This paper presents a moral argument in support of the view that the mind is a nonphysical object. It is intuitively obvious that we, the bearers of conscious experiences, have an inherent value that is not reducible to the value of our conscious experiences. It remains intuitively obvious that we have inherent value even when we represent ourselves to have no physical bodies whatsoever. Given certain assumptions about morality and moral intuitions, this implies that the bearers of conscious experiences—the objects (...) possessing inherent value—are not physical objects. This moral evidence is corroborated by introspective evidence. (shrink)

Citation: Braun G, Hellwig MK, Byrnes WM (2007) Global Climate Change and Catholic Responsibility: Facts and Faith Response. Journal of Catholic Social Thought 4(2): 373-401. Abstract: The scientific evidence is now overwhelming that human activity is causing the Earth’s atmosphere to grow hotter, which is leading to global climate change. If current rates of greenhouse gas (GHG) emissions continue, it is predicted that there will be dramatic changes, including flooding, more intense heat waves and storms, and an increase in disease. (...) Indigenous peoples and the poor will be most severely affected, as will Earth’s wild animals and plants, a quarter of which could become extinct in fifty years. We urgently need to switch to renewable (non-GHG emitting) energy sources, and try to live in a simpler, more sustainable way. In this article, a renewable energy expert, a biochemist, and a theologian have come together to describe the situation in which we find ourselves, and present ideas for a solution that incorporates Catholic social teaching. (shrink)

Benatar’s central argument for antinatalism develops an asymmetry between the pain and pleasure in a potential life. I am going to present an alternative route to the antinatalist conclusion. I argue that duties require victims and that as a result there is no duty to create the pleasures contained within a prospective life but a duty not to create any of its sufferings. My argument can supplement Benatar’s, but it also enjoys some advantages: it achieves a better fit with our (...) intuitions; it does not require us to acknowledge that life is a harm, or that a world devoid of life is a good thing; and it is easy to see why it does not have any pro-mortalist implications. (shrink)

Gerald Harrison has recently argued the evidential problem of evil can be resolved if we assume the moral facts are identical to God’s commands or favorings. On a theistic metaethics, the moral facts are identical to what God commands or favors. Our moral intuitions reflect what God commands or favors for us to do, but not what God favors for Herself to do. Thus, on Harrison’s view, while we can know the moral facts as they pertain to (...) humans, we cannot know the moral facts as they pertain to God. Therefore, Harrison argues, the evidential problem of evil inappropriately assumes God to be intuitively moral, when we have no reason to suppose a perfectly good being would match the expectations provided by our moral intuitions. Harrison calls his view a new form of skeptical theism. In response, I show Harrison’s attempt to dissolve the problem of evil exacerbates well-known skeptical consequences of skeptical theism. Harrison’s new skeptical theism leaves us with problems motivating a substantive religious life, the inability to provide a variety of theological explanations, and, despite Harrison’s comments to the contrary, worsens problems having to do with the possibility of divine deception. (shrink)

In this paper we examine to what extent the lengths of the links in an animated articulated figure can be changed without the viewer being aware of the change. This is investigated in terms of a framework that emphasizes the role of attention in visual perception. We conducted a set of five experiments to establish bounds for the sen-sitivity to changes in length as a function of several parameters and the amount of attention available. We found that while length changes (...) of 3% can be perceived when the relevant links are given full attention, changes of over 20% can go unnoticed when attention is not focused in this way. These results provide general guidelines for algorithms that produce or process character motion data and also bring to light some of the potential gains that stand to be achieved with attention-based algorithms. (shrink)

