This commentary is part of a symposium on my book 'Getting Our Act Together: A Theory of Collective Moral Obligations' (Routledge, 2021). Here, I respond to the members of the North American Society for Social Philosophy’s 2022 Book Award Committee. I discuss whether most moral theory is individualistic, arguing that “traditional ethical theories” - meaning the traditions of Virtue Ethics, Kantian ethics as well as consequentialist ethics - certainly are. All of these focus on what individual agents ought to (...) do or how they ought to be. The commentators wonder whether any substantive moral theory can accommodate the idea of collective obligations? I suggest that one of my conditions for collective moral obligations is incompatible with objectivist versions of act-utilitarianism, which require moral agents to choose the option that actually maximises utility. Having said that, core elements of my account of collective moral obligations can be used with any substantive theory. Further, the theory—in its entirety—can be used with several substantive theories, including versions of all the major types of moral theory. How common are collective obligations? On my understanding, as fundamentally social thinkers, we are fairly flexible at switching between the we-mode and the I-mode, and will regularly respond to contextual cues for framing collective action scenarios. As such, I am not worried that there would be too few circumstances under which we have all-out collective obligations. What is more, we can generate such obligations by providing contextual cues for others that prompt them to frame situations as opportunities for joint action and to perform contributory actions. Another question raised by the commentators was if for having collective obligations it is crucial that we believe others will contribute? My answer is that such obligations do not necessarily depend on having positive evidence that concrete others are or will be contributing. Having said that, where we have positive evidence that others will not contribute and in particular where we know that their failure to contribute will unilaterally undermine the possibility of success of any collective action (as in strict joint necessity cases) this may undermine collective obligations. On my theory, what happens if people disagree on what is morally best? On my view, where such divergence between moral positions comes as a result of disagreement between morally motivated, reasonable, and well-informed people it undermines their collective obligation. Finally, are there “negative” collective duties? Yes, in fact collective harm cases can be conceived of as generating “negative” duties to collectively refrain from generating these kinds of harms, including our obligations to mitigate climate change through reducing greenhouse emissions. (shrink)

This is a critical commentary on Kathrin Koslicki's book The Structure of Objects (OUP, 2008).

Our latest contribution to the world’s battle against climate and biodiversity crises was an expert commentary on Vietnamese forests and the prospect of carbon credits trade. The article appeared in the Land and Climate Review on Feb. 2, 2024.

Social commentary is the act of using rhetorical means to provide commentary on social, cultural, political, or economic issues in a society. This is often done with the idea of implementing or promoting change by informing the general populace about a given problem and appealing to people's sense of justice. Social commentary can be practiced through all forms of communication, from printed form, to conversations to computerized communication.

This commentary further explores some of the ethical issues raised by Prof. Peter Singer in his Lanson Lecture “Pandemic Ethics: Five Lessons”. In the first part, I distinguish a prioritarian approach to the allocation of scarce medical resources, from the utilitarian one advocated by Singer. I suggest that the prioritarian view better matches common intuitions about fair distribution, even though it likely needs to be balanced with other principles if it is to have plausibility in contexts like vaccine allocation. (...) In the second part of the commentary, I take a global perspective (as Singer himself does regarding the ethics of lockdowns), and highlight the controversial implications of adopting a fully cosmopolitan ethical outlook when deciding how to distribute Covid-19 vaccines. I also raise justice-related concerns about Singer’s proposal to use well-being as a single metric for evaluating public health policies. (shrink)

We argue that the need for commentary in commonly used linear calculi of natural deduction is connected to the “deletion” of illocutionary expressions that express the role of propositions as reasons, assumptions, or inferred propositions. We first analyze the formalization of an informal proof in some common calculi which do not formalize natural language illocutionary expressions, and show that in these calculi the formalizations of the example proof rely on commentary devices that have no counterpart in the original (...) proof. We then present a linear natural deduction calculus that makes use of formal illocutionary expressions in such a way that unique readability for derivations is guaranteed – thus showing that formalizing illocutionary expressions can eliminate the need for commentary. (shrink)

Commentary to Leslie McCall's 2005 paper "The complexity of intersectionality", with a review of her main points and some critical remarks.

Commentary on Neuhaus and Parent, 'Gene doping--In Animals?' (2019).

