psychology, action theory, and the threat of theological determinism. (shrink)

I begin by outlining Du Châtelet’s ontology of mathematical objects: she is an idealist, and mathematical objects are fictions dependent on acts of abstraction. Next, I consider how this idealism can be reconciled with her endorsement of necessary truths in mathematics, which are grounded in essences that we do not create. Finally, I discuss how mathematics and physics relate within Du Châtelet’s idealism. Because the primary objects of physics are partly grounded in the same kinds of acts as yield mathematical (...) objects, she thinks we are sometimes licensed in drawing conclusions about physical things from mathematical premises. (shrink)

What do the biology and psychology of morality have to do with normative ethics? Our answer is, a great deal. We argue that normative ethics is an ongoing, ever-evolving research program in what is best conceived as human ecology.

At the heart of the debate between social role theorists and evolutionary psychologists is whether natural selection has designed the minds of the sexes differently to some interesting extent. In this commentary I describe the standards of evidence for both the positive and negative claims. In my opinion, Archer has met the standard for designed sex differences in intrasexual conflict.

El presente trabajo explora y sistematiza la concepción de lo cinematográfico en la obra de Martin Heidegger desde su primera mención en su bibliografía en 1929 –_Introducción a la filosofía– _hasta sus apuntes personales y sus seminarios de 1944. En primer lugar, pretendemos contribuir a la clarificación de un aspecto apenas tratado en los estudios de su filosofía del arte: su conflictiva relación con el cine, entendido siempre o bien como un proceso de exhibición vinculado con la vertiente nihilista de (...) la técnica o como un entretenimiento banal para las masas. En segundo lugar, pretendemos contextualizar y explorar una colección de textos que pueden ser entendidos como una discusión más o menos explícita con los mecanismos de control cultural de la UFA de Goebbels, tomando como referencia tanto aquellas intervenciones realizadas de manera pública –especialmente su primer seminario sobre _Heráclito _de 1943–, como sus propias anotaciones privadas consignadas en los _Cuadernos negros_, las _Meditaciones _y los _Apuntes_. (shrink)

This paper follows a trend in engineering ethics away from universal moral theories towards more contingent/contextual approaches such as pragmatist and care ethics. These methodological considerations are treated in the context of the Volkswagen Diesel Emissions scandal as a case study in the “paradox of loyalty,”. Building upon a combined pragmatist-care ethics approach, the article outlines an “ethics of commitment,” inspired by the moral philosophy of Josiah Royce. The ethics of commitment locates the site of moral value in an individual’s (...) “commitment to a cause,” where a “cause” refers to a purposive community of persons oriented by a shared end or ideal. The ethics of commitment improves upon a pragmatist-care ethics in two notable ways: first, addressing the problem of determining wrongdoing via pragmatist ethics, and second, by emphasizing the costly nature of moral action as a critical part of ethical deliberation, rather than appealing to empathy or moral sentiment. This process—described metaphorically as “centrifugal commitment”—remains contingent and fallible, but in a way that does justice to the broad scope of moral responsibility incumbent upon engineers. (shrink)

John Dewey’s role as a “public philosopher” is well-documented; his political activism, however, has not received much attention from philosophers. While Dewey is well remembered as a philosopher who escaped the walls of the academy to speak to and write for general audiences, he also lent his name, status, and intellectual energy to political organizations and movements in American politics. In the first part of the paper, I provide an introduction to Dewey’s activism and its relation to the philosophical project (...) of “democratization.” I consider present-day parallels between Dewey’s diagnosis of America’s political problems and the Bernie Sanders presidential campaign, as well as the structural and methodological challenges facing a Deweyan progressive politics. I conclude by advocating for a new conception of “public pragmatism” that reflects lessons learned and contemporary conditions for political activism by philosophers seeking to follow in Dewey’s footsteps. (shrink)

The philosophical career of Josiah Royce is defined in part by his relationship with G. H. Howison. Biographically speaking, this assertion recalls the mythic tale of how Royce received his appointment at Harvard after James “forgot” about Howison.2 Philosophically speaking, however, Howison’s interchange with Royce concerning his philosophical conception of God in the 1895 debate held at Berkeley was a crucial intersection of these two philosophers that set the directions for their future work. It was a chance for Howison to (...) “get it on,” in the words of John McDermott,3 with Royce, in a philosophical bout for the championship title of American Idealism. Royce welcomed the opportunity to return to his alma mater... (shrink)

on the morning of friday, 6 March 2020, an "Author Meets Critics" session took place in the Sor Juana room of the Hacienda Santa Clara to discuss Marilyn Fischer's Jane Addams's Evolutionary Theorizing. Chaired by Barbara Lowe, the dialogue yielded opportunities to both praise Fischer's scholarship and reassess the nature and meaning of Jane Addams's canonical work of American philosophy, Democracy and Social Ethics. The discussion proved significant enough that the editors of The Pluralist sought to reproduce it in these (...) pages.In Jane Addams's Evolutionary Theorizing, Fischer provides an "archaeological" and "architectural" treatment of DSE, delving into the source material: Addams's own lectures... (shrink)

Confronted by the White supremacists who had murdered their loved ones in June 2015, many of the family members of those killed at Mother Immanuel AME Church spoke words of forgiveness. The familie...

Many transplant programs are willing to provide a contrived medical excuse for potential organ donors who wish to say no but feel unable to do so publicly. The availability of these excuses is thought to facilitate freedom of choice—a necessary component of informed consent—by allowing donor candidates to bow out gracefully. In a recent editorial, Simmerling et al. discuss possible harms raised by this practice and note that there is no empirical evidence to support it. Given the importance of this (...) issue for transplant centers that accept living donors, a review of the authors' concerns is in order. After careful consideration, I conclude that although some of their points are valid, much of their analysis is flawed. (shrink)