Ex Machina is a 2014 science-fiction film written and directed by Alex Garland, centered around the creation of a human-like artificial intelligence (AI) named Ava. The plot focuses on testing Ava for consciousness by offering a unique reinterpretation of the Turing Test. The film offers an excellent thought experiment demonstrating the consequences of various approaches to a potentially conscious AI. In this paper, I will argue that intelligence testing has significant epistemological shortcomings that necessitate an ethical approach not reliant on (...) ontological commitments. As such, we should be prepared to treat AI as though it is a living being that is deserving of corresponding moral obligations. For a sufficiently human-like AI, such as Ava, I will argue that socio-relational ethics is the best starting point in order to nurture the machine towards ethical proclivities, as evident by the consequences of the characters’ behavior throughout the film. I conclude that intelligence testing is an insufficient determinant of machine ethics, that the project of machine ethics should focus as much on how we treat AI as how AI treats us, and that from a consequentialist perspective it is better to treat machines ethically before they gain consciousness rather than after. (shrink)

By definition, pain is a sensory and emotional experience that is felt in a particular part of the body. The precise relationship between somatic events at the site where pain is experienced, and central processing giving rise to the mental experience of pain remains the subject of debate, but there is little disagreement in scholarly circles that both aspects of pain are critical to its experience. Recent experimental work, however, suggests a public view that is at odds with this conceptualisation. (...) By demonstrating that the public does not necessarily endorse central tenets of the “mental” view of pain (subjectivity, privacy, and incorrigibility), experimental philosophers have argued that the public holds a more “body-centric” view than most clinicians and scholars. Such a discrepancy would have important implications for how the public interacts with pain science and clinical care. In response, we tested the hypothesis that the public is capable of a more “mind-centric” view of pain. Using a series of vignettes, we demonstrate that in situations which highlight mental aspects of pain the public can, and does, recognize pain as a mental phenomenon. We also demonstrate that the public view is subject to context effects, by showing that the public’s view is modified when situations emphasizing mental and somatic aspects of pain are presented together. (shrink)

Water is a finite resource held in common by the community yet coveted by individuals and special interests. The water management field is filled with disputes about water allocation, rights, and pollution. Environmental ethics is a basis for equitable water policy making in Delaware. The resource allocation dilemma is examined in relation to conflicting objectives imposed by a market economy between individual self-interests and community environmental well being. Two forms of water law are practiced in the USA—eastern riparianrights and western (...) prior appropriation. Both forms seek an ethical balance to resolve conflicts and protect individual water rights while protecting downstream users (the common good). Delaware Valley case studies discuss how environmental ethics can help the water policy specialist make difficult decisions during conflicts. Surveys polls indicate that 81 percent have values supportive of a balance between the economy and environment, or pro-environment, indicating that an environmental ethic is central to decisions concerning water policy. (shrink)

I briefly chart the position Einstein came to on nuclear weapons. Then I defend that position against Matchett's idea that Einstein behaved as a pop scientist and intervened ignorantly on an issue of wider concern.

Agency is an amazing thing: it transduces cognitivity into causality, it makes thought real. How it does so has been a matter of considerable dispute, the resolution of which has been hampered by moral complications. The supposition of a rational basis for morality can play an essential role in clarifying agency by providing a ground for legitimizing the objects of desire and the motivation they provide. The four-stage model of agency presented here – deliberation, calculation, intention, and enactment – emerges (...) when the moral concerns regarding desire have been detoxified. A crucial distinction is between the cognitive and causal aspects of desire, between the estimation of desirability (preference) and the actual motivation it may initiate (desire). Failure to recognize desire’s cognitive aspect preemptively disables its participation in practical reasoning. (shrink)

Theories of self-defence tend to invest heavily in ‘liability justifications’: if the Attacker is liable to have defensive violence deployed against him by the Defender, then he will not be wronged by such violence, and selfdefence becomes, as a result, morally unproblematic. This paper contends that liability justifications are overrated. The deeper contribution to an explanation of why defensive permissions exist is made by the Defender’s non-liability. Drawing on both canonical cases of self-defence, featuring Culpable Attackers, and more penumbral cases (...) of self-defence, involving Non-Responsible Threats, a case is assembled for the ‘Non-Liability First Account’ of self-defence. (shrink)

