Diversity of practice is widely recognized as crucial to scientific progress. If all scientists perform the same tests in their research, they might miss important insights that other tests would yield. If all scientists adhere to the same theories, they might fail to explore other options which, in turn, might be superior. But the mechanisms that lead to this sort of diversity can also generate epistemic harms when scientific communities fail to reach swift consensus on successful theories. In this paper, (...) we draw on extant literature using network models to investigate diversity in science. We evaluate different mechanisms from the modeling literature that can promote transient diversity of practice, keeping in mind ethical and practical constraints posed by real epistemic communities. We ask: what are the best ways to promote an appropriate amount of diversity of practice in scientific communities? (shrink)

Collaboration is increasingly popular across academia. Collaborative work raises certain ethical questions, however. How will the fruits of collaboration be divided? How will the work for the collaborative project be split? In this paper, we consider the following question in particular. Are there ways in which these divisions systematically disadvantage certain groups? -/- We use evolutionary game theoretic models to address this question. First, we discuss results from O'Connor and Bruner (unpublished). In this paper, we show that underrepresented groups (...) in academia can be disadvantaged in such situations by dint of their small numbers. Second, we present novel results exploring how the hierarchical structure of academia can lead to bargaining disadvantage. We investigate models where one actor has a higher baseline of academic success, less to lose if collaboration goes south, or greater rewards for non-collaborative work. We show that in these situations, the less powerful partner is disadvantaged in bargaining over collaboration. (shrink)

In this paper we use an experimental approach to investigate how linguistic conventions can emerge in a society without explicit agreement. As a starting point we consider the signaling game introduced by Lewis. We find that in experimental settings, small groups can quickly develop conventions of signal meaning in these games. We also investigate versions of the game where the theoretical literature indicates that meaning will be less likely to arise—when there are more than two states for actors to transfer (...) meaning about and when some states are more likely than others. In these cases, we find that actors are less likely to arrive at strategies where signals have clear conventional meaning. We conclude with a proposal for extending the use of the methodology of experimental economics in experimental philosophy. (shrink)

This article uses sim-max games to model perceptual categorization with the goal of answering the following question: To what degree should we expect the perceptual categories of biological actors to track properties of the world around them? I argue that an analysis of these games suggests that the relationship between real-world structure and evolved perceptual categories is mediated by successful action in the sense that organisms evolve to categorize together states of nature for which similar actions lead to similar results. (...) This conclusion indicates that both strongly realist and strongly antirealist views about perceptual categories are too simple. (shrink)

Biologists and philosophers of biology have argued that learning rules that do not lead organisms to play evolutionarily stable strategies (ESSes) in games will not be stable and thus not evolutionarily successful. This claim, however, stands at odds with the fact that learning generalization---a behavior that cannot lead to ESSes when modeled in games---is observed throughout the animal kingdom. In this paper, I use learning generalization to illustrate how previous analyses of the evolution of learning have gone wrong. It has (...) been widely argued that the function of learning generalization is to allow for swift learning about novel stimuli. I show that in evolutionary game theoretic models learning generalization, despite leading to suboptimal behavior, can indeed speed learning. I further observe that previous analyses of the evolution of learning ignored the short term success of learning rules. If one drops this assumption, I argue, it can be shown that learning generalization will be expected to evolve in these models. I also use this analysis to show how ESS methodology can be misleading, and to reject previous justifications about ESS play derived from analyses of learning. (shrink)

This paper focuses on 3 features of Freyenhagen's Aristotelian version of Adorno. (a) It challenges the strict negativism Freyenhagen finds in Adorno. If we have morally relevant interests in ourselves, it is implicit that we have a standard by which to understand what is both good and bad for us (our interests). Because strict negativism operates without reference to what is good, it seems to be detached from real interests too. Torture, it is argued, is, among other things, a violation (...) of those interests. (b) Freyenhagen identifies the “impulse” in Adorno as an untutored yet moral reaction to morally demanding situations. The plausibility of this primitivism and its compatibility with Adorno's general worries about immediacy are considered. (c) The disruptive character of Adorno's version of the categorical imperative, its willingness to complicate action through wholesale reflection on the norms of what we are committing ourselves to, is set in contrast with Freyenhagen's Aristotelian claim that certain notions, such as “humanity,” cannot be intelligibly questioned. (shrink)

We present an original emergent individuals view of human persons, on which persons are substantial biological unities that exemplify metaphysically emergent mental states. We argue that this view allows for a coherent model of identity-preserving resurrection from the dead consistent with orthodox Christian doctrine, one that improves upon alternatives accounts recently proposed by a number of authors. Our model is a variant of the “falling elevator” model advanced by Dean Zimmerman that, unlike Zimmerman’s, does not require a closest continuer account (...) of personal identity. We end by raising some remaining theological concerns. (shrink)

