In 1993, Professor of Jurisprudence, Ronald Dworkin of Oxford University and Professor of Law at New York University, delivered the Georgetown Law Center’s thirteenth Annual Philip A. Hart Memorial Lecture: "Life’s Dominion: An Argument About Abortion and Euthanasia." Dworkin is Professor of Philosophy and Frank Henry Sommer Professor of Law at New York University. He received B.A. degrees from both Harvard College and Oxford University, and an LL.B. from Harvard Law School and clerked for Judge Learned Hand. He was (...) associated with a law firm in New York (Sullivan and Cromwell) and was a professor of law at Yale University Law School from 1962-1969. He has been Professor of Jurisprudence at Oxford and Fellow of University College since 1969. He has a joint appointment at Oxford and at NYU where he is a professor both in the Law School and the Philosophy Department. He is a Fellow of the British Academy and a member of the American Academy of Arts and Sciences. Professor Dworkin is the author of many articles in philosophical and legal journals as well as articles on legal and political topics in the New York Review of Books. He has written Taking Rights Seriously (1977), A Matter of Principle (1985), Law’s Empire (1986), Philosophical Issues in Senile Dementia (1987), A Bill of Rights for Britain (1990), Life’s Dominion (1993), and Freedom’s Law (1996). (shrink)

In «Naturalized Epistemology and the Law of Evidence Revisited», the original target article for the various refutations that I comment on here, I revisited through a slightly different lens the subject of the article that I coauthored with Brian Leiter close to twenty years ago. That article has prompted four responses from Professors Pardo, Spellman, Muffato, and Enoch. Professors Pardo and Spellman basically accept the implications of the original article and offer useful but friendly amendments. Prof. Muffato apparently does not (...) want to dispute over my ground and so changes the subject, and in doing so offers a number of interesting points. Only the fourth, Prof. Enoch, has the same doubts about the utility of my original article as I do of the genre that gave rise to it. I can thus be quite brief in discussing professors Pardo, Spellman, and Muffato, but it will take bit more effort to lay out the limits of Prof. Enoch’s analysis. (shrink)

Politics in America are polarized and trivialized, perhaps as never before. In Congress, the media, and academic debate, opponents from right and left, the Red and the Blue, struggle against one another as if politics were contact sports played to the shouts of cheerleaders. The result, Ronald Dworkin writes, is a deeply depressing political culture, as ill equipped for the perennial challenge of achieving social justice as for the emerging threats of terrorism. Can the hope for change be realized? (...) Dworkin, one the world's leading legal and political philosophers, identifies and defends core principles of personal and political morality that all citizens can share. He shows that recognizing such shared principles can make substantial political argument possible and help replace contempt with mutual respect. Only then can the full promise of democracy be realized in America and elsewhere. Dworkin lays out two core principles that citizens should share: first, that each human life is intrinsically and equally valuable and, second, that each person has an inalienable personal responsibility for identifying and realizing value in his or her own life. He then shows what fidelity to these principles would mean for human rights, the place of religion in public life, economic justice, and the character and value of democracy. Dworkin argues that liberal conclusions flow most naturally from these principles. Properly understood, they collide with the ambitions of religious conservatives, contemporary American tax and social policy, and much of the War on Terror. But his more basic aim is to convince Americans of all political stripes--as well as citizens of other nations with similar cultures--that they can and must defend their own convictions through their own interpretations of these shared values. (shrink)

We revisit Naturalized Epistemology and the Law of Evidence, published twenty years ago. The evolution of the relative plausibility theory of juridical proof is offered as evidence of the advantage of a naturalized approach to the study of the field and law evidence. Various alternative explanations of aspects of juridical proof from other disciplines are examined and their shortcomings described. These competing explanations are similar in their reductive, a priori approaches that are at odds with an empirically oriented naturalized approach. (...) The shortcomings of the various a priori approaches are driven by their common methodological commitments to employing weird hypotheticals to engage in intuition mining about the American legal systems that in turn ignore important aspects of the actual legal systems and consistently make impossible epistemological demands. As a result, both their descriptions of and prescriptions for American legal systems are implausible, unlike the relative plausibility theory. (shrink)

Religious atheism? -- The universe -- Religious freedom -- Death and immortality.

