L’article se propose d’explorer l’univers des facultés de droit sous la République de Weimar, que les contemporains jugent en « crise ». Cette perception renvoie tout d’abord aux difficultés d’adaptation d’un enseignement qui est de plus en plus écartelé entre les exigences de la science (transmettre une compréhension historique de l’évolution du droit) et celles de la pratique (préparer les étudiants au monde professionnel par une connaissance du droit en vigueur) : l’Université apparaît ainsi comme un lieu de confrontation entre (...) professeurs et autorités étatiques pour le contrôle du cursus juridique. Par ailleurs, dans un contexte de grande expansion des effectifs étudiants, les facultés de droit ne connaissent pas de démocratisation de leur public et restent le domaine des élites traditionnelles ; de ce fait, elles semblent en décalage avec leur époque et continuent de former un univers passéiste que conforte l’engagement des étudiants dans des corporations traditionnelles. Ce mode de socialisation explique leur radicalisation dans le camp antirépublicain dès les années 1920. (shrink)

Background The first COVID-19 wave started in February 2020 in France. The influx of patients requiring emergency care and high-level technicity led healthcare professionals to fear saturation of available care. In that context, the multidisciplinary Ethics- Support Cell (EST) was created to help medical teams consider the decisions that could potentially be sources of ethical dilemmas. Objectives The primary objective was to prospectively collect information on requests for EST assistance from 23 March to 9 May 2020. The secondary aim was (...) to describe the Cell’s functions during that period. Research design This observational, real-time study of requests for Cell consultations concerned ethical dilemmas arising during a public health crisis. The EST created a grid to collect relevant information (clinical, patient’s/designated representative’s preferences and ethical principles strained by the situation), thereby assuring that each EST asked the same questions, in the same order. Participants and research context Only our university hospital’s clinicians could request EST intervention. Ethical considerations The hospital Research Ethics Committee approved this study (no. CER-2020-107). The patient, his/her family, or designated representative was informed of this ethics consultation and most met with EST members, which enabled them to express their preferences and/or opposition. Findings/results 33 requests (patients’ mean age: 80.8 years; 29 had COVID-19: 24 with dyspnea, 30 with comorbidities). 17 Emergency Department solicitations concerned ICU admission, without reference to resource constraints; others addressed therapeutic proportionality dilemmas. Discussion Intervention-request motives concerned limited resources and treatment intensity. Management revolved around three axes: the treatment option most appropriate for the patient, the feasibility of implementation, and dignified care for the patient. Conclusions COVID-19 crisis forced hospitals to envisage prioritization of ICU access. Established decision-making criteria and protocols do not enable healthcare professionals to escape ethical dilemmas. That acknowledgement highlights ethical risks, enhances the added-value of nursing and encourages all players to be vigilant to pursue collective deliberations to achieve clear and transparent decisions. (shrink)

In vertebrates, single cell analyses of replication timing patterns brought to light a very well controlled program suggesting a tight regulation on initiation sites. Mapping of replication origins with different methods has revealed discrete preferential sites, enriched in promoters and potential G‐quadruplex motifs, which can aggregate into initiation zones spanning several tens of kilobases (kb). Another characteristic of replication origins is a nucleosome‐free region (NFR). A modified yeast strain containing a humanized origin recognition complex (ORC) fires new origins at NFRs (...) revealing their regulatory role. In cooperation with NFRs, the histone variant H2A.Z facilitates ORC loading through di‐methylation of lysine 20 of histone H4. Recent studies using genome editing methods show that efficient initiation sites associated with transcriptional activity can synergize over several tens of kb by establishing physical contacts and lead to the formation of early domains of DNA replication demonstrating a co‐regulation between replication initiation and transcription. (shrink)