Given its centrality to the intellectual thought processes through which the great structures of logic, nature, and spirit are unfolded it is clear that mediation is vital to the very possibility of Hegel’s encyclopaedic philosophy. Yet Hegel gives little specific explanation of the concept of mediation. Surprisingly, it has been the subject of even less attention by scholars of Hegel. Nevertheless it is casually used in discussions of Hegel and post- Hegelian philosophy as though its meaning were simple and straightforward. (...) In these discussions mediation is the thesis that meanings are not atomic in that the independence of something is inseparable from its relation to something else. Hence being is mediated by nothing, the particular by the universal, the individual by society. But does Hegel ever explain mediation in a way which justifies such use of the concept? The same easy employment of mediation is found in Theodor Adorno whose works are replete with the use of this concept and, indeed, acknowledgements of its Hegelian origin. But the concept of mediation in Adorno’s negative dialectic is operative in an entirely different context from that of Hegel. How, it might be asked, can a concept be so adaptable? I want to argue that mediation is, in fact, an equivocal term which in both Hegel and Adorno covers a variety of entirely different conceptual relations. Furthermore, as propounded by both Hegel and Adorno it lacks the rigour which could allow the particular conclusions which the concept allegedly facilitates. (shrink)

This paper critically evaluates what it identifies as ‘the institutional theory of freedom’ developed within recent neo-Hegelian philosophy. While acknowledging the gains made against the Kantian theory of autonomy as detachment it is argued that the institutional theory ultimately undermines the very meaning of practical agency. By tying agency to institutionally sustained recognition it effectively excludes the exercise of practical reason geared toward emancipation from a settled normative order. Adorno's notion of autonomy as resistance is enlisted to develop an account (...) of practical reason that is neither institutionally constrained nor without appropriate consideration of the historical location of the practical agent. (shrink)

The central concern of this paper is to explore the efforts of Schiller's post-Kantian idealism and Marcuse's critical theory to develop a new conception of free human experience. That conception is built on the notion of play. Play is said to combine the human capacities for physical pleasure and reason, capacities which the modern world has dualized. Analysis of their respective accounts of play reveals its ambivalent form in the work of both philosophers. Play supports the ideal of ‘freedom from (...) necessity’, understood as a release from all external constraint. But it also appears to serve as a model for ‘freedom as a higher necessity’. In the case of Schiller, the ambivalence encompasses idle play and an obligation to make ourselves worthy of freedom. For Marcuse, play represents a kind of libidinal idleness while also underpinning a non-alienated conception of labour. (shrink)

This paper criticizes the assumptions behind Robert Brandom’s reading of Hegel’s Phenomenology, contending that Hegel’s concern with the rational structure of experience, his valorization of reflection over ordinary experience and his idea of the necessit y of progress in knowledge cannot be accommodated within the framework of semantic pragmatism. The central contentions are that Brandom’s pragmatism never comes to terms with Hegel’s idea of truth as a result, leading to a historicist distortion, and also that Brandom’s failure to deal with (...) Hegel’s distinction between natural consciousness and the phenomenological observer collapses Hegel’s phenomenology into a philosophy restricted to the level of natural consciousness. (shrink)

In an era of digital revolution, artificial intelligence, big data and augmented reality, technology has shifted from being a tool of communication to a primary medium of experience and sociality. Some of the most basic human capacities are increasingly being outsourced to machines and we increasingly experience and interpret the world through digital interfaces, with machines becoming ever more ‘social’ beings. Social interaction and human perception are being reshaped in unprecedented ways. This book explores this technologisation of the social and (...) the attendant penetration of permanent liminality into those aspects of the lifeworld where individuals had previously sought some kind of stability and meaning. Through a historical and anthropological examination of this phenomenon, it problematises the underlying logic of limitless technological expansion and our increasing inability to imagine either ourselves or our world in other than technological terms. Drawing on a variety of concepts from political anthropology, including liminality, the trickster, imitation, schismogenesis, participation, and the void, it interrogates the contemporary technological revolution in a manner that will be of interest to sociologists, social and anthropological theorists and scholars of science and technology studies with interests in the digital transformation of social life. -/- Table of Contents -/- Introduction: The Technologisation of the Social: A 21st-Century Megamachine? Paul O’Connor -/- 1. Communication as Theatricalisation: Self-Presentation in the Digital Age Arpad Szakolczai -/- 2. Parasites of the Social: Digital Disruptions of the Labour Market Tom Boland -/- 3. Possessed by Technology: The Metastasis of Absence Agnes Horvath -/- 4. Technologisation of the Social: Symbiosis, Parasitism, or Predation? Daniel Gati -/- 5. J'accuse Zéro: The Technology of Zero and the Making of a Personal Void Ray Griffin -/- 6. Digital Affordances and the Liminal Stephen Turner -/- 7. The Smart Womb: Digital Technologies and the Maze of Trickster Politics Marius Ion Benta -/- 8. Brave New Industry? The Dark Side of Dematerialisation and Industry 4.0 Thomas S.J. Smith -/- 9. ‘What Have You Caught?’: Nannycams and Hidden Cameras as Normalised Surveillance of the Intimate Janos Mark Szakolczai -/- 10. Coercive Visibility: Discipline in the Digital Public Arena Paul O’Connor -/- Conclusion: Is There a Way Out of the Technologisation of the Social? Marius Ion Benta. (shrink)