One Rawlsian response to G. A. Cohen’s criticisms of justice as fairness which Cohen canvasses, and then dismisses, is the 'Freedom Objection'. It comes in two versions. The 'First Version' asserts that there is an unresolved trilemma among the three principles of equality, Pareto-optimality, and freedom of occupational choice, while the 'Second Version' imputes to Rawls’s theory a concern to protect occupational freedom over equality of condition. This article is mainly concerned with advancing three claims. First, the 'ethical solution' Cohen (...) advances against the First Version of the Freedom Objection does not grant a fair hearing to the Freedom Objection. Second, the distinction Cohen presses between the legal and moral right of occupational choice in his response to the Second Version cannot save him from worries about Stalinist coercion. Third, Cohen’s response to the First Version of the Freedom Objection is actually in tension with his response to the Second Version of the Freedom Objection. (shrink)

This paper argues for the value of the ‘strange’ as a hermeneutical tool to open fresh perspectives on an issue of widespread human concern, specifically how to deal with and relate to the dead. Traditional Chinese folk religion and the animistic ghost culture found within it is introduced and the role of gods, ancestors, and ghosts explained. The view that death is not the end of life but the transition to a new relationship with the living raises questions about our (...) potential obligations to the dead. It also has implications for our thinking about intergenerational justice and the role of our memory of the past in shaping our present and future experience. (shrink)

This thesis examines the relationship between nihilism and postmodernism in relation to the sublime, and is divided into two parts: theory and literature. Beginning with histories of nihilism and the sublime, the Enlightenment is constructed as a conflict between the two. Rather than promote a simple binarism, however, nihilism is constructed as a temporally-displaced form of sublimity that is merely labelled as nihilism because of the dominant ideologies at the time. Postmodernism, as a product of the Enlightenment, is therefore implicitly (...) related to both nihilism and the sublime, despite the fact that it is often characterised as either nihilistic or sublime. Whereas prior forms of nihilism are ‗modernist‘ because they seek to codify reality, postmodernism creates a new formulation of nihilism – ‗postmodern nihilism‘ – that is itself sublime. This is explored in relation to a broad survey of postmodern literature through a series of interconnected themes. These themes – apocalypse, the absurd, absence, and space – arise from the debates presented in the theoretical chapters of this thesis, and demonstrate the ways in which nihilism and the sublime interact within postmodern literature. Because of the theoretical and literary debates presented within it, this thesis concludes that it cannot be a thesis at all. (shrink)

There is currently debate between deflationists and anti-deflationists about the ontology of persisting objects. Some deflationists think that disputes between, for example, four-dimensionalists (e.g. Ted Sider and David Lewis) and quasi-nihilists (e.g. Peter Van Inwagen and Trenton Merricks) are merely verbal disputes. Anti-deflationists deny this. Eli Hirsch is a deflationist who maintains that many ontological disputes are merely verbal. Theodore Sider maintains that the disputes are not merely verbal. Hirsch and Sider are thus engaged in a metaontological dispute. In this (...) paper, I argue that Hirsch's metaontological dispute with Sider is, by Hirsch's own lights, itself merely verbal. I conclude that the mere verbalness of his metaontological dispute with Sider suggests that Hirsch's account of what makes a dispute merely verbal may be problematic. (shrink)

This essay responds to the thoughtful essays on the Order of Public Reason (OPR) by Elvio Baccarini, Giulia Bistagnino and Nenad Miscevic. All three essays interrogate OPR’s understanding of moral theory - “meta” matters about the nature of morality, reasons and modeling within moral theories. I first turn to the general understanding of the moral enterprise underlying OPR, explaining why it takes a view at odds with the contemporary mainstream in moral philosophy. I then explain the idea of moral truth (...) in OPR: when it comes to social morality, moral truth is necessarily a function of what can be endorsed by some collectivity. Th is leads to a fundamental worry about theories of public reason: why is the endorsement of the public so important? And if some sort of public endorsement is really so terribly important, how can a theory of public reason withstand the fact that it advances its own controversial claims that cannot be publicly endorsed? After considering when public endorsement is necessary, and when public reason theories can make controversial claims, I close by considering in what way OPR does, and in what way it does not, employ a thought experiment, and the complexities of that. (shrink)