This is an invited commentary on "Physical Time within Human Time" (Gruber, Block, & Montemayor, 2022) and "Bridging the Neuroscience and Physics of Time" (Buonomano & Rovelli, 2021). I’m very sympathetic to aspects of each proposal. In this article, I offer some comments, starting with (Buonomano & Rovelli, 2021).

In this commentary on Yashar Saghai's article "Salvaging the Concept of Nudge" (JME 2013) I discuss his distinction between a 'prod' (which is 'substantially controlling') and a 'nudge' (which is ‘substantially non-controlling’).

A commentary on: The Alleged Coupling-Constitution Fallacy and the Mature Sciences by Ross, D., and Ladyman, J. (2010). The Extended Mind, ed R. Menary (Cambridge, MA: MIT Press), 155–166.

This is a commentary on Andrea Lavazza and Murilo Vilaça's article "Human Extinction and AI: What We Can Learn from the Ultimate Threat" (Lavazza & Vilaça, 2024). I discuss the potential concern that their proposal to create artificial successors to "insure" against the tragedy of human extinction might mean being too quick to accept that catastrophic prospect as inevitable, rather than single-mindedly focusing on avoiding it. I also consider the question of the value that we might reasonably assign to (...) such a future of artificial successors under the assumption that they do not enjoy phenomenal consciousness. (shrink)

The commentary on Plato's Republic by Proclus (d. 485 CE), which takes the form of a series of essays, is the only sustained treatment of the dialogue to survive from antiquity. This three-volume edition presents the first complete English translation of Proclus' text, together with a general introduction that argues for the unity of Proclus' Commentary and orients the reader to the use which the Neoplatonists made of Plato's Republic in their educational program. Each volume is completed by (...) a Greek word index and an English-Greek glossary that will help non-specialists to track the occurrence of key terms throughout the translated text. The second volume of the edition presents Proclus' essays on the tripartite soul and the virtues, female philosopher rulers, and the metaphysics and epistemology of the central books of the Republic. The longest of the essays in Volume II interprets the nature and significance of the 'marriage number' whose miscalculation leads to the degeneration of the ideal city-state. (shrink)

The recent news of a 13-year-old Singaporean prodigy graduating from an Australian university has sparked discussion about Singapore’s approach to nurturing exceptional young talents, especially after it was revealed that the boy had been previously rejected by a local university because of his young age. Some have called for an increased flexibility to allow such young people to skip levels in Singapore - parents of intellectually advanced children often cite concerns that their children are disengaged and bored at school. The (...) fear is real - keeping these students at the same level as their peers could potentially squander their potential and impede their growth. Yet, on the flip side, accelerating their academic journey could potentially jeopardise their social and emotional development, which could negatively impact their ability to connect and work well with their peers in their adulthood. Nonetheless, this debate brings to light the need for more effective strategies to meaningfully engage students with diverse abilities and learning paces. (shrink)

Jennifer Hornsby’s 1997 paper, ‘Truth: The Identity Theory’, has been highly influential in making the identity theory of truth a viable option in contemporary philosophy. In this introduction and commentary I focus on what distinguishes her theory and its methodology from the correspondence theory and the ‘substantivist’ methodology, and on other issues that have not been widely discussed in earlier commentaries yet are central to the current debate on truth.

Proclus' commentary on Plato's dialogue Timaeus is arguably the most important commentary on a text of Plato, offering unparalleled insights into eight centuries of Platonic interpretation. It has had an enormous influence on subsequent Plato scholarship. This edition offers the first new English translation of the work for nearly two centuries, building on significant recent advances in scholarship on Neoplatonic commentators. It provides an invaluable record of early interpretations of Plato's dialogue, while also presenting Proclus' own views on (...) the meaning and significance of Platonic philosophy. The present volume, the fifth in the edition, presents Proclus' commentary on the Timaeus, dealing with Proclus' account of static and flowing time; we see Proclus situating Plato's account of the motions of the stars and planets in relation to the astronomical theories of his day. The volume includes a substantial introduction, as well as notes that will shed new light on the text. (shrink)

This is a commentary on Mathias Frisch's book Causal Reasoning in Physics (Cambridge 2014). This commentary was presented at the 2016 Pacific Division Meeting of the American Philosophical Association in a session sponsored by the Society for the Metaphysics of Science.