This paper contends that Kant’s argument in the Refutation of Idealism section of the Critique of Pure Reason misses a step which allows Kant to move illicitly from inner experience to outer objects. The argument for persistent outer objects does not comprehensively address the skeptic’s doubts as it leaves room for the question about the necessary connection between representations and outer objects. A second fundamental issue is the ability of transcendental idealism to deliver the account of outer objects, as required (...) by the Refutation of Idealism itself. (shrink)

Adorno and Heidegger are frequently aligned because of apparent similarities in their critiques of modern epistemology. This alignment fails, however, to appreciate the substantial differences in the philosophical presuppositions that inform those very critiques. I distinguish Adorno's negative dialectic from Heidegger's fundamental ontology under the respective designations of critical versus phenomenological forms of transcendental philosophy. I argue that only by understanding Adorno's negative dialectic as a revised version of epistemology (namely a dialectical epistemology, committed to subject-object and transcendental argument) can (...) we make sense of, first, the profound differences between Adorno and Heidegger on the question of epistemology and, second, the philosophical motivations behind Adorno's trenchant rejection of Heidegger. Key Words: being-in-the-world • - dialectics • - empiricism • - epistemology • - idealism • - identity • - immediacy • - irrationalism • - mediation • - project • - subject • -object • - transcendental. (shrink)

The beginning of the 21st century has seen the renewed use of aesthetics as a critical and interpretive method within various discursive spheres. Particularly, and unsurprisingly, this move has been most pronounced in the discursive systems of philosophy and the artworld. It is to this more specific re-discovery that the authors in this journal address their arguments.

The core argument of the paper is that the modern philosophical notion of self-constitution is directed against the prospect of human beings dissolving into idleness. Arguments for self-constitution are marked by non-philosophical presuppositions about the value of usefulness. Those arguments also assume a particular conception of superior experience as conscious integration of a person’s actions within an identifiable set of chosen commitments. Exploring particular arguments by Hegel, Kant, Korsgaard and Frankfurt the paper claims that those arguments are problematic in the (...) various ways in which they suppose usefulness and explicitly or implicitly take extra-philosophical views of idleness. (shrink)

This is a critical theoretical investigation of Hubert Dreyfus’ ‘phenomenology of everyday expertise’ (PEE). Operating mainly through the critical perspective of the ‘emancipatory interest’ the article takes issue with the contention that when engaged in expert action human beings are in non-deliberative, reason-free absorption. The claim of PEE that absorbed actions are not amenable to reconstruction places those actions outside the space of reasons. The question of acting under the wrong reasons – the question upon which the emancipatory interest rests (...) – is thereby rendered groundless. A further difficulty for the emancipatory interest is the elimination by PEE of reflective agency. Framing expert action as perception- and affordance-driven, PEE diminishes practical reasoning. Furthermore, it understands freedom – consistently with its notion of action as affordance – as primarily the capacity of human beings to submit themselves to processes rather than to step back reflectively from them. Several criticisms of the philosophical delimitations created by methodology of PEE – phenomenology – are also developed. (shrink)

International Journal of Philosophical Studies, Volume 19, Issue 5, Page 753-760, December 2011.

In this paper we critically examine and seek to extend Philip Kitcher’s Ethical Project to weave together a distinctive naturalistic conception of how ethics came to occupy the place it does in our lives and how the existing ethical project should be revised and extended into the future. Although we endorse his insight that ethical progress is better conceived of as the improvement of an existing state than an incremental approach towards a fixed endpoint, we nonetheless go on to argue (...) that the metaethical apparatus Kitcher constructs around this creative metaethical proposal simply cannot do the work that he demands of it. The prospect of fundamental conflict between different functions of the ethical project requires Kitcher to appeal to a particular normative stance in order to judge specific changes in the ethical project to be genuinely progressive, and we argue that the virtues of continuity and coherence to which he appeals can only specify rather than justify the normative stance he favors. We conclude by suggesting an alternative approach for ethical naturalists that seems to us ultimately more promising than Kitcher’s own. (shrink)

Review of Peter Godfrey-Smith's Philosophy of Biology.