Over the centuries, magicians have developed extensive knowledge about the manipulation of the human mind—knowledge that has been largely ignored by psychology. It has recently been argued that this knowledge could help improve our understanding of human cognition and consciousness. But how might this be done? And how much could it ultimately contribute to the exploration of the human mind? We propose here a framework outlining how knowledge about magic can be used to help us understand the human mind. Various (...) approaches—both old and new—are surveyed, in terms of four different levels. The first focuses on the methods in magic, using these to suggest new approaches to existing issues in psychology. The second focuses on the effects that magic can produce, such as the sense of wonder induced by seeing an apparently impossible event. Third is the consideration of magic tricks—methods and effects together—as phenomena of scientific interest in their own right. Finally, there is the organization of knowledge about magic into an informative whole, including the possibility of a science centered around the experience of wonder. (shrink)

We show that early vision can use monocular cues to rapidly complete partially-occluded objects. Visual search for easily detected fragments becomes difficult when the completed shape is similar to others in the display; conversely, search for fragments that are difficult to detect becomes easy when the completed shape is distinctive. Results indicate that completion occurs via the occlusion-triggered removal of occlusion edges and linking of associated regions. We fail to find evidence for a visible filling-in of contours or surfaces, but (...) do find evidence for a "functional" filling-in that prevents the constituent fragments from being rapidly accessed. As such, it is only the completed structures—and not the fragments themselves—that serve as the basis for rapid recognition. (shrink)

It is suggested that the relationship between visual attention and conscious visual experience can be simplified by distinguishing different aspects of both visual attention and visual experience. A set of principles is first proposed for any possible taxonomy of the processes involved in visual attention. A particular taxonomy is then put forward that describes five such processes, each with a distinct function and characteristic mode of operation. Based on these, three separate kinds—or possibly grades—of conscious visual experience can be distinguished, (...) each associated with a particular combination of attentional processes. (shrink)

Our visual experience of the world is one of diverse objects and events, each with particular colors, shapes, and motions. This experience is so coherent, so immediate, and so effortless that it seems to result from a single system that lets us experience everything in our field of view. But however appealing, this belief is mistaken: there are severe limits on what can be visually experienced. -/- For example, in a display for air-traffic control it is important to track all (...) moving items. For a single item, this can be done without problem. Three or four can also be tracked, although some degree of effort may be needed. As the number is increased further, accurate tracking becomes more and more difficult—and eventually, impossible. Performance is evidently affected by a factor within the observer which enables certain kinds of perception to occur, but is limited in some way. This factor is generally referred to as attention. -/- At various times, attention has been associated with clarity of perception, intensity of perception, consciousness, selection, or the allocation of a limited “resource” enabling various operations (see Hatfield, 1998). During the past several decades, considerable progress has been achieved by focusing on the idea of selection (Broadbent, 1982). In particular, attention can be productively viewed as contingently selective processing. This can be embodied in various ways by various processes—there need not be a single quantity identified with all forms of attention, or a single site where it operates (Allport, 1993; Tsotsos, 2011). Although “paying attention” is often considered to be a unitary operation, it may simply refer to the control of one or more selective processes, ideally in a co-ordinated way. While this view has some cost in terms of conceptual simplicity, it can help make sense of a large set of phenomena. -/- This article surveys several of the major issues in our understanding of attention and how it relates to perception. It focuses on vision, since many—if not all—considerations are similar for all sensory modalities, and the level of understanding achieved in this domain is currently the most advanced. (shrink)

Secularization has accelerated. From 1981 to 2007, most countries became more religious, but from 2007 to 2020, the overwhelming majority became less religious. For centuries, all major religions encouraged norms that limit women to producing as many children as possible and discourage any sexual behavior not linked with reproduction. These norms were needed when facing high infant mortality and low life expectancy but require suppressing strong drives, and are rapidly eroding. These norms are so strongly linked with religion that abandoning (...) them undermines religiosity. Religion became pervasive because it was conducive to survival, encouraged sharing when there was no social security system, and it is conducive to mental health and coping with insecure conditions. People need coherent belief systems, but religion is declining. What comes next? The Nordic countries have consistently been at the cutting edge of cultural change. Protestantism left an enduring imprint, but the 20th Century welfare added universal health coverage, high levels of state support for education, welfare spending, child care, pensions and an ethos of social solidarity. These countries are also characterized by rapidly declining religiosity. Does this portend corruption and nihilism? Apparently not. These countries lead the world on numerous indicators of a well-functioning society, including economic equality, gender equality, low homicide rates, subjective well-being, environmental protection and democracy. They have become less religious, but their people have high levels of interpersonal trust, tolerance, honesty, social solidarity and commitment to democratic norms. The decline of religiosity has far-reaching implications. This book explores what comes next. (shrink)