INSPIRED by a dynamist Naturphilosophie and looking for a mathematics of the natura naturans, the founders of modern mathematics in Germany made some lasting contributions in the attempt to go beyond perceptible space. Hermann Grassmann’s extension theory, Johann Benedict Listing’s topology, Bernhard Riemann’s non-Euclidean manifold theory, Carl Gustav Jacob Jacobi’s approach to non-mechanistic theory and last but not least Georg Cantor’s transfinite set theory were all influenced by the tradition of Naturphilosophie. One central motivation for the new mathematics was to (...) decipher the so-called “inner side of nature” which was thought to be invisible but nonetheless physical. As a result, mathematics was understood not only in terms of quantity but of morphogenetic quality and as a tool to recognize the intrinsic possibilities of structuring and organizing nature. This essay focuses on the philosophical viewpoints of Christian Samuel Weiss, Justus and Hermann Grassmann, Bernhard Riemann and their reception of Schelling’s philosophy. Riemann deconstructed empiricist theories of space so as to glean the fundamental constitution of space. One result was that a given, fixed and static metric is not necessary for the understanding of space. The underlying topological substratum has no specific metric but is capable of exhibiting any possible metric. Riemann’s claims are compared with Schelling’s theory of space in his “Darstellung des Naturprocesses”. My thesis is that Schelling’s philosophy of the emergence of space can be read in Riemannian terms and that it is an interesting model in the context of modern questions. (shrink)

Sacred Landscape and Visual Culture. The Paintings of the Lower Church of the Sacro Speco at Subiaco - The purpose of this article is to investigate the emergence of landscape in visual discourses. The subject of this research is the territory of Subiaco and - more specifically - the monastery of the Sacro Speco, built on the site of St Benedict’s hermitage. It is here, in the vast decorative cycle directed by Magister Conxolus at the end of the thirteenth century, (...) that the “sacred landscape” of Subiaco is bent by the monastic community to claim its possession. Benedict is always portrayed inside his Grotto - which becomes a veritable “attribute” of the saint - and the same discourse also includes the portrayal of Chelidonia, a Benedictine hermit nun who lived between the eleventh and twelfth centuries. Through the experiences of the two saints, the landscape becomes sacralised and acquires an identity value for the Benedictine community which lives there. In this context, the figures of Benedict and Chelidonia create a visual bridge to Francis and Clare, and the frescoes becomes a Benedictine response to the “Franciscan challenge”. (shrink)

L'itinéraire singulier d'une femme que l'on pourrait, par bien des aspects, considérer comme appartenant à un passé déjà lointain, suscite pourtant chez nombre de nos contemporains un intérêt de plus en plus grand. Edith Stein - connue également sous le nom, qu'elle prit au Carmel, de Thérèse-Bénédicte de la Croix - reste aux yeux de beaucoup un témoin particulièrement saisissant des drames fondamentaux qui ont jalonné le XXe siècle européen et dont nous sommes, pour le meilleur comme peut-être pour (...) le pire, les héritiers. C'est à ce titre que sa vie et son message peuvent constituer pour notre avenir une lumière digne d'être interrogée. S'il est vrai que l'Europe doit d'abord et avant tout être un espace où vivent et se rencontrent des êtres humains capables de promouvoir une culture empreinte de dignité et de responsabilité, il était alors tout naturel de prendre comme fil conducteur de ce colloque le thème essentiel de la réflexion steinienne : la question de la personne humaine. Quatre approches complémentaires ont été choisies pour déployer quelques-unes des composantes de cette interrogation : L'enracinement philosophique d'Edith Stein dans le milieu phénoménologique de Göttingen, sa situation dans l'histoire de son temps, son activité d'éducatrice au service de la formation intégrale de la personne humaine, l'accomplissement de son engagement intellectuel dans la réflexion théologique et l'expérience du mystère de la Croix. (shrink)