Festschrift in Honor of Barry Smith on the occasion of his 65th Birthday. Published as issue 4:4 of the journal Cosmos + Taxis: Studies in Emergent Order and Organization. Includes contributions by Wolfgang Grassl, Nicola Guarino, John T. Kearns, Rudolf Lüthe, Luc Schneider, Peter Simons, Wojciech Żełaniec, and Jan Woleński.

Sharon Street’s 2006 article “A Darwinian Dilemma for Realist Theories of Value” challenges the epistemological pretensions of the moral realist, of the nonnaturalist in particular. Given that “Evolutionary forces have played a tremendous role in shaping the content of human evaluative attitudes” – why should one suppose such attitudes and concomitant beliefs would track an independent moral reality? Especially since, on a nonnaturalist view, moral truth is causally inert. I abstract a logical skeleton of Street’s argument and, with its aid, (...) focus on problematic assumptions regarding the (a)causality of moral truth. It emerges that there are acquired causal powers that compensate for the intrinsic impotence of moral truth, as well as two distinct levels at which truth-tracking might occur. I argue that while evolution’s selective forces do not track moral truth, that does not imply individual organisms could not have evolved that capability. -/- . (shrink)

The question “Why should I be moral?” has long haunted normative ethics. How one answers it depends critically upon one’s understanding of morality, self-interest, and the relation between them. Stephen Finlay, in “Too Much Morality”, challenges the conventional interpretation of morality in terms of mutual fellowship, offering instead the “radical” view that it demands complete altruistic self-abnegation: the abandonment of one’s own interests in favor of those of any “anonymous” other. He ameliorates this with the proviso that there is no (...) rational basis for morality’s presumption of precedence, leaving it up to each person to decide when and whether they prefer self-interested concerns to more stringent moral requirements. I counter Finlay’s radical altruism with fair egalitarianism, a more congenial interpretation of moral normativity that repudiates self-abnegation and holds instead that ceteris paribus everybody’s interests are equal. As a result, supererogation and moral sainthood become more intelligible, and the choice between self-interest and morality becomes one between different decision procedures, the particular advantage of morality being others compatible results. (shrink)

This editorial introduces the Journal of Consciousness Studies special issue on "Animal Consciousness". The 15 contributors and co-editors answer the question "How should we study animal consciousness scientifically?" in 500 words or fewer.

Reaction-diffusion systems which have reaction term satisfying f(-q) = -f(q) tend strongly to form striped patterns. Haken’s slaving principle is used to derive differential equations for unstable mode amplitudes close to the Turing instability. This connects a dynamical symmetry to pattern selection, with possible relevance to biological and chemical pattern-forming phenomena.

There are Humeans and unHumeans, disagreeing as to the validity of the Treatise’s ideas regarding practical reason, but not as to their importance. The basic argument here is that the enduring irresolution of their Hume centric debates has been fostered by what can be called the fallacy of normative monism, i.e. a failure to distinguish between two different kinds of normativity: empirical vs. rational. Humeans take the empirical normativity of personal desire to constitute the only real kind, while unHumeans insist (...) that only the objective rationality associated with categorical morality can provide reliable normative guidance. In turn, the failure to recognize the dual nature of normativity has helped engender motivational obscurantism: as essentially causal notions, motive and motivation obscure the rational processes that lie at the heart of deliberation and choice. Once it is realized that normativity takes two different forms, each with its own distinctive role, it becomes possible to mediate if not mitigate the differences between Humeans and unHumeans. Choice will be the key to understanding practical reasoning, and its analysis will provide the basis for a belief/desire model that upends conventional wisdom regarding motivation and desire. (shrink)