Disturbed by these acrimonious arguments, the authors - former colleagues and university-press board members - embarked on an ambitious project to reexamine a number of major literary and philosophical works dealing with the liberal arts and education. With their discussions ranging from Plato to Rousseau, from Cicero to Vico, from Erasmus to Matthew Arnold, Sousa and Weinsheimer offer not a history of education philosophy but an examination of the present.

Despite both positive and negative perceptions of the current state of higher education, the contemporary debate over what it is to be a university is limited. Most of all, it is limited imaginatively. The range of imagined options is narrow. The imagination has not been given anything even approaching a wide scope. As a result, our sense as to what a university could be and could become in the modern age is itself impoverished. If we are seriously to develop a (...) wide range of ideas of the university that is adequate to the challenges of the modern world, the imagination itself needs to be freed. Imagining the University seeks to address each of these sets of issues and will do so by first, identifying a very wide range of ideas of the university as it is now unfolding and could become; secondly, by evaluating those conceptions of the university with a classification of ideas of the university; and thirdly, by reflecting on the imagination itself, its current impoverishment and its possibilities. Whether studying, researching or deciding policy, this book is vital reading to all those involved in the planning and delivery of higher education. (shrink)

Environmental ethics is the study of the ethical relationships between human beings and the natural environment, including the nonhuman individuals that populate and constitute it. It involves developing a proper understanding of the human–nature relationship, identifying the goods and values that are part of or emerge from that relationship, determining the norms that those goods and values justify, and applying those norms to generate guidance on environmental issues and interactions. Environmental virtue ethics is that part of environmental ethics that concerns (...) character. The core questions of environmental virtue ethics are these:. (shrink)

In this paper I explore the extent to which a perspectival understanding of scientific knowledge supports forms of “scientific pluralism.” I will not initially attempt to formulate a general characterization of either perspectivism or scientific pluralism. I assume only that both are opposed to two extreme views. The one extreme is a (monistic) metaphysical realism according to which there is in principle one true and complete theory of everything. The other extreme is a constructivist relativism according to which scientific claims (...) about any reality beyond that of ordinary experience are merely social conventions. (shrink)

Traditionally, vision science and information/data visualization have interacted by using knowledge of human vision to help design effective displays. It is argued here, however, that this interaction can also go in the opposite direction: the investigation of successful visualizations can lead to the discovery of interesting new issues and phenomena in visual perception. Various studies are reviewed showing how this has been done for two areas of visualization, namely, graphical representations and interaction, which lend themselves to work on visual processing (...) and the control of visual operations, respectively. The results of these studies have provided new insights into aspects of vision such as grouping, attentional selection and the sequencing of visual operations. More generally yet, such results support the view that the perception of visualizations can be a useful domain for exploring the nature of visual cognition, inspiring new kinds of questions as well as casting new light on the limits to which information can be conveyed visually. (shrink)