Simplicius’ project of harmonizing previous philosophers deserves to be taken seriously as both a philosophical and an interpretive project. Simplicius follows Aristotle himself in developing charitable interpretations of his predecessors: his distinctive project, in the Neoplatonic context, is the rehabilitation of the Presocratics (especially Parmenides, Anaxagoras and Empedocles) from a Platonic-Aristotelian perspective. Simplicius’ harmonizations involve hermeneutic techniques which are recognisably those of the serious historian of philosophy; and harmonization itself has a distinguished history as a constructive philosophical method.

Responds to the article by Brad Brown and Susan Perry in the August 1995 issue of `Business & Society' periodical on the measure of corporate social responsibility (CSP).

Mathias Risse’s On Global Justice is a unique and important contribution to the growing literature on global justice. Risse’s approach to a variety of topics, ranging from domestic justice and common ownership of the earth, to immigration, human rights, climate change, and labour rights, is one that conceives of global justice as a philosophical problem. In this commentary I focus on a number of reservations I have about approaching global justice as a philosophical rather than an inherently practical problem. (...) To his credit Risse does acknowledge at various stages of the book that a good deal of the applied terrain he ventures into presupposes complex and contentious empirical assumptions. A greater emphasis on those points would, I believe, helpfully reveal the shortcomings of tackling intellectual property rights by appealing to Hugo Grotius’s stance on the ownership of seas, or the shortcomings of tackling health by invoking the language of human rights without acknowledging and addressing the constraints and challenges of promoting health in an aging world. (shrink)

The drive for human connection and to discover one’s identity is not limited to the online world: It is a universal human need that we all share. It is crucial to understand that problems we typically attribute to gaming platforms (like self-radicalisation) are not special tech problems or gaming problems. They can and do happen offline as well. What we are dealing with is essentially a human problem that so happens to occur on technological platforms.

The results of a recent survey of Nigerian women might give pause to opponents of female genital mutilation (FGM). One could well argue that if these Nigerian women themselves favour FGM, then it is ironically paternalistic to oppose it. Should Western feminists actually support FGM if it is what women in the South want? I argue in this commentary that such an argument rests on shaky statistical, psychological, medical, political and philosophical grounds. We should go on opposing female genital (...) mutilation with all our power. (shrink)

REMARKS ON EVOLUTION AND TIME-SCALES, Graham Cairns-Smith; HODGSON'S BLACK BOX, Thomas Clark; DO HODGSON'S PROPOSITIONS UNIQUELY CHARACTERIZE FREE WILL?, Ravi Gomatam; WHAT SHOULD WE RETAIN FROM A PLAIN PERSON'S CONCEPT OF FREE WILL?, Gilberto Gomes; ISOLATING DISPARATE CHALLENGES TO HODGSON'S ACCOUNT OF FREE WILL, Liberty Jaswal; FREE AGENCY AND LAWS OF NATURE, Robert Kane; SCIENCE VERSUS REALIZATION OF VALUE, NOT DETERMINISM VERSUS CHOICE, Nicholas Maxwell; COMMENTS ON HODGSON, J.J.C. Smart; THE VIEW FROM WITHIN, Sean Spence; COMMENTARY ON HODGSON, Henry (...) Stapp. (shrink)

Covers Essays 1 to 6 in Proclus' Commentary and includes a general introduction to the work as a whole.

I respond to the commentaries on 'Grace de Laguna's Analytic and Speculative Philosophy' offered by Peter Olen [2023], Trevor Pearce, Anthony Fisher, Marguerite La Caze and Frederique Janssen-Lauret. In doing so, I bring out some of the value of de Laguna’s perspectivism and of her treatment of modality. I also further clarify how she departs from pragmatism and from analytic philosophy, and how she relates to continental philosophy.

Gruber et al. (2022) and Buonomano and Rovelli (Forthcoming) aim to render Q18 consistent the picture of time delivered to us by physics, with the way time seems to us in experience. Their general approach is similar; they take the picture of our world given to us in physics, a picture on which there is no global “moving” present and hence no robust temporal flow, and attempt to explain why things nevertheless seem to us as they do, given that our (...) world is that way. In this, they follow in the footsteps of Hartle (2005), Callender (2017), and Ismael (2017), who argue that any information gathering system (an IGUS) will, in learning to navigate our world, represent the distinctions between past, present, and future, and represent their own changing trajectory through spacetime. While we are generally very sympathetic to this approach, there are several places where we disagree. (shrink)

In their article “Out of nowhere: thought insertion, ownership and context-integration”, Jean-Remy Martin & Elisabeth Pacherie criticize the standard approach to thought insertion. However, their criticism is based on a misunderstanding of what the standard approach actually claims. By clarifying the notions ‘sense of ownership’ and ‘sense of agency’, I show that Martin & Pacherie’s own approach can be construed as a refined version of the standard approach.