La diffusion des révisions hiéronymiennes des Bibles latines s’est faite notamment à travers les textes liturgiques latins. La présente communication s’intéresse à l’utilisation de l’oeuvre du moine de Bethléem dans les prières des livres liturgiques (missels, sacramentaires et bénédictions pontificales). Elle est centrée sur les citations des livres dits “des petits prophètes”. Si l’oeuvre de Jérôme s’impose progressivement dans la vie liturgique occidentale à partir de la deuxième moitié du VIIe et du VIIIe siècle, plusieurs missels et sacramentaires comportent aussi (...) bien des citations de la révision de Jérôme que de versions des Vieilles latines. C’est notamment le cas de sacramentaires irlandais de la fin du VIIe siècle et du missel gallican dit Missale Gothicum, datant des années 700. À cette époque, l’oeuvre de Jérôme n’est donc pas encore utilisée par la liturgie comme un ensemble unifié. La citation et l’allusion aux anciennes traductions latines persiste même dans la péninsule ibérique et la liturgie mozarabe jusqu’au XIIe siècle. Une étude détaillée des allusions au livre II de Jonas montre que des morceaux de versets issus des Vieilles latines se sont maintenus pendant tout le Moyen-Âge dans des livres ayant recours à la Vulgate, peut-être parce qu’ils étaient passés dans la culture biblique collective. Cet article souligne donc la nécessité d’une analyse détaillée, livre liturgique par livre liturgique, pour étudier les citations de la Bible dans la liturgie latine, car une même pièce liturgique peut emprunter à plusieurs traductions différentes. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:168 BOOK REVIEWS Santurri, on the basis of the overall argument he constructs, would certainly say that no genuine dilemma exists in this case. Obligations to God must be taken to trump all others, and so one is confronted neither with a conflict in the natural law nor between specific divine commands. Nonetheless, one is left, as in the point made above, with the question of what responsibilities are (...) incurred both by God and by human agents when moral obligations are set aside, if indeed they are, for religious ones? These questions need to be addressed for reasons additional to comprehensiveness. They are central to the project Santurri has undertaken, which as I take it is to show that the moral life is coherent and not self-frustrating. Now, there are at least two ways in which the moral life can founder. The first is the one Santurri so ably discusses. It might he that the moral universe is structured in such a way that one cannot avoid doing wrong in doing right. The second is suggested by the questions asked immediately above which he does not address. It may he that, in setting aside one obligation for another, additional obligations are engendered which might possibly make the living of the moral life after either self-defeating or exhausting or both. Perhaps moral or religious/moral tensions do not contain genuine dilem· mas, hut suppose they generate fearful moral debts that simply con· tinue to pile up? It is the mark of a good book to leave its readers with questions they did not have when first they picked it up. The questions I have just put are intended to suggest what a fertile field Santurri has begun to plow and what a fine job he has performed in doing so. The General Theological Seminary New York, N.Y. PHILIP TURNER Theologies of the Body: Humanist and Christian. By BENEDICT ASHLEY, O.P. Braintree, Mass: The Pope John XXIII Medical Moral Center, 1985. Pp. xii + 770. $20.95 (paper). This is one of those rare books which can truly he called a master· piece, the sort of book to which one can (and indeed must) return time and time again for instruction and enlightenment. To do justice to it in a short review is impossible, but I hope to call attention to the features that make it so exceptionally worthwhile and important. It is, first of all, a work of immense learning, packed with informa· tion and extensive documentation. The author's mastery of contem· BOOK REVIEWS 169 porary science and of the historical development of both philosophy and theology is amazing. But more than this, Ashley knows how to go to the heart of the matter, to sift the incidental from the essential. Serenely confident that the precious truths of Christian relevation are compatible with the truths that can he known through scientific and philosophic inquiry, Ashley offers readers a work that in very many ways can be described as a contemporary apologetic, one that shows the reasonableness and intelligibility of Catholic faith. For while the central focus of the book is on anthropology, on the meaning of the human person, its ultimate goal, so it seems to me, is to show the rea· sonableness and credibility of the Christian understanding of the human person as a bodily being, made in God's image and redeemed by the death and resurrection of the Word, who for love of humankind he· came flesh. The work is divided into four parts. Parts One and Two, " Science, the Body, and Humanist Theology" and "Christian Theologies of the Body," are, to a great extent, massively erudite discussions intended to prepare the way for the author's thoughtful and thought-provoking articulation of a philosophically sound account of the human person and of the human person's divine vocation in Parts Three and Four, " A Radical Process Interpretation of Science " and " A Process The· ology of the Body." In Part One Ashley first provides readers with a fascinating sum· mary of what modern science has to tell us about human beings as bodily entities. His conclusion is that modern science has by no means... (shrink)

Back cover: This book develops a philosophical account that reveals the major characteristics that make an explanation in the life sciences reductive and distinguish them from non-reductive explanations. Understanding what reductive explanations are enables one to assess the conditions under which reductive explanations are adequate and thus enhances debates about explanatory reductionism. The account of reductive explanation presented in this book has three major characteristics. First, it emerges from a critical reconstruction of the explanatory practice of the life sciences itself. (...) Second, the account is monistic since it specifies one set of criteria that apply to explanations in the life sciences in general. Finally, the account is ontic in that it traces the reductivity of an explanation back to certain relations that exist between objects in the world (such as part-whole relations and level relations), rather than to the logical relations between sentences. Beginning with a disclosure of the meta-philosophical assumptions that underlie the author’s analysis of reductive explanation, the book leads into the debate about reduction(ism) in the philosophy of biology and continues with a discussion on the two perspectives on explanatory reduction that have been proposed in the philosophy of biology so far. The author scrutinizes how the issue of reduction becomes entangled with explanation and analyzes two concepts, the concept of a biological part and the concept of a level of organization. The results of these five chapters constitute the ground on which the author bases her final chapter, developing her ontic account of reductive explanation. (shrink)