The puzzle arises because propositions of law seem to be descriptive—they are about how things are in the law, not about how they should be—and yet it has proved extremely difficult to say exactly what it is that they describe. Legal positivists believe that propositions of law are indeed wholly descriptive: they are in fact pieces of history. A proposition of law in their view, is true just in case some event of a designated law-making kind has taken place, and (...) other wise not. This seems to work reasonably well in very simple cases. If the Illinois legislature enacts the words "No will shall be valid without three witnesses, "then the proposition of law, that in Illinois will needs three witnesses, seems to be true only in virtue of that historical event.But in more difficult cases the analysis fails. Consider the proposition that a particular affirmative action scheme is constitutionally valid. If that is true, it cannot be so just in virtue of the text of the Constitution and the fact of prior court decisions, because reasonable lawyers who know exactly what the constitution says and what the courts have done may yet disagree whether it is true. What are the other possibilities? One is to suppose that controversial propositions f law, like the affirmative action statement, are not descriptive at all but are rather expressions of what the speaker wants the law to be.Another is more ambitious: controversial statements are attempts to describe some pure objective or natural law, which exits in virtue of objective moral truth rather than historical decision. Both these projects take some legal statements, at least, to be purely evaluative as distinct from descriptive: they express either what the speaker prefers—his personal politics—or what he believes is objectively required b the principles of an ideal political morality. Neither of these projects is plausible because someone who says that a particular untested affirmative action plan is constitution does mean to describe the law as it is rather than as he wants it to be or thinks that, by the best moral theory, it should be. He might, indeed, say that the regrets that the plan is constitutional and thinks that, according to the best moral theory, it ought not to be.There is a better alternative: propositions of law are not simply descriptive of legal history, in a straightforward way, nor are they simply evaluative in some way divorced from legal history. They are interpretive of legal history, which combines elements of both description and evaluation but is different from both. This suggestion will be congenial, at least at first blush, to many lawyers and legal philosophers. They are used to saying that law is a matter of interpretation; but only, perhaps because they understand interpretation in a certain way. When a statute is unclear on some point, because some crucial term is vague or because a sentence is ambiguous, lawyers say that the statute must be interpreted, and they apply what they call "techniques of statutory construction." Most of the literature assumes that interpretation of a particular document is a matter of discovering what its authors meant to say in using the words they did. But lawyers recognize that on many issues the author had no intention either way and that on others his intention cannot be discovered. Some lawyers take a more skeptical position. They say that whenever judges pretend they are discovering the intention behind some piece of legislation, this is simply a smoke screen behind which the judges impose their own view of what the statute should have been.Ronald Dworkin, professor of jurisprudence at Oxford University, is the author of Taking Rights Seriously and editor of The Philosophy of Law. (shrink)

All these specialist aspects of one life are different facets of the intellectual diamond which scintillates in the huge quarry of The Bertrand Russell Archives at McMaster University, Hamilton, Ontario. This is the quintessential man, the bundle of contradictions passionately dedicated to intellect, at times carrying the rational argument to irrational extremes; the natural-born emotional adventurer forever hampered by orphaned youth and too-early marriage. This Russell in the round is greater than the sum of his constituent parts, a man of (...) epic proportions, struggling through a lifetime beset with frustration and near-disaster; in youth the constitutional sceptic, in old age the sometimes splendid figure with "courage never to submit or yield.". (shrink)

This paper is a contribution to that part of science studies known as 'the cognitive study of science'. The general goal of such studies is to understand cogni-.

Adopting the stage metaphor suggested in Brown’s review, and treating Scientific perspectivism as a play in five acts, I respond to his review as a playwright might respond to a generally favorable review. Taking the reader behind the stage door, I discuss the playwright’s intentions for each act, paying special attention to the expected audience for the play as a whole. The result, therefore, supplements the review from the standpoint of the playwright. It also provides answers to some of the (...) reviewer’s questions.Keywords: Matthew Brown; Scientific perspectivism. (shrink)

Many scholars believe “On a New List of Categories” is a metaphysical or transcendental deduction. The present essay will argue that Peirce derives the categories by induction and validates their order by prescision. Then the article shall solicit aid from Peirce’s early and later writings to explain how the new way to list the categories can serve as a genealogy of signification: how the different types of term, proposition, and argument emerge in the process of reasoning as the different types (...) of signs. Thus, the genealogy of signification would then qualify as a phenomenology of logic as a science of semiotics. Such a science of semiotics will have three types of comparison corresponding to the sign-relation in illation: namely, uniparance, diaparance, and comparance. Then the three types of comparison will occasion three types of relative in different types of propositions: namely, concurrents, disquiparants, and equiparants. Finally, the three types of relative will occasion the different types of sign corresponding to the different types of term: namely, icons, indices, and symbols. With this classification, there is then an explanation of how the process of reasoning is a semiotic process with three forms of valid argument: namely, hypothesis, induction, and deduction. (shrink)

The part that the university plays is increasingly of external and economic value, ignoring the importance of the value of knowledge in itself. By analyzing the university's current relationship with knowledge, this book tackles the problem head-on. It considers how the concept of knowledge can be reclaimed in an era of post truth and alternative fact, provides conceptual tools for people to think and debate about knowledge and education in new ways and offers a clear focus for the future development (...) of academia. This fascinating book is recommended reading to anyone engaged with the idea of rethinking universities in the 21st century. (shrink)

