"--Christopher L. Eisgruber, Princeton University "This is a provocative and bracing essay, one that is bound to stimulate much discussion.

The notion that visual attention can operate over visual objects in addition to spatial locations has recently received much empirical support, but there has been relatively little empirical consideration of what can count as an `object' in the ®rst place. We have investi- gated this question in the context of the multiple object tracking paradigm, in which subjects must track a number of independently and unpredictably moving identical items in a ®eld of identical distractors. What types of feature clusters can (...) be tracked in this manner? In other words, what counts as an `object' in this task? We investigated this question with a technique we call target merging: we alter tracking displays so that distinct target and distractor loca- tions appear perceptually to be parts of the same object by merging pairs of items (one target with one distractor) in various ways ± for example, by connecting item locations with a simple line segment, by drawing the convex hull of the two items, and so forth. The data show that target merging makes the tracking task far more dif®cult to varying degrees depending on exactly how the items are merged. The effect is perceptually salient, involving in some conditions a total destruction of subjects' capacity to track multiple items. These studies provide strong evidence for the object-based nature of tracking, con®rming that in some contexts attention must be allocated to objects rather than arbitrary collections of features. In addition, the results begin to reveal the types of spatially organized scene components that can be independently attended as a function of properties such as connectedness, part struc- ture, and other types of perceptual grouping. q 2001 Elsevier Science B.V. All rights reserved. (shrink)

We investigate a simple stochastic model of social network formation by the process of reinforcement learning with discounting of the past. In the limit, for any value of the discounting parameter, small, stable cliques are formed. However, the time it takes to reach the limiting state in which cliques have formed is very sensitive to the discounting parameter. Depending on this value, the limiting result may or may not be a good predictor for realistic observation times.

Approaches to Wittgenstein brings together for the first time the many varied aspects of Wittgenstein's life, philosophy and aesthetic attitudes. It draws from many of his unpublished manuscripts to illuminate his work.

A philosophical analysis of the discourses, practices, and effects of representation in political institutions, focusing on American democracy.

We generalize the Kolmogorov axioms for probability calculus to obtain conditions defining, for any given logic, a class of probability functions relative to that logic, coinciding with the standard probability functions in the special case of classical logic but allowing consideration of other classes of "essentially Kolmogorovian" probability functions relative to other logics. We take a broad view of the Bayesian approach as dictating inter alia that from the perspective of a given logic, rational degrees of belief are those representable (...) by probability functions from the class appropriate to that logic. Classical Bayesianism, which fixes the logic as classical logic, is only one version of this general approach. Another, which we call Intuitionistic Bayesianism, selects intuitionistic logic as the preferred logic and the associated class of probability functions as the right class of candidate representions of epistemic states (rational allocations of degrees of belief). Various objections to classical Bayesianism are, we argue, best met by passing to intuitionistic Bayesianism—in which the probability functions are taken relative to intuitionistic logic—rather than by adopting a radically non-Kolmogorovian, for example, nonadditive, conception of (or substitute for) probability functions, in spite of the popularity of the latter response among those who have raised these objections. The interest of intuitionistic Bayesianism is further enhanced by the availability of a Dutch Book argument justifying the selection of intuitionistic probability functions as guides to rational betting behavior when due consideration is paid to the fact that bets are settled only when/if the outcome bet on becomes known. (shrink)

New Blackfriars, Volume 102, Issue 1101, Page 601-606, September 2021.

Shapiro has recently argued that Dworkin posed a new objection to legal positivism in Law's Empire, to which positivists, he says, have not adequately responded. Positivists, the objection goes, have no satisfactory account of what Dworkin calls “theoretical disagreement” about law, that is, disagreement about “the grounds of law” or what positivists would call the criteria of legal validity. I agree with Shapiro that the critique is new, and disagree that it has not been met. Positivism can not offer an (...) explanation that preserves the “face value” of theoretical disagreements, because the only intelligible dispute about the criteria of legal validity is an empirical or “head count” dispute, i.e., a dispute about what judges are doing, and how many of them are doing it. Positivism, however, has two other explanations for theoretical disagreement, which “explain away” rather than preserve the “face value” disagreement. According to positivists, either theoretical disagreements are disingenuous, in the sense that the parties, consciously or unconsciously, are really trying to change the law, that is, they are trying to say, as Dworkin puts it, “what it should be” not “what the law is”; or they are simply in error, that is, they honestly think there is a fact of the matter about what the grounds of law are, and thus what the law is, in the context of their disagreement, but they are mistaken, because, in truth, there is no fact of the matter about the grounds of law in this instance precisely because there is no convergent practice of behavior among officials constituting a Rule of Recognition on this point. The “Disingenuity” and “Error Theory” accounts of theoretical disagreement are explored, with attention to the theoretical desiderata at stake in choosing between competing explanatory theories. Particular attention is given to the best explanation for Riggs v. Palmer in light of the actual historical context of the decision and other opinions by the Riggs judges in contemporaneous cases. (shrink)