We present a technique for the analysis of pattern formation by a class of models for the formation of ocular dominance stripes in the striate cortex of some mammals. The method, which employs the adiabatic approximation to derive a set of ordinary differential equations for patterning modes, has been successfully applied to reaction-diffusion models for striped patterns [1]. Models of ocular dominance stripes have been studied [2,3] by computation, or by linearization of the model equations. These techniques do not provide (...) a rationale for the origin of the stripes. We show here that stripe formation is a non-linear property of the models. Our analysis indicates that stripe selection is closely linked to a property in the dynamics of the models which arises from a symmetry between ipsilateral and contralateral synapses to the visual cortex of a given hemisphere. (shrink)

It is natural to oppose morality and self-interest; it is customary also to oppose morality to interests as such, an inclination encouraged by Kantian tradition. However, if “interest” is understood simply as what moves a person to do this rather than that, then – if persons ever actually are good and do what is right – there must be moral interests. Bradley, in posing the “Why should I be moral?” question, raises Kant-inspired objections to the possibility of moral interests qua (...) particular, conditional causes. The paper argues that these objections can be met if (a) one distinguishes between what makes something right and what makes something right happen, and (b) doing what is right is intrinsic to a person’s interests and not merely a means to ulterior ends. The requisite completeness of rational morality is shown to exclude pluralistic approaches. Given rational monism, people can find intrinsic advantage in morality’s justifiability, cooperativeness and communality. (shrink)

It is generally supposed that borderline cases account for the tolerance of vague terms, yet cannot themselves be sharply bounded, leading to infinite levels of higher order vagueness. This higher order vagueness subverts any formal effort to make language precise. However, it is possible to show that tolerance must diminish at higher orders. The attempt to derive it from indiscriminability founders on a simple empirical test, and we learn instead that there is no limit to how small higher order tolerance (...) may become. That means there is no limit to how precisely we may draw the boundaries of borderline cases, thus forestalling any requirement for higher order vagueness. (shrink)

The realist belief in robustly attitude-independent evaluative truths – more specifically, moral truths – is challenged by Sharon Street’s essay “A Darwinian Dilemma for Realist Theories of Value”. We know the content of human normative beliefs and attitudes has been profoundly influenced by a Darwinian natural selection process that favors adaptivity. But if simple adaptivity can explain the content of our evaluative beliefs, any connection they might have with abstract moral truth would seem to be purely coincidental. She continues the (...) skeptical attack in “Objectivity and Truth: You’d Better Rethink It”, concentrating on the intuitionist realism of Ronald Dworkin. The latter sees the issue fundamentally as a holistic choice between moral objectivity and the genocide-countenancing consequences of abandoning objective standards. Street counters that, because of realism’s skeptical difficulties, Dworkin’s Choice (as I call it) actually works in favor of her Euthyphronic antirealism. I will argue that she misrepresents the realist’s skeptical challenge, and that clarifying the character of that challenge renders the case for normative realism much more appealing. Indeed, I claim that Street fails to exclude the genuine possibility of a rational basis for moral truth. (shrink)

These reflections are an attempt to get to the heart of the "reason is the slave of the passions" debate. The whole point of deliberation is to arrive at a choice. What factors persons find to be choice-relevant is a purely empirical matter. This has significant consequences for the views of Hume, Williams, Nagel, Parfit and Korsgaard regarding practical reason.