Understanding the University constitutes the final volume in a trilogy - the first two books having been Being a University (2010) and Imagining the University (2012) - and represents the trilogy's ultimate aims and endeavours. The three volumes together offer a unique attempt at a fairly systematic and exhaustive level to map out just what it might be seriously to understand the extraordinarily complex entity that is known across the world as 'the university'. Through examination of the conditions and possibilities (...) underlying and affecting universities, this work offers an understanding of specific ideas of the university which can inform policies, strategies and practices in relation to the university. This book is a must read for leaders and senior managers in universities, as well as those undertaking postgraduate studies in the policy and practice of higher education. (shrink)

For scatterplots with gaussian distributions of dots, the perception of Pearson correlation r can be described by two simple laws: a linear one for discrimination, and a logarithmic one for perceived magnitude (Rensink & Baldridge, 2010). The underlying perceptual mechanisms, however, remain poorly understood. To cast light on these, four different distributions of datapoints were examined. The first had 100 points with equal variance in both dimensions. Consistent with earlier results, just noticeable difference (JND) was a linear function of the (...) distance away from r = 1, and the magnitude of perceived correlation a logarithmic function of this quantity. In addition, these laws were linked, with the intercept of the JND line being the inverse of the bias in perceived magnitude. Three other conditions were also examined: a dot cloud with 25 points, a horizontal compression of the cloud, and a cloud with a uniform distribution of dots. Performance was found to be similar in all conditions. The generality and form of these laws suggest that what underlies correlation perception is not a geometric structure such as the shape of the dot cloud, but the shape of the probability distribution of the dots, likely inferred via a form of ensemble coding. It is suggested that this reflects the ability of observers to perceive the information entropy in an image, with this quantity used as a proxy for Pearson correlation. (shrink)

Scientific realism is a doctrine that was both in and out of fashion several times during the twentieth century. I begin by noting three presuppositions of a succinct characterization of scientific realism offered initially by the foremost critic in the latter part of the century, Bas van Fraassen. The first presupposition is that there is a fundamental distinction to be made between what is “empirical” and what is “theoretical”. The second presupposition is that a genuine scientific realism is committed to (...) their being “a literally true story of what the world is like”. The third presupposition is that there are methods for justifying a belief in the empirical adequacy of a theory which do not also suffice to justify beliefs in its literal truth. Each of these presuppositions raises a number of problems, some of which are quite old and others rather newer. In each case, I briefly review some of the old problems and then elaborate the newer problems. (shrink)

My concern is with the possible implications of research in developmental psychology for understanding the workings of modern science. I agree both with Gopnik's general naturalistic orientation and with her more specific claims about scientists as cognitive agents. Neither the formal structure of propositions nor the social structure of scientific communities provides sufficient resources for the understanding we seek. So I agree that the empirical study of human cognition is not only relevant, but necessary, for understanding how science works.

The aesthetic appreciation of both art and nature is often, in fact, judged to be more – and less – serious. For instance, both natural objects and art objects can be hastily and unthinkingly perceived, and they can be perceived with full and thoughtful attention. In the case of art, we are better equipped to sift the trivial from the serious appreciation; for the existence of a corpus, and a continuing practice, of criticism of the arts – for all their (...) internal disputatiousness – furnishes us with relevant criteria. In the case of nature, we have far less guidance. Yet it must matter, there too, to distinguish trivial from serious encounters. When we seek to defend areas of “outstanding natural beauty” against depredations, it matters greatly what account we can give of the appreciation of that beauty: how its value can be set alongside competing and vociferously promoted values involved in industry, commerce and urban expansion. If we wish to attach very high value to the appreciation of natural beauty, we must be able to show that more is involved in such appreciation than the pleasant, unfocused enjoyment of a picnic place, or a fleeting and distanced impression of countryside through a touring-coach window, or obligatory visits to standard viewpoints or snapshot-points.That there is much work to be done on this subject is of course due to the comparative neglect of natural beauty in recent and fairly recent aesthetics. (shrink)