What would be a fair model for flood insurance? Catastrophic flooding has become increasingly frequent in the UK and, with climate change, is likely to become even more frequent in the future. With the UK's current flood insurance regime ending in 2013, we argues that: -/- - there is an overwhelming case for rejecting a free market in flood insurance after 2013; - this market-based approach threatens to leave many thousands of properties uninsurable, leading to extensive social blight; - there (...) are a number of possible flood insurance models that would be fairer and more sustainable. -/- We outline three approaches to 'fairness' in flood insurance, and argues that the second and third of these would be the most 'solidaristic' – i.e. those at lower risk of flooding would contribute to the support of people at higher risk: -/- 'pure actuarial fairness' – insurance costs directly reflect the level of risk faced by individuals; 'choice-sensitive fairness' – insurance costs should reflect only those risks that result from each individual's choices; 'fairness as social justice' – insurance should be provided independently of individuals' risks and choices when covering basic requirements of social justice. (shrink)

Research assessment and grant funding are vital to higher education. However, the reliance on quantitative metrics in these processes has raised concerns about their validity and potential negative consequences. This study aims to investigate the game of numbers in research assessment and grant funding, focusing on the perspectives of experienced researchers from around the globe. Accidental sampling elicited responses from more than 15 experienced researchers across different academic disciplines, institutions, and countries. The data were collected from the popular “Reviewer 2 (...) Must be Stopped!” Facebook platform, which includes more than 135,000 members across the globe. Two posts were made, allowing participants to share their experiences, perspectives, and concerns related to metrics and numbers in research assessment and grant funding. The results from the thematic analysis revealed diverse perspectives among experienced researchers. Some participants expressed concerns about the dominance of quantitative metrics, highlighting the limitations and potential biases associated with their use. Others acknowledged the value of certain indicators in showcasing research impact. Moreover, the impact of metrics on grant funding awards was also documented. The study highlights the necessity for a more balanced and context-aware approach to research assessment and grant funding, incorporating qualitative measures and acknowledging the diverse nature of research impact. (shrink)

To hold an environmental ethic is to hold that non-human beings and states of affairs in the natural world have intrinsic value. This seemingly straightforward claim has been the focus of much recent philosophical discussion of environmental issues. Its clarity is, however, illusory. The term ‘intrinsic value’ has a variety of senses and many arguments on environmental ethics suffer from a conflation of these different senses: specimen hunters for the fallacy of equivocation will find rich pickings in the area. This (...) paper is largely the work of the underlabourer. I distinguish different senses of the concept of intrinsic value, and, relatedly, of the claim that non-human beings in the natural world have intrinsic value; I exhibit the logical relations between these claims and examine the distinct motivations for holding them. The paper is not however merely an exercise in conceptual underlabouring. It also defends one substantive thesis: that while it is the case that natural entities have intrinsic value in the strongest sense of the term, i.e., in the sense of value that exists independently of human valuations, such value does not as such entail any obligations on the part of human beings. The defender of nature’s intrinsic value still needs to show that such value contributes to the well-being of human agents. (shrink)

This paper canvasses the various dimensions along which theories of truth may disagree about the extent to which truth is minimal.

The representational theory of phenomenal experience is often stated in terms of a supervenience thesis: Byrne recently characterises it as the thesis that “there can be no difference in phenomenal character without a difference in content”, while according to Tye, “[a]t a minimum, the thesis is one of supervenience: necessarily, experiences that are alike in their representational contents are alike in their phenomenal character.” Consequently, much of the debate over whether representationalism is true centres on purported counter-examples – that is (...) to say, purported failures of supervenience. The refutation of putative counter-examples has been, it seems to me, by and large successful. But there is a certain class of these for which the representationalist response has been something less than completely convincing. These are the cross-modality cases. I will explain what I mean, and then argue that the response in question is not only unconvincing but actually undermines the representationalist position. (shrink)

Are science and religion compatible when it comes to understanding cosmology (the origin of the universe), biology (the origin of life and of the human species), ethics, and the human mind (minds, brains, souls, and free will)? Do science and religion occupy non-overlapping magisteria? Is Intelligent Design a scientific theory? How do the various faith traditions view the relationship between science and religion? What, if any, are the limits of scientific explanation? What are the most important open questions, problems, or (...) challenges confronting the relationship between science and religion, and what are the prospects for progress? These and other questions are explored in Science and Religion: 5 Questions--a collection of thirty-three interviews based on 5 questions presented to some of the world's most influential and prominent philosophers, scientists, theologians, apologists, and atheists. Contributions by Simon Blackburn, Susan Blackmore, Sean Carroll, William Lane Craig, William Dembski, Daniel C. Dennett, George F.R. Ellis, Owen Flanagan, Owen Gingerich, Rebecca Newberger Goldstein, John F. Haught, Muzaffar Iqbal, Lawrence Krauss, Colin McGinn, Alister McGrath, Mary Midgley, Seyyed Hossein Nasr, Timothy O'Connor, Massimo Pigliucci, John Polkinghorne, James Randi, Alex Rosenberg, Michael Ruse, Robert John Russell, John Searle, Michael Shermer, Victor J. Stenger, Robert Thurman, Michael Tooley, Charles Townes, Peter van Inwagen, Keith Ward, Rabbi David Wolpe. (shrink)