The argument that follows has a certain air of prestidigitation about it. I attempt to show that, given a couple of innocent-seeming suppositions, it is possible to derive a positive and complete theory of normative ethics from the Humean maxim "You can't get ought from is." This seems, of course, absurd. If the reasoning isn't completely unhinged, you may be sure, the trick has to lie in those "innocent-seeming" props. And, in fact, you are right. But every argument has to (...) begin somewhere, and, however questionable, those suppositions just don't seem to harbor serious normative import. (shrink)

Contemporary discussions do not always clearly distinguish two different forms of vagueness. Sometimes focus is on the imprecision of predicates, and sometimes the indefiniteness of statements. The two are intimately related, of course. A predicate is imprecise if there are instances to which it neither definitely applies nor definitely does not apply, instances of which it is neither definitely true nor definitely false. However, indefinite statements will occur in everyday discourse only if speakers in fact apply imprecise predicates to such (...) indefinite instances. (What makes an instance indefinite is, it should be clear, predicate-relative.) The basic issue in the present inquiry is whether this indefiniteness ever really occurs; the basic question is, Why should it ever occur? (shrink)

Is 'vague' vague? Is the meaning of 'true' vague? Is higher-order vagueness unavoidable? Is it possible to say precisely what it is to say something precisely? These questions, deeply interrelated and of fundamental importance to logic and semantics, have been addressed recently by Achille Varzi in articles focused on an ingenius attempt by Roy Sorensen ("An Argument for the Vagueness of 'Vague'") to demonstrate that 'vague' is vague.

"[L]ove is not merely a contributor - one among others - to meaningful life. In its own way it may underlie all other forms of meaning....by its very nature love is the principal means by which creatures like us seek affective relations to persons, things, or ideals that have value and importance for us. I. The Look of Love.

There is no doubt that custard apple diseases are among the important reasons that destroy the Custard Apple plant and its agricultural crops. This leads to obvious damage to these plants and they become inedible. Discovering these diseases is a good step to provide the appropriate and correct treatment. Determining the treatment with high accuracy depends on the method used to correctly diagnose the disease, expert systems can greatly help in avoiding damage to these plants. The expert system correctly diagnoses (...) Custard Apple disease to make it easier for farmers to find the right treatment based on the appropriate diagnosis. Objectives: A specialized syllable language system was established for the diagnosis of Custard Apple plant disease. (shrink)

This paper will set out in plain language the basic ontology of “Deleuze’s Spinoza”; it will then critically examine whether such a Spinoza has, or indeed could have, ever truly existed. In this, it will be shown that Deleuze’s reading of Spinoza involves the imposition of three interlocking, formal principles. These are (1) Necessitarianism, (2) Immanence, and (3) Univocity. The uncovering of Deleuze’s use of these three principles, how they relate to one another, and what they jointly imply in terms (...) of ontology, will occupy Part 1 of this paper. The critique of these principles from a Spinozist perspective, i.e. that their use by Deleuze is incompatible with Spinoza’s own metaphysics, will occupy Part 2 of this paper. (shrink)

This chapter provides an introduction to higher-order metaphysics as well as to the contributions to this volume. We discuss five topics, corresponding to the five parts of this volume, and summarize the contributions to each part. First, we motivate the usefulness of higher-order quantification in metaphysics using a number of examples, and discuss the question of how such quantifiers should be interpreted. We provide a brief introduction to the most common forms of higher-order logics used in metaphysics, and indicate a (...) number of questions which can be raised in such systems using logical vocabulary alone. Using a further example, we return to applications of higher-order logics in metaphysics. We also mention key developments in the history of higher-order logic as it pertains to metaphysics. Finally, we mention certain arguments which have been raised against the use of higher-order logic, and some ways of responding to them. (shrink)

