An analysis of the extension of the Hawking-Penrose singularity theorem to Riemann-Cartan U4 space-times with torsion and spin density is undertaken. The minimal coupling principle in U4 is used to formulate a new expression for the convergence condition autoparallels in Einstein-Cartan theory. The Gödel model with torsion is given as an example.

Code-based cryptography is currently the second most promising post-quantum mathematical tool for quantum-resistant algorithms. Since in 2022 the first post-quantum standard Key Encapsulation Mechanism, Kyber (a latticed-based algorithm), was selected to be established as standard, and after that the National Institute of Standards and Technology post-quantum standardization call focused in code-based cryptosystems. Three of the four candidates that remain in the fourth round are code-based algorithms. In fact, the only non-code-based algorithm (SIKE) is now considered vulnerable. Due to this landscape, (...) it is crucial to update previous results about these algorithms and their functioning. The Fujisaki-Okamoto transformation is a key part of the study of post-quantum algorithms and in this work we focus our analysis on Classic McEliece, BIKE and HQC proposals, and how they apply this transformation to obtain IND-CCA semantic security. Since after security the most important parameter in the evaluation of the algorithms is performance, we have compared the performance of the code-based algorithms of the NIST call considering the same architecture for all of them. (shrink)

Integrating power dependence and gender role theories, we investigate the interactive effects of followers’ gender and leaders’ Machiavellian orientation in predicting followers’ usage of upward influence tactics. Using a sample of 156 matched leader–follower dyads, we found that followers’ gender moderated the relationship between Time 1 leaders’ Machiavellian orientation and followers’ use of upward influence tactics at Time 2. Specifically, the relationship between Time 1 leaders’ Machiavellianism and Time 2 followers’ ingratiation was significant and positive for women followers and non-significant (...) for men followers, while the relationship between Time 1 leaders’ Machiavellianism and Time 2 followers’ assertiveness was significant and positive for men followers but non-significant for women followers. These results suggest that gender plays an important role in how followers react to Machiavellian leaders. The social and ethical implications of these findings are discussed. (shrink)

In the seventh and most recent edition of their classic book, Principles of Biomedical Ethics, Tom Beauchamp and James Childress define a virtue as a character trait that is “socially valuable and reliably present” and a moral virtue as such a trait that is also both “dispositional” and “morally valuable”. The virtues that they single out as “focal” within biomedical ethics are compassion, discernment, trustworthiness, integrity, and conscientiousness. Not all is well in their treatment of virtue. Beauchamp and Childress seem (...) to worry that an ethical theory in which virtues are fundamental will neglect duties, rights, and societal needs. Further, they insist that there is no reason to think that, within ethical theory, one family of ethical concepts is the most important, nor that one theoretical approach is correct, or even superior to others. I will try to show, that there are strong reasons to see language, concepts, and matters of virtue as fundamental within normative ethical theory, both generally and in such specialized subareas as medical ethics. These reasons reveal themselves when we analyze concepts at the core of the alternative approaches to theorizing ethics that Beauchamp and Childress identify. (shrink)

The paper defends the thesis that for S to V intentionally is for S to V as (in the way) S intended to. For the normal agent the relevant sort of intention is an intention that one's intention to V generate an instance of one's V-ing along some (usually dimly-conceived) productive path. Such an account allows us to say some actions are intentional to a greater or lesser extent (a desirable option for certain cases of wayward causal chains), preserves the (...) intuitive link between intention and intentionally, and supports the common sense view that the concept of intending is more basic than those of acting with an intention and of acting intentionally. The remainder of the paper responds to certain apparent counter-examples offered by Audi, Harman, and Bratman. In the course of this, I discuss connections between intending to V and hoping to V, and I argue that one can intend to do what one doesn't expect to do, and that one always intends what one attempts. (shrink)

Tommie Shelby has offered an influential, carefully stated, and well-argued set of objections to any volitional analysis of racism (VAR) as consisting centrally in certain forms of race-based disregard. Here I hope to defend aspects of VAR by analyzing, evaluating, and sometimes countering several of his major contentions, which have stood unchallenged in the literature over more than two decades. First, I sketch and respond to his Methodological objection to VAR, which criticizes VAR's reliance on language and linguistic intuitions; then (...) to a Psychological objection, which suggests that VAR implausibly distances an agent's intentions from her beliefs; and, finally, to a Psychopathological objection, which holds that VAR requires treating as unproblematic some psychological states better seen as aberrant. The following section treats three subtle counterexamples Shelby uses to challenge VAR's core contentions about what's necessary and what's sufficient for racism. I close with some gestures toward what I see as a promising approach, very different from his, to studying these topics. (shrink)

A genuine bioethics would be fiercely devoted to human life (bios) and would express that devotion by articulating as well as advocating moral virtues that rigorously protect that value against the temptation to see life in purely instrumental terms. In my view, no genuine bioethics exists today. In what follows, I will question two fundamental assumptions often presumed in discussions of euthanasia and assisted suicide. These are (i) the agent does will her victim (i.e., her putative beneficiary) some significant human (...) good, e.g., relief from pain, escape from becoming a burden to loved ones, a dignified death, or simply self-determination; (ii) in purposely helping someone to kill herself or in killing her for her own good, the agent wills her no serious harm. Put differently, I question the assumption of ‘mercy’ in so-called ‘mercy-killing’. (shrink)