John Burgess has recently argued that Timothy Williamson’s attempts to avoid the objection that his theory of vagueness is based on an untenable metaphysics of content are unsuccessful. Burgess’s arguments are important, and largely correct, but there is a mistake in the discussion of one of the key examples. In this note I provide some alternative examples and use them to repair the mistaken section of the argument.

The interplay between violence, religion, and politics is a central problem for societies and has attracted the attention of important philosophers, including Martin Heidegger, Jacques Derrida, and René Girard. Centuries earlier during the Italian Renaissance, these same problems drew the interest of Niccolò Machiavelli. In Not Even a God Can Save Us Now, Brian Harding argues that Machiavelli’s work anticipates – and often illuminates – contemporary theories on the place of violence in our lives. While remaining cognizant of the (...) historical and cultural context of Machiavelli’s writings, Harding develops Machiavelli’s accounts of sacrifice, truth, religion, and violence and places them in conversation with those of more contemporary thinkers. Including in-depth discussions of Machiavelli’s works The Prince and Discourses on Livy, as well as his Florentine Histories, The Art of War, and other less widely discussed works, Harding interprets Machiavelli as endorsing sacrificial violence that founds or preserves a state, while censuring other forms of violence. This reading clarifies a number of obscure themes in Machiavelli’s writings, and demonstrates how similar themes are at work in the thought of recent phenomenologists. The first book to approach both Machiavellian and contemporary continental thought in this way, Not Even a God Can Save Us Now is a highly original and provocative approach to both the history of philosophy and to contemporary debates about violence, religion, and politics. (shrink)

Though all of the principal features of Rawls's definition of civil disobedience are in varying degrees unacceptable, one of these consists of the fertile but unargued suggestion that civil disobedience is a mode of address. The first half of the paper tests this by construing civil disobedience as a vehicle of non?natural meaning (but not necessarily of linguistic non?natural meaning) and so as operating the Gricean mechanism of a hierarchy of intentions and beliefs. This feature is absent from other definitions (...) but is essential if other kinds of conscientious illegality are to be contrasted. In the second half a definition is arrived at through rejections or modifications of the other Rawlsian conditions and by reference to some recent accounts of force and violence. It is hoped that the definition has the double advantage of being broadly congruent with our intuitions and of supplying a theoretical underpinning for what it includes and excludes. (shrink)

Traces the early years of the philosopher, detailing the roles that his troubled family, his imposing and wealthy father, turn-of-the-century Viennese intellectuals, and his World War I experiences played in the formation of his philosophy.

This paper suggests that liberal democratic governments adopt a reconciliatory approach to conscientious disobedience. Central to this approach is the view – independent of whether conscientious disobedience is always morally justified – that conscientious disobedience is normatively distinct from other criminal acts with similar effects, and such distinction is worthy of acknowledgment by public apparatus and actors. The prerogative applies to both civil and uncivil instances of disobedience, as defined and explored in the paper. Governments and courts ought to take (...) the normative distinction seriously and treat the conscientious disobedients in a more lenient way than they treat ordinary criminals. A comprehensive legislative scheme for governments to deal with prosecution, sentencing, and imprisonment of the conscientious disobedients will be proposed, with the normative and practical benefits of such an approach discussed in detail. (shrink)

Fabi and Goldberg make the important observation that skewed funding priorities in bioethics contribute to the perpetuation of injustice. Through a lens of structural racism, the authors dem...

This case is part of a series of case studies used as an exercise within a program on research ethics education. The case involves research on genetic birth defects in a culturally distinct, closed religious community in which elders speak for the community. The case raises ethical issues of informed consent in such a setting; of collaboration with the community; of conflicts between the researchers’ responsibilities to the community as a whole and to individual subjects; of the impact of the (...) researcher’s findings on the practices and values of the community and issues regarding how the researchers share findings with subjects and how the findings are stored. (shrink)

This volume brings together the central works of recent scholarship on the nature of rights, with contributions by some of the most prominent contemporary theorists in moral, legal, and political philosophy. With approaches ranging from the political to the historical, and from the analytical to the critical, this collection touches on the major conceptual and practical questions of this important field and also offers useful introductions to emerging issues in rights theory.