Can new technology enhance purpose-driven, democratic dialogue in groups, governments, and societies? Online Deliberation: Design, Research, and Practice is the first book that attempts to sample the full range of work on online deliberation, forging new connections between academic research, technology designers, and practitioners. Since some of the most exciting innovations have occurred outside of traditional institutions, and those involved have often worked in relative isolation from each other, work in this growing field has often failed to reflect the full (...) set of perspectives on online deliberation. This volume is aimed at those working at the crossroads of information/communication technology and social science, and documents early findings in, and perspectives on, this new field by many of its pioneers. -/- CONTENTS: -/- Introduction: The Blossoming Field of Online Deliberation (Todd Davies, pp. 1-19) -/- Part I - Prospects for Online Civic Engagement -/- Chapter 1: Virtual Public Consultation: Prospects for Internet Deliberative Democracy (James S. Fishkin, pp. 23-35) -/- Chapter 2: Citizens Deliberating Online: Theory and Some Evidence (Vincent Price, pp. 37-58) -/- Chapter 3: Can Online Deliberation Improve Politics? Scientific Foundations for Success (Arthur Lupia, pp. 59-69) -/- Chapter 4: Deliberative Democracy, Online Discussion, and Project PICOLA (Public Informed Citizen Online Assembly) (Robert Cavalier with Miso Kim and Zachary Sam Zaiss, pp. 71-79) -/- Part II - Online Dialogue in the Wild -/- Chapter 5: Friends, Foes, and Fringe: Norms and Structure in Political Discussion Networks (John Kelly, Danyel Fisher, and Marc Smith, pp. 83-93) -/- Chapter 6: Searching the Net for Differences of Opinion (Warren Sack, John Kelly, and Michael Dale, pp. 95-104) -/- Chapter 7: Happy Accidents: Deliberation and Online Exposure to Opposing Views (Azi Lev-On and Bernard Manin, pp. 105-122) -/- Chapter 8: Rethinking Local Conversations on the Web (Sameer Ahuja, Manuel Pérez-Quiñones, and Andrea Kavanaugh, pp. 123-129) -/- Part III - Online Public Consultation -/- Chapter 9: Deliberation in E-Rulemaking? The Problem of Mass Participation (David Schlosberg, Steve Zavestoski, and Stuart Shulman, pp. 133-148) -/- Chapter 10: Turning GOLD into EPG: Lessons from Low-Tech Democratic Experimentalism for Electronic Rulemaking and Other Ventures in Cyberdemocracy (Peter M. Shane, pp. 149-162) -/- Chapter 11: Baudrillard and the Virtual Cow: Simulation Games and Citizen Participation (Hélène Michel and Dominique Kreziak, pp. 163-166) -/- Chapter 12: Using Web-Based Group Support Systems to Enhance Procedural Fairness in Administrative Decision Making in South Africa (Hossana Twinomurinzi and Jackie Phahlamohlaka, pp. 167-169) -/- Chapter 13: Citizen Participation Is Critical: An Example from Sweden (Tomas Ohlin, pp. 171-173) -/- Part IV - Online Deliberation in Organizations -/- Chapter 14: Online Deliberation in the Government of Canada: Organizing the Back Office (Elisabeth Richard, pp. 177-191) -/- Chapter 15: Political Action and Organization Building: An Internet-Based Engagement Model (Mark Cooper, pp. 193-202) -/- Chapter 16: Wiki Collaboration Within Political Parties: Benefits and Challenges (Kate Raynes-Goldie and David Fono, pp. 203-205) -/- Chapter 17: Debian’s Democracy (Gunnar Ristroph, pp. 207-211) -/- Chapter 18: Software Support for Face-to-Face Parliamentary Procedure (Dana Dahlstrom and Bayle Shanks, pp. 213-220) -/- Part V - Online Facilitation -/- Chapter 19: Deliberation on the Net: Lessons from a Field Experiment (June Woong Rhee and Eun-mee Kim, pp. 223-232) -/- Chapter 20: The Role of the Moderator: Problems and Possibilities for Government-Run Online Discussion Forums (Scott Wright, pp. 233-242) -/- Chapter 21: Silencing the Clatter: Removing Anonymity from a Corporate Online Community (Gilly Leshed, pp. 243-251) -/- Chapter 22: Facilitation and Inclusive Deliberation (Matthias Trénel, pp. 253-257) -/- Chapter 23: Rethinking the ‘Informed’ Participant: Precautions and Recommendations for the Design of Online Deliberation (Kevin S. Ramsey and Matthew W. Wilson, pp. 259-267) -/- Chapter 24: PerlNomic: Rule Making and Enforcement in Digital Shared Spaces (Mark E. Phair and Adam Bliss, pp. 269-271) -/- Part VI - Design of Deliberation Tools -/- Chapter 25: An Online Environment for Democratic Deliberation: Motivations, Principles, and Design (Todd Davies, Brendan O’Connor, Alex Cochran, Jonathan J. Effrat, Andrew Parker, Benjamin Newman, and Aaron Tam, pp. 275-292) -/- Chapter 26: Online Civic Deliberation with E-Liberate (Douglas Schuler, pp. 293-302) -/- Chapter 27: Parliament: A Module for Parliamentary Procedure Software (Bayle Shanks and Dana Dahlstrom, pp. 303-307) -/- Chapter 28: Decision Structure: A New Approach to Three Problems in Deliberation (Raymond J. Pingree, pp. 309-316) -/- Chapter 29: Design Requirements of Argument Mapping Software for Teaching Deliberation (Matthew W. Easterday, Jordan S. Kanarek, and Maralee Harrell, pp. 317-323) -/- Chapter 30: Email-Embedded Voting with eVote/Clerk (Marilyn Davis, pp. 325-327) -/- Epilogue: Understanding Diversity in the Field of Online Deliberation (Seeta Peña Gangadharan, pp. 329-358). -/- For individual chapter downloads, go to odbook.stanford.edu. (shrink)