Corlett (2019) raises two groups of challenges against the two-factor theory of delusions: One focuses on weighing “the evidence for … the two-factor theory”; the other aims to question “the logic of the two-factor theory” (p. 166). McKay (2019) has robustly defended the two-factor theory against the first group. But the second group, which Corlett believes is in many aspects independent of the first group and Darby (2019, p. 180) takes as “[t]he most important challenge to the two-factor theory raised (...) by Dr. Corlett”, has by large remained. Here I offer my two cents in response to the second group. More specifically, I argue that Corlett’s challenges to the logic of the two-factor theory, concerning modularity, double dissociation and cognitive penetration, seem to be based on some misunderstandings of the two-factor theory. (shrink)

We define a set of things of one singular kind as the set of all things that can causally affect one another. To enable causal interaction between such sets, we define a thing that is of a non-singular kind as consisting of more than one singular kind. Such a thing of a non-singular kind supervenes on things of singular kinds and is open to causally intervene between sets of things of different singular kinds without violating the definition of a set (...) of things of one singular kind. With the empty set as a set of things of one singular kind, we define Mem as ‘either the smallest element of intervening sets in the indefinite set of sets of things of a singular kind and the intermediate supervening sets, or, if nothing exists, the empty set’. Thus, Mem exists. Comment. The argument focuses on a definition of a supervening set of things of a non-singular kind. Besides that, it really only claims that if we define Mem as some set of existing things or the set without elements, Mem exists. That, though, is tautological. The argument, thus, can only be interesting if anything besides the empty set exists. That only the empty set would exist, however, is refuted by this very claim. (shrink)

There is a long standing controversy in education as to whether education ought to be teacher- or student- centered. Interestingly, this controversy parallels the parent- vs. child-centered theoretical swings with regard to good parenting. One obvious difference between the two poles is the mode of communication. “Authoritarian” teaching and parenting strategies focus on the need of those who have much to learn to “do as they are told,” i.e. the authority talks, the child listens. “Non-authoritarian” strategies are anchored in the (...) assumption that youngsters ought to be encouraged to develop their natural interests and talents and hence that it is important to allow the children to do the talking and that adults listen. Both strategies seemed flawed due to the absence of the inherent wisdom of its opposing view. This chasm can be overcome. The Community of Inquiry, a pedagogical method used in Philosophy for Children, demands a method of communication which is able to bridge this gap. A Community of Inquiry is neither teacher-centered and controlled nor student-centered and controlled, but centered on and controlled by the demands of truth. Truth is absolutely essential to this method; it is only because of progress toward truth that participants are ultimately convinced of the fruitfulness of the process. Truth, however, is a hard taskmaster; it places severe restrictions on participants and puts exacting demands on the facilitator. These inherent restrictions and demands are too often underplayed, overlooked and sometimes seemingly overtly denied by those who, quite correctly emphasize that ultimately this method depends on maintenance and enhancement of student autonomy. This underrating of the role of the facilitator has led to a severe undervaluing of this otherwise brilliant pedagogical method, but worse, it has left novice teacher/facilitators ill prepared to utilize this method successfully. (shrink)

I show that general relativity and quantum mechanics, broadly construed, are consistent in relation to the singularities inside of black holes, if the singularities inside of black holes are interfaces.

In this short piece I provide an interpretation of David Lewis' thesis of Composition as Identity.

Sterelny and Hiscock (S&H) argue against the centrality of high-fidelity copying in cumulative culture. I address one key strand of their case, the decoupling of expertise from precise imitation. This advances understanding of hominin skill acquisition, and underlines a puzzle about domain-specificity.