The goal of this chapter is to mount a critique of the claim that cognitive content (that is, the kind of content possessed by our concepts and thoughts) makes a constitutive contribution to the phenomenal properties of our mental lives. We therefore defend the view that phenomenal consciousness is exclusively experiential (or nonconceptual) in character. The main focus of the chapter is on the alleged contribution that concepts make to the phenomenology of visual experience. For we take it that if (...) cognitive phenomenology is to be found anywhere, it should be found here. However, we begin with a discussion of the question of cognitive phenomenology more generally, and we close by sketching how our argument might be extended into the domain of non-perceptual thought. (shrink)

The book is about logical analysis of natural language. Since we humans communicate by means of natural language, we need a tool that helps us to understand in a precise manner how the logical and formal mechanisms of natural language work. Moreover, in the age of computers, we need to communicate both with and through computers as well. Transparent Intensional Logic is a tool that is helpful in making our communication and reasoning smooth and precise. It deals with all kinds (...) of linguistic context in a fully compositional and anti-contextual way. (shrink)

The “gift exchange theory” articulated by Marcel Mauss, along with his core concept of a threefold obligation, is the dominant theoretical framework used to explain the majority of gift issues in marketing. This perspective assumes that some interest always lies behind gifts, such that a gift always implies a counterpart of receiving something in return. Despite the relevance of this approach in understanding the day-to-day consumer behavior, this paper presents empirical cases where the consumer is also able to give freely, (...) that is to say without implying a counterpart or even expecting it. To explain those empirical cases, we mobilize a key teaching of the Catholic Church: the “gratuitous gift” and then introduce the concept of the “need to give.” We show that gratuitousness is a relevant concept to understand most of gifts made by consumers, and we develop the normative aspect of gratuitous gift for ethical marketers. We also show that Catholic Social Teaching offers an appropriate anthropology to understand consumer behaviors motivated by this need for gratuitousness. To conclude, we propose further avenues of research. (shrink)

Living labs are interdisciplinary and participatory initiatives aimed at bringing research closer to practice by involving stakeholders in all stages of research. Living labs align with the principles of participatory research methods as well as recent insights about how participatory ways of generating knowledge help to change practices in concrete settings with respect to specific problems. The participatory, open, and discussion‐oriented nature of living labs could be ideally suited to accompany ethical reflection and changes ensuing from reflection. To our knowledge, (...) living labs have not been explicitly trialed and reported in ethics literature. In this discussion paper, we report and discuss four initial issues that marked the process of setting up a living lab in ethics: (1) determining the goals and expected outcomes of an ethics living lab; (2) establishing operational procedures; (3) selecting communities and defining pilot projects; and (4) adopting a lens to tackle emerging questions and challenges. We explain these four issues and present the paths taken based on the novel and specific orientation, that is, living ethics, at the basis of this project. In alignment with living ethics and É‐LABO, we approach challenges as learning opportunities to ask not only “how” questions but also “why” questions. We hope that this discussion paper informed by our experience helps to clarify the theoretical, methodological, and practical approaches necessary to successfully adopt and employ living labs in ethics. (shrink)

This article presents, in a programmatic way, the histoire croisée approach, its methodological implications and its empirical developments. Histoire croisée draws on the debates about comparative history, transfer studies, and connected or shared history that have been carried out in the social sciences in recent years. It invites us to reconsider the interactions between different societies or cultures, erudite disciplines or traditions . Histoire croisée focuses on empirical intercrossings consubstantial with the object of study, as well as on the operations (...) by which researchers themselves cross scales, categories, and viewpoints. The article first shows how this approach differs from purely comparative or transfer studies. It then develops the principles of pragmatic and reflexive induction as a major methodological principle of histoire croisée. While underlining the need and the methods of a historicization of both the objects and categories of analysis, it calls for a reconsideration of the way history can combine empirical and reflexive concerns into a dynamic and flexible approach. (shrink)