I defend a solution to a long-standing problem with perceptual appearances, brought about by the phenomenon of perceptual constancy. The problem is that in conditions which are non-ideal, yet within the range that perceptual constancy works, we see things veridically despite an “appearance” which is traditionally taken to be non-veridical. For example, a tilted coin is often taken to have an “elliptical appearance”, shadowed surfaces a “darker appearance”. These appearances are puzzling for a number of reasons. I defend and elaborate (...) on an approach taken by Sean Kelly, and earlier by the art historian E.H. Gombrich, according to which we can be tricked by our ability to bring about a kind of Gesltalt shift between different possible perceptual interpretations of a scene. (shrink)

This paper criticises the cosmological argument that Tim O'Connor provides in his book *Theism and Ultimate Explanation*.

FISIOLOGIA DA REPRODUÇÃO BOVINA: 2 - ESTRO E SERVIÇO -/- -/- INTRODUÇÃO -/- -/- A identificação de vacas em cio (estro ou cio) é, sem dúvida, a prática mais importante no manejo da reprodução do rebanho leiteiro. Apesar dos avanços no conhecimento da fisiologia da reprodução a nível celular e molecular, a identificação de vacas em estro continua sendo o problema reprodutivo mais importante e o que mais causa prejuízos econômicos. Na indústria de laticínios no Brasil, seu impacto não foi (...) estimado, porém, a estimativa feita por países como os Estados Unidos onde se perdem 300 milhões de dólares por ano pode dar uma ideia, atribuída apenas à baixa eficiência na detecção de estros. Por que é cada vez mais difícil detectar vacas em estro? A resposta está relacionada aos aspectos intrínsecos da vaca leiteira moderna, associadas as práticas de manejo dos rebanhos atuais, caracterizados por possuírem grande número de vacas nos plantéis. -/- -/- 2.1 Como saber que uma vaca está em cio/estro? -/- -/- O comportamento estral é causado por um aumento no estradiol sérico produzido pelo folículo ovulatório. O aumento do estradiol provoca mudanças de comportamento e modificações na genitália externa e interna. A vaca mostra-se inquieta, sua vocalização aumenta, ela anda mais, tenta montar em outras vacas e aceita montar no touro ou em outra vaca, bem como urinam com mais frequência (micção frequente). A vulva fica levemente inflamada, à palpação retal o útero pode ser visto com tônus ou turgor (duro e contraído) e ao massagear o colo do útero observa-se que sai abundante muco cristalino da vulva. O mecanismo clássico proposto na regulação do estro é baseado principalmente no papel do estradiol; no entanto, estudos recentes indicam que o GnRH pode participar da regulação do estro ao nível do hipotálamo. O estro possui duração entre 8 e 18 horas e a intensidade do mesmo é afetada por fatores ambientais e intrínsecos a vaca moderna (figuras de 1 a 6). -/- -/- -/- Figura 2: A observação do grupo sexualmente ativo facilita a identificação das vacas em estro. -/- Figura 1: As vacas em estro formam grupos ativos (grupo sexualmente ativo) separados do resto das vacas. A conformação desses grupos facilita a observação do estro. -/- -/- A formação de grupos de vacas é um fator ideal para a detecção de vacas em cio, elas ficam juntas e começam a montar uma nas outras, a cheirar a urina de ambas etc. comportamentos que podem ser visualizados de longe pelo tratador e diagnosticado o cio o mais breve possível para o manejo reprodutivo adotado pela propriedade seja para monta natural ou controlada e/ou inseminações artificiais (IA) e artificiais em tempo fixo (IATF). -/- -/- Figura 3: O único comportamento positivo do estro é a aceitação da monta de outra vaca. É frequente que a vaca que realiza a monta também esteja em estro, o que só será afirmado até que ela aceite a monta de outra vaca. -/- -/- Figura 4: Cada monta dura de 5 a 7 segundos -/- Figura 5: A vaca leiteira aceita de 5 a 30 montas distribuídas entre 8 e 18 horas. -/- Figura 6: Além das mudanças comportamentais, os estrogênios causam alterações na genitália interna. Uma delas é a produção de muco cervical, que juntamente com o turgor uterino, constituem os sinais genitais do estro. -/- -/- O cio pode ser dividido em três fases, a inicial, a fase de cio verdadeiro e a fase final. O cio verdadeiro quando é observado, é caracterizado pelo momento em que a vaca aceita claramente a monta. Por sua vez, os sinais de início e final de cio se misturam, apresentam nervosismo e