Many of our most important goals require months or even years of effort to achieve, and some never get achieved at all. As social psychologists have lately emphasized, success in pursuing such goals requires the capacity for perseverance, or "grit." Philosophers have had little to say about grit, however, insofar as it differs from more familiar notions of willpower or continence. This leaves us ill-equipped to assess the social and moral implications of promoting grit. We propose that grit has an (...) important epistemic component, in that failures of perseverance are often caused by a significant loss of confidence that one will succeed if one continues to try. Correspondingly, successful exercises of grit often involve a kind of epistemic resilience in the face of failure, injury, rejection, and other setbacks that constitute genuine evidence that success is not forthcoming. Given this, we discuss whether and to what extent displays of grit can be epistemically as well as practically rational. We conclude that they can be (although many are not), and that the rationality of grit will depend partly on features of the context the agent normally finds herself in. In particular, grit-friendly norms of deliberation might be irrational to use in contexts of severe material scarcity or oppression. (shrink)

In their cognitive theory of emotion, Schachter and Singer proposed that feelings are separable from what they are about. As a test, they induced feelings of arousal by injecting epinephrine and then molded them into different emotions. They illuminated how feelings in one moment lead into the next to form a stream of conscious experience. We examine the construction of emotion in a similar spirit. We use the sensory integration process to understand how the brain combines disparate sources of information (...) to construct both perceptual and emotional models of the world even as the world continues to change. We emphasize two processes: affect segmentation and affect integration. (shrink)

This essential reference text on the life, thought and writings of Plato uses over 160 short, accessible articles to cover a complete range of topics for both the first-time student and seasoned scholar of Plato and ancient philosophy. It is organized into five parts illuminating Plato’s life, the whole of the Dialogues attributed to him, the Dialogues’ literary features, the concepts and themes explored within them and Plato’s reception via his influence on subsequent philosophers and the various interpretations of his (...) work. This fully updated 2nd edition includes 19 newly commissioned entries on topics ranging across comedy, tragedy, Xenophon, metatheatre, gender, musical theory, animals, Orphism, political theory, religion, time, Hellenistic philosophy and post-Platonic ancient commentaries. It also features revisions to the majority of articles from the 1st edition, including 8 which have been completely re-written, and 12 which have had the references substantially revised. Reflecting the growing diversity of Plato scholarship across the world, this edition includes contributions from a wide range of scholars who enrich the field and provide students and scholars with a vital resource for study and reference. (shrink)

This article introduces the notion of duplex elements of the finite rings and corresponding neutrosophic rings. The authors establish duplex ring Dup(R) and neutrosophic duplex ring Dup(R)I)) by way of various illustrations. The tables of different duplicities are constructed to reveal the comparison between rings Dup(Zn), Dup(Dup(Zn)) and Dup(Dup(Dup(Zn ))) for the cyclic ring Zn . The proposed duplicity structures have several algebraic systems with dissimilar consequences. Author’s characterize finite rings with R + R is different from the duplex ring (...) Dup(R). However, this characterization supports that R + R = Dup(R) for some well known rings, namely zero rings and finite fields. (shrink)

The word ‘equality’ often requires disambiguation, which is provided by context or by an explicit modifier. For each sort of magnitude, there is at least one sense of ‘equals’ with its correlated senses of ‘is greater than’ and ‘is less than’. Given any two magnitudes of the same sort—two line segments, two plane figures, two solids, two time intervals, two temperature intervals, two amounts of money in a single currency, and the like—the one equals the other or the one is (...) greater than the other or the one is greater than the other [sc. in appropriate correlated senses of ‘equals’, ‘is greater than’ and ‘is less than’]. In case there are two or more appropriate senses of ‘equals’, the one intended is often indicated by an adverb. For example, one plane figure may be said to be equal in area to another and, in certain cases, one plane figure may be said to be equal in length to another. Each sense of ‘equality’ is tied to a specific domain and is therefore non-logical. Notice that in every cases ‘equality’ is definable in terms of ‘is greater than’ and also in terms of ‘is less than’ both of which are routinely considered domain specific, non-logical. The word ‘identity’ in the logical sense does not require disambiguation. Moreover, it is not correlated ‘is greater than’ and ‘is less than’. If it is not the case that a certain designated triangle is [sc. is identical to] an otherwise designated triangle, it is not necessary for the one to be greater than or less than the other. Moreover, if two magnitudes are equal then a unit of measure can be chosen and, no matter what unit is chosen, each magnitude is the same multiple of the unit that the other is. But identity does not require units. In this regard, congruence is like identity and unlike equality. In arithmetic, the logical concept of identity is coextensive with the arithmetic concept of equality. The logical concept of identity admits of an analytically adequate definition in terms of logical concepts: given any number x and any number y, x is y iff x has every property that y has. The arithmetical concept of equality admits of an analytically adequate definition in terms of arithmetical concepts: given any number x and any number y, x equals y iff x is neither less than nor greater than y. As Aristotle told us and as Frege retold us, just because one relation is coextensive with another is no reason to conclude that they are one. (shrink)