I here respond to several points in Faucher and Machery’s vigorous and informative critique of my volitional account of racism (VAR). First, although the authors deem it a form of "implicit racial bias," a mere tendency to associate black people with "negative" concepts falls short of racial "bias" or prejudice in the relevant sense. Second, such an associative disposition need not even be morally objectionable. Third, even for more substantial forms of implicit racial bias such as race-based fear or disgust, (...) Faucher and Machery offer no account or explanation of when we should consider these racist, in whom, in what respect(s), or why. So, findings of implicit racial bias pose no clear objection to VAR. Fourth, because VAR allows not only racial hate, but also callous indifference, disdain, and other forms of racially driven disregard, to be racist,VAR is not "psychologically monist." Fifth, as VAR allows racist attitudes to be immoral in more than one way, offending against both the moral virtues of benevolence and justice, VAR is not "morally monist" either. I also reveal problems with some of Faucher and Machery’s other claims: Faucher and Machery take too narrow a conception of the types of psychology that can contribute to understanding racism; the internal complexity of hatred, which they approvingly mention, is irrelevant to VAR’s truth and undermines part of their criticism of VAR; whether some forms of racial bias are "racial ills" is irrelevant to VAR, which only analyzes racism; over-attention to implicit racial bias may cloak or exacerbate some of our society’s racial ills, or even constitute a new one. I conclude by noting that Faucher and Machery are not just critics of VAR but also allies of VAR in important controversies against those who insist racism lies primarily in social structures and institutions. (shrink)

Morality and religion: intimately wed, violently opposed, or something else? Discussion of this issue appears in pop culture, the academy, and the media―often generating radically opposed views. At one end of the spectrum are those who think that unless God exists, ethics is unfounded and the moral life is unmotivated. At the other end are those who think that religious belief is unnecessary for―and even a threat to―ethical knowledge and the moral life. -/- This volume provides an accessible, charitable discussion (...) that represents a range of views along this spectrum. The book begins with a lively debate between Paul Kurtz and William Lane Craig on the question, Is goodness without God good enough? Kurtz defends the affirmative position and Craig the negative. Following the debate are new essays by prominent scholars. These essays comment on the debate and advance the broader discussion of religion and morality. The book closes with final responses from Kurtz and Craig. (shrink)

This article responds to logical and social theses proposed by Professor José Medina in discussing the relativity of identity. In exploring the metaphor of family resemblance, the author argues that its causal mechanism is biological, not social; particular features of being a woman, or of belonging to a racial or ethnic group, cannot be reduced to social constructions. The article skeptically discusses the supposed importance of sex, race, and ethnicity to a person’s individual identity, and suggests that moral significance finds (...) its origin and grounding elsewhere. It concludes that no liberation can be ‘complete, or even adequate’ until it liberates the mind from ‘“scripts” rooted in the delusion of “collective identities”’. (shrink)

Kant held that an agent can perform her moral duty only if she acts from a special incentive or motive, the sense of duty. Philosophers have objected to this, arguing that motives, intentions, and reasons are relevant in determining whether she acted well or evilly, virtuously or viciously, but not in determining whether she did her duty. Note that these arguments, if successful, would show not only that pace Kant, an agent can do her duty without acting from a sense (...) of duty, but more strongly, that she can do it even though her action was wickedly motivated or done with evil intentions. This stronger conclusion is, I think, false and in this essay I want to examine and criticize several arguments put forward in defense of the view that duty and virtue are so divorced from each other that one can discharge one’s moral duty and do what is morally right with a vicious action. (shrink)

This paper raises serious problems for the commonly held claim that races are socially constructed. The first section sketches out an approach to our construction of institutional phenomena that, taking Searle’s general approach, restricts social construction proper to cases where we adopt rules that bind relevant parties to treat things of a type in certain ways, thus constituting important roles in, and parts of, our social lives. I argue this conception, construction-by-rules, helps distinguish genuine construction from other activities and relations (...) and also solves a problem raised against simplistic conceptions. The second shows why and how Sally Haslanger, Linda Alcoff, and Glenn Loury have explained race as a social construct. The next points out problems for their and other accounts, including circularity, difficulties arising from conceptual and linguistic history, and non sequiturs. After returning to Haslanger in more detail, I proceed critically to engage work by Ian Hacking, Lawrence Blum, Luc Faucher and Edouard Machery, and Charles Mills. The following sections move from specific accounts in the literature to offer general arguments that viewing races as products of social construction threatens to mislead in numerous ways. At the end, I discuss the significance of the issue and challenge whether social constructionist accounts are genuinely liberating. (shrink)