inquietação, cheiram e lambem a vagina e a urina de outras vacas, apoiam a cabeça na garupa de outras fêmeas etc. (figura 7). Uma das sugestões adotadas nas propriedades para facilitar a identificação do cio em um rebanho é realizada pelos funcionários com a utilização de um bastão ou fita de coloração da garupa das vacas. -/- Figura 7: Principais sinais que demonstram que a vaca está entrando em cio. As imagens mostram o início do cio, cio verdadeiro e final do cio. -/- CONTINUA. BAIXE O PDF!!! -/- RESUMO -/- -/- < >Nos Estados Unidos, 300 milhões de dólares são perdidos devido à baixa eficiência na detecção do estro. A eficiência na detecção do estro no Brasil é de 40 a 50%. A meta de eficiência para detecção de estro é > 60%. Com a observação das vacas em dois períodos diários de três horas cada (manhã e tarde), consegue-se uma eficiência na detecção de estro de 80%. Menos de 20 por cento das vacas devem ter um intervalo de serviço duplo e nenhum de mais de 48 dias. A taxa de prenhez é obtida multiplicando-se a eficiência na detecção do estro pela porcentagem de concepção e dividindo por 100 (50 * 30/100 = 15%). A taxa de prenhez em rebanhos norte-americanos é de 15%. Nos Estados Unidos, para cada ponto percentual que diminui a taxa de prenhez, não há mais de US$ 12 a US$ 15 por vaca por ano. No Brasil, para cada ponto percentual que aumenta a taxa de prenhez, na faixa de 15 a 20%, é gerada uma renda anual adicional de $ 190 reais por vaca. Não mais que 25% das vacas devem estar vazias no 150º dia pós-parto. Não mais do que 8% devem as vacas ser cobertas no 250º dia pós-parto. 8% das vacas devem engravidar a cada mês. O estro ocorre 48 a 120 horas após o tratamento com PGF2α. 80% é a precisão na palpação do corpo lúteo. Quatorze dias devem decorrer entre duas injeções de PGF2α. Menos de 25% das vacas incluídas no programa de pré-sincronização devem chegar à IATF. No momento da ovulação, a primeira injeção de GnRH deve ser aplicada entre o quinto e o nono dia do ciclo estral. A inseminação cronometrada é realizada 14-16 horas após a segunda injeção de GnRH. O tratamento com dispositivos intravaginais liberadores de progesterona dura 12 dias. Se a duração do tratamento é menor deve-se injetar PGF2α ao retirá-lo. -/- -/- REFERÊNCIAS BIBLIOGRÁFICAS -/- -/- ATUESTA, Jorge; DIAZA, Angela Gonella. Control hormonal del ciclo estral en bovinos y ovinos. Spei Domus, v. 7, n. 14, 2011. -/- COLAZO, Marcos Germán; MAPLETOFT, Reben. Fisiología del ciclo estral bovino. Ciencia Veterinaria, v. 16, n. 2, p. 31-46, 2017. -/- Fisiologia Clínica do Ciclo Estral de Vacas Leiteiras: Desenvolvimento Folicular, Corpo Lúteo e Etapas do Estro. Belo Jardim: IFPE, 2020. -/- Fisiologia da Reprodução Animal: Ovulação, Controle e Sincronização do Cio. Belo Jardim: IFPE, 2020. -/- DOBSON, H. et al. The high‐producing dairy cow and its reproductive performance. Reproduction in domestic animals, v. 42, p. 17-23, 2007. -/- DO VALLE, Ezequlel Rodrigues. O ciclo estral de bovinos e métodos de controle. EMBRAPA-CNPGC., 1991. -/- FURTADO, Diego Augusto et al. Inseminação artificial em tempo fixo em bovinos de corte. Revista científica eletrônica de medicina veterinária, v. 16, p. 1-25, 2011. -/- GALON, Nadav. The use of pedometry for estrus detection in dairy cows in Israel. Journal of Reproduction and Development, v. 56, n. S, p. S48-S52, 2010. -/- HOPPER, Richard M. (Ed.). Bovine reproduction. John Wiley & Sons, 2014. -/- LOPEZ, H.; SATTER, L. D.; WILTBANK, M. C. Relationship between level of milk production and estrous behavior of lactating dairy cows. Animal reproduction science, v. 81, n. 3-4, p. 209-223, 2004. -/- MACMILLAN, Keith L. Recent advances in the synchronization of estrus and ovulation in dairy cows. Journal of Reproduction and development, v. 56, n. S, p. S42-S47, 2010. -/- MUNIS DE OLIVEIRA, G. Fisiologia da Reprodução Bovina e Métodos de Controle do Ciclo Estral. Trabalho de conclusão do curso de especialização em Reprodução e Produção de Bovinos–UCB. Rio de Janeiro, Brasil, 2006. -/- O'CONNOR, MICHAEL L. Estrus detection. In: Current therapy in large animal theriogenology. WB Saunders, 2007. p. 270-278. -/- RIPPE, Christian A. El ciclo estral. In: Dairy Cattle Reproduction Conference. 2009. p. 111-116. -/- ROELOFS, Judith et al. When is a cow in estrus? Clinical and practical aspects. Theriogenology, v. 74, n. 3, p. 327-344, 2010. -/- VIVEIROS, Ana Tereza de Mendonça. Fisiologia da reprodução de bovinos. Lavras: UFLA, p. 62, 1997. (shrink)