To revitalize nursing science, there is a need for a new approach to guide nurse scientists in addressing complex problems in health care. By applying theoretical concepts from a revolutionary philosopher of science, Paul K. Feyerabend, new nursing knowledge can be produced using creativity and pluralistic approaches. Feyerabend proposed that methods within and outside of science can produce knowledge. Despite the recognition of Feyerabendian philosophy within science, there is currently a lack of literature regarding the relevance of Feyerabendian philosophy for (...) nursing science. We aim to (a) describe and critique Feyerabendian concepts, (b) discuss the potential application of Feyerabendian philosophy for knowledge production within gerontological nursing and (c) describe theoretical possibilities for nurse scientists in using Feyerabendian philosophy to guide nursing knowledge development. We begin by introducing Feyerabend's life and his inspirations for his theoretical concepts, epistemological anarchism, theoretical pluralism and humanitarianism, and conclude by offering suggestions of how to apply Feyerabendian philosophy in nursing research. (shrink)

Personhood is ascribed on others, such that someone who is recognized to be a person is bestowed with certain civil rights and the right to decision making. A rising question is how severely brain-injured patients who regain consciousness can also regain their personhood. The case of patients with locked-in syndrome is illustrative in this matter. Upon restoration of consciousness, patients with LIS find themselves in a state of profound demolition of their bodily functions. From the third-person perspective, it can be (...) expected that LIS patients might experience a differential personal identity and may lose their status as persons. However, from the patients’ perspective, it is uncontested that they retain their personal identity and that they consider themselves to be persons. We here include results from a survey with patients with LIS aimed at identifying the primary expectations of patients for their care by non-medical professionals. Based on these first-hand reports, we argue that personhood in LIS is progressively regained as the widening circle of others recognizes them as persons. (shrink)

This dissertation aims to construct a non-dogmatic defence of common sense. It tries to show why the absence of justification for the judgements of common sense, which the sceptic reveals, does not invalidate them.

This paper is a review of the nine chapters more directly concerned with philosophy of the volume Jaina Scriptures and Philosophy. Edited in 2015 by Peter Flügel and Olle Qvarnström, this interdisciplinary volume in philosophy, philology, linguistics, literary studies and history is presented as an essential contribution to the study of Jaina philosophy inasmuch as it offers a collection of cutting-edge analyses on the emergence and development of philosophical concepts such as the Self and its epistemic faculties, with a focus (...) on early Jaina canonical literature and commentaries thereof. (shrink)

Are fragile majorities capable of opening themselves to deep-rooted and new ethnic and cultural pluralism? What role does education play in this process? Based on ten years of comparative research, Fragile Majorities and Education is a nuanced study of ethnic dominance, linguistic integration of immigrants, and diversity in education. Ethnic relations are often depicted in an oversimplified framework where a clear dominant majority exercises power over various minorities. In many societies worldwide, however, this model does not hold true. In some (...) countries, two or more groups possess relatively equal power to control the state and impose their definitions of the nation, as is the case with Flemish speakers and French speakers in Belgium, and with Catholics and Protestants in Northern Ireland. In other instances, such as in Quebec or Catalonia, clearly identifiable majorities are nonetheless minorities at a larger nation-state level, which creates a situation of ambiguous ethnic dominance. Marie McAndrew analyzes and clarifies these complex situations through the lens of education as a means for both maintaining and transforming ethnic boundaries and identities. Deeply insightful and meticulously researched, Fragile Majorities and Education is a groundbreaking contribution to the field of ethnic studies. (shrink)

Originally presented as the author's thesis, Paris-Sorbonne, 1974.

Introduction -- From natural philosophy to theories of method -- Explanations, laws, and theories -- Change and the effect on scientific realism -- Science, society, and values -- Conclusion -- Glossary.

Individuals of many animal species are said to have a personality. It has been shown that some individuals are bolder than other individuals of the same species, or more sociable or more aggressive. In this paper, we analyse what it means to say that an animal has a personality. We clarify what an animal personality is, that is, its ontology, and how different personality concepts relate to each other, and we examine how personality traits are identified in biological practice. Our (...) analysis shows that biologists often study specific personality traits, such as boldness, sociability or aggressiveness, rather than personalities in general. We claim that personality traits are best understood as dispositions and that they are operationally defined in terms of certain sets of behaviours, which are studied in specific experimental set-ups. Furthermore, we develop an integrative philosophical account that specifies and formalises three criteria for identifying personality traits, which are used in biological practice. For an individual animal to have a personality trait it must, first, behave differently than others. Second, these behavioural differences must be stable over a certain time, and third, they must be consistent in different contexts. (shrink)