This essay applies to the morality of lying and other deception a sketch of a kind of virtues-based, input-driven, role-centered, patient-focused, ethical theory. Among the questions treated are: What is wrong with lying? Is it always and intrinsically immoral? Can it be correct, as some have vigorously maintained, that lying is morally wrong in some circumstances where other forms of deliberate dissimulation are not? If so, how can that be? And how can it be that lying to someone is immoral (...) when other, harsher ways of treating her are permissible? The essay examines several responses to the first question, and suggests that lying violates morality as an excessive departure from the role-derived virtues of charity and justice: the liar wills another person the evil of false belief precisely in the proposition for which the speaker offers her assurance and takes special responsibility in asserting. So conceived, lying is an especially egregious form of treachery and degrading manipulation of another person. Appeal is then made to the gravity inherent in lying so conceived to suggest ways of answering the other questions which would support the traditional Augustinian claim that lying is inherently impermissible and ineligible in circumstances where other forms of deliberate deception may not be, and even in situations where violent attack may be permissible.At the end, a taxonomy of more and less rigorist positions of lying is offered. A tentative proposal is made that, while consistent with the traditional Augustinian rigorist position that Iving is always immoral, nevertheless has some features that may slightly soften that view’s practical application. The proposed view does this in a way similar to that in which allowing moral dilemmas may soften it, for allowing dilemmas means there may be cases where an act of a type always immoral may still be more eligible than any alternative. However, it is maintained that the view here proposed need not countenance genuine dilemmas. (shrink)

Prof. Alberto Urquidez, in an important recent article that appears in different form in his book, Redefining Racism, offers an informed, sustained, careful, multi-pronged, and sometimes original critique of the volitional analysis of racism, which I have proposed in a series of articles over the past two dozen years. Here I expand and improve VAR’s analysis of paternalistic racists and their beliefs, clarify its ‘infection’-model’s explanation of racism’s spread and variety, and lay out what it is for something to be (...) ‘characteristically’ racist, an understanding that I then use to offer a unified account of the way in which both certain physical objects and certain abstract objects can properly be called racist. Identifying and engaging some presuppositions behind Urquidez’s social, political, and moral criticisms of VAR, I respond to complaints from him and others, showing that VAR’s content is neither politically conservative nor dependent on religious doctrine, and point out that race theory would in fact profit from taking more seriously and internalizing the Christian morality of most African-Americans. (shrink)

Two major objections to divine atemporality center on supposed tensions between the claim that God is omniscient and the claim that he is timeless. Since most defenders of divine timelessness are even more firmly committed to omniscience, driving a wedge between the two is intended to convert such persons to a temporal view of God. However, I believe that both arguments fail to demonstrate an incompatibility between omniscience and timelessness, and that the objections themselves rest in large part on misunderstandings (...) regarding both the motivation for and substance of the doctrine of divine timelessness. (shrink)

This paper critically examines a formal argument against deducing ‘ought’-judgments from ‘is’-judgments, an argument suggested by a literal reading of a famous passage in Hume'sTreatise of Human Nature. According to this argument, judgments of the two kinds have different logical structures (i.e., their subjects are differently related to their predicates) and this difference disallows cross-categorical deductive inferences. I draw on Fregean accounts of the ‘is’- copula and on syntactical interpretations of ‘ought’-judgments that have become standard in deontic logic to argue (...) that twentieth century work in philosophical grammar and logic casts doubt on all three of the argument's premises. (shrink)

Drawing chiefly on recent sources, in Part One I sketch an untraditional way of articulating what I claim to be central elements of traditional Catholic morality, treating it as based in virtues, focused on the recipients (“patients”) of our attention and concern, and centered in certain person-to-person role-relationships. I show the limited and derivative places of “natural law,” and therefore of sin, within that framework. I also sketch out some possible implications for medical ethics of this approach to moral theory, (...) and briefly contrast these with the influential alternative offered by the “principlism” of Beauchamp and Childress. In Part Two, I turn to a Catholic understanding of the nature and meaning of human suffering, drawing especially on writings and addresses of the late Pope John Paul II. He reminds us that physical and mental suffering can provide an opportunity to share in Christ's salvific sacrifice, better to see the nature of our earthly vocation, and to reflect on the dependence that inheres in human existence. At various places, and especially in my conclusion, I suggest a few ways in which this can inform bioethical reflection on morally appropriate responses to those afflicted by physical or mental pain, disability, mental impairment, disease, illness, and poor health prospects. My general point is that mercy must be informed by appreciation of the person's dignity and status. Throughout, my approach is philosophical rather than theological. (shrink)

I first sketch an account of humility as a character trait in which we are unimpressed with our good, envied, or admired features, achievements, etc., where these lack significant salience for our image of ourselves, because of the greater prominence of our limitations and flaws. I situate this view among several other recent conceptions of humility (also called modesty), dividing them between the inward-directed and outward-directed, distinguish mine from them, pose problems for each alternative account, and show how my understanding (...) of humility captures truths present but exaggerated in several of them. Responding to some problems for my view, including what I call “Driver’s Paradox”(i.e., the strangeness of someone’s proclaiming ‘I’m humble!’), I suggest that some over-ambitious claims about our moral responsibilities may indicate a lack of proper humility. I discuss the relationship of the character trait of humility both to what humiliates and to what humbles, concluding with consideration of the background assumptions against which, and the circumstances in which, humility may reasonably be classified as a moral virtue. (shrink)