This chapter is a critical discussion of the third chapter of Tim O'Connor's *Theism and Ultimate Explanation*. In this chapter, O'Connor advances the 'existence stage' of his cosmological argument from contingency. I argue that naturalists have good reason to think that on each of the live hypotheses -- infinite regress, brute contingency, brute necessity -- naturalism is preferable to theism.

Abstract: Standing half wave particles at light speed twice in expansion-contraction comprise a static universe where two transverse fields 90° out of phase are the square of distance from each other. The universe has a static concept of time since the infinite universe is a static universe without a beginning or end. The square of distance is a point of reversal in expansion-contraction between the fields as a means to conserve energy. Photons on expansion in the electric field create matter (...) energy while photons on contraction in the magnetic field create light energy and gravitational pull toward the higher frequency energy. Also, the universe with matter has a moving physical concept of time from gravitational pull on expansion-contraction. (shrink)

Abstract: Standing half wave particles at light speed twice in expansion-contraction comprise a static universe where two transverse fields 90° out of phase are the square of distance from each other. The universe has a static concept of time since the infinite universe is a static universe without a beginning or end. The square of distance is a point of reversal in expansion-contraction between the fields as a means to conserve energy. Photons on expansion in the electric field create matter (...) energy while photons on contraction in the magnetic field create light energy and gravitational pull toward the higher frequency energy. Also, the universe with matter has a moving physical concept of time from gravitational pull on expansion-contraction. (shrink)

Abstract: Standing half wave particles at light speed twice in expansion-contraction comprise a static universe where two transverse fields 90° out of phase are the square of distance from each other. The universe has a static concept of time since the infinite universe is a static universe without a beginning or end. The square of distance is a point of reversal in expansion-contraction between the fields as a means to conserve energy. Photons on expansion in the electric field create matter (...) energy while photons on contraction in the magnetic field create light energy and gravitational pull toward the higher frequency energy. Also, the universe with matter has a moving physical concept of time from gravitational pull on expansion-contraction. (shrink)

Timothy O’Connor has recently defended a version of libertarianism that has significant advantages over similar accounts. One of these is an argument that secures indeterminism on the basis of an argument that shows how causal determinism threatens agency in virtue of the nature of the causal relation involved in free acts. In this paper, I argue that while it does turn out that free acts are not causally determined on O’Connor’s view, this fact is merely stipulative and the argument that (...) he presents for this conclusion begs the question. (shrink)

Abstract: Standing half wave particles at light speed twice in expansion-contraction comprise a static universe where two transverse fields 90° out of phase are the square of distance from each other. The universe has a static concept of time since the infinite universe is a static universe without a beginning or end. The square of distance is a point of reversal in expansion-contraction between the fields as a means to conserve energy. Photons on expansion in the electric field create matter (...) energy while photons on contraction in the magnetic field create light energy and gravitational pull toward the higher frequency energy. Also, the universe with matter has a moving physical concept of time from gravitational pull on expansion-contraction. (shrink)