Aggregating individuals’ consistent attitudes might produce inconsistent collective attitudes. Some groups therefore need the capacity to form attitudes that are irreducible to those of their members. Such groups, group-agent realists argue, are agents in control of their own attitude formation. In this paper, however, I show how group-agent realism overlooks the important fact that groups consist of strategically interacting agents. Only by eliminating group agency from our social explanations can we see how individuals vote strategically to gain control of their (...) groups and produce collective attitudes we cannot make sense of if we treat groups as agents. (shrink)

The nature of practical reasoning is a matter of considerable philosophical interest, particularly the extent to which the process can be understood in terms of standard (i.e. deductive) reasoning, and what form it might take. Even were it to turn out, e.g. as per Aristotle, that essential elements cannot be accommodated deductively, it would still remain of interest to delimit any and all respects that can be so accommodated. -/- In the following I wish to demonstrate that the culmination of (...) a typical deliberative process can be represented deductively. (shrink)

The paper deals with the methodological clash between idealism and anti-idealism in political philosophy, and highlights its importance for public reason (PR) and public justification (PJ) theorising. Upon reviewing the broader context which harks back to Rawls’s notion of a realistic utopia, we focus on two major recent contributions to the debate in the work of David Estlund (the prototypical utopian) and Gerald Gaus (the cautious anti-utopian). While Estlund presents a powerful case on behalf of ideal theorising, claiming that (...) motivational incapacity and other non-ideal features of “human nature” – the so-called bad facts – do not normally refute the desirability of highly utopian theories of justice, we show that Gaus is correct in stressing the importance of feasibility considerations, including empirical knowledge about human societies. Because moral disagreement is to be expected even among cognitively and morally excellent reasoners, we argue that Estlund’s search for Truth about justice must idealise away normative diversity as just another bad fact. This methodological dispute has important ramifications for current debates about PR and PJ as the grounds of liberal legitimacy. Because consensual approaches rely on strong idealisation which results in exclusion of numerous comprehensive doctrines from consideration, we conclude that convergence-based liberal political theory has distinct advantage as regards exploiting normative diversity to the advantage of everyone. (shrink)

We provide an analysis of the public's having warranted epistemic trust in science, that is, the conditions under which the public may be said to have well-placed trust in the scientists as providers of information. We distinguish between basic and enhanced epistemic trust in science and provide necessary conditions for both. We then present the controversy regarding the connection between autism and measles–mumps–rubella vaccination as a case study to illustrate our analysis. The realization of warranted epistemic public trust in science (...) requires various societal conditions, which we briefly introduce in the concluding section. (shrink)

Can groups really be agents or is group agency just a fiction? Christian List and Philip Pettit argue influentially for group-agent realism by showing how certain groups form and act on attitudes in ways they take to be unexplainable at the level of the individual agents constituting them. Group agency is therefore considered not a fiction or a metaphor but a reality we must account for in explanations of certain social phenomena. In this paper, I challenge this defence of group-agent (...) realism by showing how it is undermined by individual-level analysis of how individuals interact within groups. While group agency can be a useful fiction, real agents are at the individual level, not the collective level. (shrink)