I welcome with great enthusiasm Meling and Scheidegger’s (2023; henceforth “M&S”) timely contribution to advance an enactive approach to psychedelic therapy, especially to the complex causality involved. Their two main research questions concerned:(i) the causal interaction between the psychedelic molecule and brain activity; and (ii) the causal interaction between brain activity and the psychedelic experience. While I largely agree with and celebrate much of what is proposed by M&S, especially their employment of key enactive concepts to advance our understanding of (...) the first research question, in the following, I will present some worries regarding their answers to the second. Although I agree that there is probably a two-way reciprocal relationship between neural activity and experience, I have several points of contention regarding M&S’s proposal. My hope is to stimulate discussion on M&S’s important contribution, and to help advance a much-needed enactive science of psychedelics. (shrink)

In his rich and suggestive paper, Alvaro Vallejo argues for the novel thesis that Plato posits a form of pleasure in the Republic and the Philebus. Vallejo argues that the notion of a Platonic form of pleasure best explains other things that Plato says about pleasure. First, Plato draws a distinction between true pleasure and the appearance of pleasure. Second, Plato uses the same language to describe the relationship between forms and their inferior instantiations as he uses to describe the (...) relationship between true and false pleasures. In these comments, I argue that we do not need to posit a form of pleasure to explain these features of the text. Moreover, I argue that on Vallejo’s account of the form of pleasure, the form could not do the job required of it, namely, it could not explain the problem with false pleasures. (shrink)

Evaluates a criticism based on privacy and other ethical grounds of Bond's study using 61 million persons on Facebook to determine whether political mobilization messages shared on social media can influence voting behavior.

The insightful commentaries to our contribution "Education as the Social Cultivation of Intellectual Virtue" (in 'Social Virtue Epistemology', (eds.) M. Alfano, C. Klein & J. de Ridder, Routledge 2022) offered by Alessandra Tanesini and Lani Watson highlight some important aspects of the work that philosophers, education theorists, and educators should carry out to strengthen the theoretical and practical advantages of the educational approach we have proposed. This commentary briefly addresses a few points that could set the grounds for future (...) investigations on intellectual virtue-based approaches to education and their social dimensions. (shrink)

This paper focuses on the history of dzogchen within the heart essence tradition.

Prof. Cohen and I answer six questions: (1) Why do we lock people up? (2) How can involuntary civil commitment be reconciled with people's constitutional right to liberty? (3) Why don't we treat homicide as a public health threat? (4) What is the difference between legal and medical approaches to mental illness? (5) Why is mental illness required for involuntary commitment? (6) Where are we in our efforts to understand the causes of mental illness?

A complimentary assessment of Blum's award-winning book about racism and its affects. Well written as it is, it needs to be supplemented with a definition of racial injustice, and also to analyze racism not only on the level of individual morality but from a human rights perspective that discredits political and economic motives for racism (e.g., by drawing on Hannah Arendt's Origins of Totalitarianism).

How does Socrates conceive of the good of the city-state in the Republic? Does he conceive of the city as a kind of organic entity, with a good of its own that is independent of the good of the citizens? Or does he think the good of the city includes the good of the citizens. If so, how? Santas argues that the good of the city must include the good of the citizens. Specifically, he argues that the city is organized (...) so that the citizens can attain a great good: the ability to do well the work for which they are best suited by nature and education. In these comments, I raise a challenge for Santas’s interpretation and I provide an alternative account of how the good of the city includes the good of the citizens. On my view, the city is organized so that all of the citizens can attain what is in fact the greatest good for the individual: virtue and the rule of reason. (shrink)

Acknowledging with Professor Clay the important methodological principle that interpretation must begin within the dramatic horizon of each dialogue, I argue that there are analogies between discontinuities within single dialogues and discontinuities between certain dialogues. Recognizing this opens up the possibility of thinking of certain groups of dialogues as a series of fresh beginnings that lead the reader through different levels of understanding. I illustrate this idea by considering the unity of the Republic and the Parmenides.

Frank Jackson uses the a priori entailment thesis to connect metaphysics and conceptual analysis. In the book he develops this thesis within the two-dimensional framework and also proposes a formal argument for it. I argue that the two-dimensional framework doesn’t provide independent support for the a priori entailment thesis since one has to build into the framework assumptions as strong as the thesis itself.

In the present volume Proclus comments on the creation of the body of the universe in Plato's Timaeus.

Normative theories can be useful in developing descriptive theories, as when normative subjective expected utility theory is used to develop descriptive rational choice theory and behavioral game theory. “Ought” questions are also the essence of theories of moral reasoning, a domain of higher mental processing that could not survive without normative considerations.

This paper is a response to a commentary by Walter Glannon (2016, Frontiers in Human Neuroscience) on my paper "Stabilizing Constructs Across Research Fields as a Way to Foster the Integrative Approach of the Research Domain Criteria Project".