Technology shapes every aspect of human experience and it is the primary driver of social and ecological change. Given this, it is surprising that we spend so little time studying, analyzing, and evaluating new technologies. Occasionally, an issue grabs public attention--for example, the use of human embryonic stem cells in medical research or online file sharing of music and movies. However, these are the exceptions. For the most part, we enthusiastically embrace each new technology and application with little critical reflection (...) on how it will impact our lives and our world. What is more, when an issue raised by an emerging technology is attended to, we often lack the language, concepts, and critical perspectives to thoroughly address it. The aim of this textbook is to introduce students and other readers to the ethical issues associated with a broad array of emerging technologies--including nanotechnology, synthetic genomics, robotics, genetic engineering, geoengineering, synthetic meat, virtual reality, information technologies, sex selection, and many more--and to help them develop analytical skills and perspectives for effectively evaluating novel technologies and applications. (shrink)

Rensink, O’Regan, and Clark (1997) drew attention to the phenomenon of change blindness, in which even large changes can be difficult to notice if made during the appearance of motion transients elsewhere in the image. This article provides a sketch of the events that inspired that article as well as its subsequent impact on psychological science and on society at large.

This paper explores the extent to which a scientific framework for visualization might be possible. It presents several potential parts of a framework, illustrated by application to the visualization of correlation in scatterplots. The first is an extended-vision thesis, which posits that a viewer and visualization system can be usefully considered as a single system that perceives structure in a dataset, much like "basic" vision perceives structure in the world. This characterization is then used to suggest approaches to evaluation that (...) take advantage of techniques used in vision science. Next, an optimal-reduction thesis is presented, which posits that an optimal visualization enables the given task to be reduced to the most suitable operations in the extended system. A systematic comparison of alternative designs is then proposed, guided by what is known about perceptual mechanisms. It is shown that these elements can be extended in various ways—some even overlapping with parts of vision science. As such, a science of some kind appears possible for at least some parts of visualization. It would remain distinct from design practice, but could nevertheless assist with the design of visualizations that better engage human perception and cognition. (shrink)

As observers, we generally have a strong impression of seeing everything in front of us at any moment. But compelling as it is, this impression is false – there are severe limits to what we can consciously experience in everyday life. Much of the evidence for this claim has come from two phenomena: change blindness (CB) and inattentional blindness (IB). -/- CB refers to the failure of an observer to visually experience changes that are easily seen once noticed. This can (...) happen even if the changes are large, constantly repeat, and the observer has been informed that they will occur. A related phenomenon is IB – the failure to visually experience an object or event when attention is directed elsewhere. For example, observers may fail to notice an unexpected object that enters their visual field, even if this object is large, appears for several seconds, and has important consequences for the selection of action. -/- Both phenomena involve a striking failure to report an object or event that is easily seen once noticed. As such, both are highly counterintuitive, not only in the subjective sense that observers have difficulty believing they could fail so badly at seeing but also in the objective sense that these findings challenge many existing ideas about how we see. But as counterintuitive as these phenomena are, progress has been made in understanding them. Indeed, doing so has allowed us to better understand the limitations of human perception in everyday life and to gain new insights into how our visual systems create the picture of the world that we experience each moment our eyes are open. (shrink)

Four experiments investigated the extent to which abstract quantitative information can be conveyed by basic visual features. This was done by asking observers to estimate and discriminate Pearson correlation in graphical representations where the first data dimension of each element was encoded by its horizontal position, and the second by the value of one of its visual features; perceiving correlation then requires combining the information in the two encodings via a common abstract representation. Four visual features were examined: luminance, color, (...) orientation, and size. All were able to support the perception of correlation. Indeed, despite the strikingly different appearances of the associated stimuli, all gave rise to performance that was much the same: just noticeable difference was a linear function of distance from complete correlation, and estimated correlation a logarithmic function of this distance. Performance differed only in regards to the level of noise in the feature, with these values compatible with estimates of channel capacity encountered in classic experiments on absolute perceptual magnitudes. These results suggest that quantitative information can be conveyed by visual features that are abstracted at relatively low levels of visual processing, with little representation of the original sensory property. It is proposed that this is achieved via an abstract parameter space in which the values in each perceptual dimension are normalized to have the same means and variances, with perceived correlation based on the shape of the joint probability density function of the resultant elements. (shrink)