Demandée dès 1840 par Siméon-Denis Poisson, une agrégation spécialisée pour les sciences naturelles est créée par Victor Duruy: elle établit une triple spécialisation (sciences mathématiques, physiques, naturelles) au concours d'agrégation pour les lycées et introduit conjointement dans chacune des agrégations une composition de méthode et d'histoire des sciences dans la spécialité concernée. L'évolution de ce concours est étudiée jusqu'au milieu du xxe siècle. D'autres types de concours d'agrégation (agrégation de l'enseignement spécial, agrégation féminine, agrégation des facultés) ont existé où l'histoire (...) naturelle a trouvé place. (shrink)

The effects of mental fatigue on both cognitive and physical performance are well described in the literature, but the recovery aspects of mental fatigue have been less investigated. The present study aimed to fill this gap by examining the persistence of mental fatigue on behavior and electrophysiological mechanisms. Fifteen participants performed an arm-pointing task consisting of reaching a target as fast as possible, before carrying out a 32-min cognitively demanding task [Time Load Dual Back task], and immediately, 10 and 20 (...) min after completion of the TLDB task. During the experiment, electroencephalography was continuously recorded. The significant increase in mental fatigue feeling after the TLDB task was followed by a decrease during the 20 min of recovery without returning to premeasurement values. Brain oscillations recorded at rest during the recovery period showed an increase in both theta and alpha power over time, suggesting a persistence of mental fatigue. Arm-pointing movement duration increased gradually over time during the recovery period, indicating that behavioral performance remained impaired 20 min after the end of the cognitively demanding task. To conclude, subjective measurements indicated a partial recovery of mental fatigue following a cognitively demanding task, whereas electrophysiological and behavioral markers suggested that the effects of mental fatigue persisted for at least 20 min. While the subjective evaluation of mental fatigue is a very practical way to attest the presence of mental fatigue, electrophysiological and behavioral measures seem more relevant to evaluate the time course of mental fatigue effects. (shrink)

This timely Research Handbook offers significant insights into an understudied subject, bringing together a broad range of socio-legal studies of medicine to help answer complex and interdisciplinary questions about global health - a major challenge of our time. Interdisciplinary chapters explore both how the terrain of medicine can generate new questions about law, regulation and the state, and how the law intersects with health and medicine at every level. Bringing together leading international scholars, the Research Handbook assembles concrete case studies (...) to suggest avenues for further research on socio-legal inquiries, such as the construction of disorders by law, the reparation of injuries, and how race and gender impact justice. The Research Handbook for Socio-Legal Studies of Medicine and Health will be an inspiring read for researchers, academics and graduate students in the fields of health law, socio-legal studies, and gender and sexuality. (shrink)

L'usage du monde numérique, et plus particulièrement de l'Internet, crée des traces qui constituent la source de services que les utilisateurs contribuent à personnaliser eux-mêmes. En échangeant leurs favoris, leurs photos, leurs informations de toutes sortes, les utilisateurs révèlent leurs préférences et renforcent l'utilité du service qu'ils sont en train d'utiliser. Une première génération de services s'appuie sur les mécanismes d'une rationalité exploratoire, tirant bénéfice du savoir collectif . Une seconde génération de services va plus loin en utilisant les préférences (...) déclarées pour connecter des individus « qui se ressemblent » . Ces évolutions suggèrent le passage d'une économie de stock à une économie de flux où le bien rare est moins l'information que l'attention nécessaire pour la traiter. Elles ont des conséquences sur la gestion de l'identité numérique des individus et rend de moins opérant la notion juridique de la privacy.Using the digital world, and especially the Internet, generates traces that become the basis for services which are customised by the contributions of users themselves. As they share their favourites, photos and information of all kinds, users not only disclose their preferences but also strengthen the utility of the service they are using. Some first-generation services rely on mechanisms based on exploratory rationality and drawing on collective knowledge . A second type of service goes a step further by using displayed preferences to connect people who are "alike" . These trends suggest a switch from a stock-based economy to a flow-based economy, where the most valuable asset is not information as such but the attention it attracts. These developments are creating issues relating to the management of individual digital identities, and bringing the relevance of the legal notion of privacy into question. (shrink)