In lieu of an abstract, here is a brief excerpt of the content:Reviewed by:Consistently Pro-Life: The Ethics of Bloodshed in Ancient Christianity by Rob Arner, and: Christ at the Checkpoint: Theology in the Service of Justice and Peace ed. by Paul Alexander, and: Becoming Nonviolent Peacemakers: A Virtue Ethic for Catholic Social Teaching and US Policy by Eli Sarasan McCarthyBrian D. BerryReview of Consistently Pro-Life: The Ethics of Bloodshed in Ancient Christianity ROB ARNER Eugene, OR: Pickwick, 2010. 136 pp. $15.56Review (...) of Christ at the Checkpoint: Theology in the Service of Justice and Peace EDITED BY PAUL ALEXANDER Eugene, OR: Pickwick, 2012. 182 pp. $19.80Review of Becoming Nonviolent Peacemakers: A Virtue Ethic for Catholic Social Teaching and US Policy ELI SARASAN MCCARTHY Eugene, OR: Pickwick, 2012. 259 pp. $27.00In Consistently Pro-Life, Rob Arner (who teaches at Chestnut Hill College in Philadelphia) makes the case that Christians should not kill other human beings—regardless of the circumstances. Taking as his point of departure the vigilante killing of abortion doctor George Tiller in Wichita, Kansas, in 2009, he argues not only that abortion is always morally impermissible but so also is [End Page 217] the murder of abortion doctors and the use of the death penalty to punish those who murder them. In addition, he turns to the early church fathers to contend that, prior to Constantine, “without exception, the church strongly condemned the taking of human life in any form whatsoever”—thus rejecting abortion and infanticide, the blood sport of the Roman games, suicide, and killing in war (120). This was because the New Testament witness to Jesus and his death on the cross required early Christians to view “the means as just as important, if not more important, than the ends” (xiii).Arner supplements this deontological argument for Christian pacifism, which he learned from John Howard Yoder, with a brief consideration of the virtue of patience cultivated in the early churches, reflecting the influence of Stanley Hauerwas on his thought. This “cardinal virtue” connoting “longsuffering, forbearance, patient endurance”—as found in Jesus’s teaching in the Sermon on the Mount (Mt 5:38–48)—enabled early Christians to practice non-violent resistance “deferring personal revenge in favor of God’s vindicating justice” (98). If Christians were to adopt this same consistently pro-life ethic today, argues Arner, it would “lead to greater healing and peace in our blood-soaked world” (121). The book closes with three appendices—one of which is a chart of terminology that dehumanizes vulnerable victims, including unborn human beings. Unfortunately, the book does not have an index.Christ at the Checkpoint, edited by Paul Alexander (professor of Christian ethics and public policy at the Palmer Theological Seminary of Eastern University), includes thirteen plenary addresses delivered at a conference on the Arab-Israeli conflict organized by Palestinian Evangelical Christians at Bethlehem Bible College in March 2010. Almost all of the contributors to this volume—including biblical scholars, theologians, ethicists, pastors, activists, and others—criticize the ideology of Christian Zionism and its support of a theology of dispensationalism that, in their view, distorts the scriptures and fosters violence rather than reconciliation between the Israelis and the Palestinians. In his own presentation titled “What Can Pentecostals and Charismatics Do for Peace with Justice in Israel and Palestine?,” Alexander—who describes himself as a former “one-sided” Christian Zionist who later discovered the writings of Yoder and Hauerwas—appeals to Jesus’s teaching in the Sermon on the Mount and urges Pentecostals to create church communities “that cultivate persons of character and conviction, who through habits, practices, and action live out the core of our faith” (69). Along with being faithful to the “greater challenges” of love, mercy, compassion, and forgiveness, he argues that they should publicly declare that Jesus does not want Israel to continue the occupation of Palestine, and they should engage in the “easier tasks” of promoting human rights, lending support to United Nations Resolutions, and working toward a two-state solution (72). “The time has come in human history,” writes Alexander, “for Pentecostals to speak and act prophetically regarding this present injustice … [End Page 218] and to use every nonviolent weapon in our arsenal—stories, preaching... (shrink)

In Reasons without Persons, I defend a time-slice-centric conception of rationality, on which the locus of rationality is the time-slice rather than the temporally extended agent, and there are no distinctively diachronic or intra-personal requirements of rationality. Here I reply to criticisms from Doring and Eker, Snedegar, and Lenman, who object to the motivations for and implications of time-slice rationality.