With the potential to process the world's agricultural and food waste, provide sustainable fodder for livestock, aquaculture, and pet animals, as well as act as a source of novel biomolecules, the black soldier fly, Hermetia illucens, has been launched into the leading position within the insects as feed industry. Fulfilment of these goals, however, requires mass‐rearing facilities to have a steady supply of neonate larvae, which in‐turn requires an efficient mating process to yield fertile eggs; yet, little is known about (...) adult reproductive behavior, nor what physiological factors lead to its emergence. Moreover, fertile egg production tends to be highly variable in colony. Therefore, this review brings together what is currently known of the organismal biology of H. illucens, compiling information on adult morphology, physiology, biogeography, genomics, and behavioral ecology. As a holistic synthesis, it highlights several directions of interest for research to follow. (shrink)

The American Journal of Bioethics, Volume 12, Issue 2, Page 30-31, February 2012.

In many learning or inference tasks human behavior approximates that of a Bayesian ideal observer, suggesting that, at some level, cognition can be described as Bayesian inference. However, a number of findings have highlighted an intriguing mismatch between human behavior and standard assumptions about optimality: People often appear to make decisions based on just one or a few samples from the appropriate posterior probability distribution, rather than using the full distribution. Although sampling-based approximations are a common way to implement Bayesian (...) inference, the very limited numbers of samples often used by humans seem insufficient to approximate the required probability distributions very accurately. Here, we consider this discrepancy in the broader framework of statistical decision theory, and ask: If people are making decisions based on samples—but as samples are costly—how many samples should people use to optimize their total expected or worst-case reward over a large number of decisions? We find that under reasonable assumptions about the time costs of sampling, making many quick but locally suboptimal decisions based on very few samples may be the globally optimal strategy over long periods. These results help to reconcile a large body of work showing sampling-based or probability matching behavior with the hypothesis that human cognition can be understood in Bayesian terms, and they suggest promising future directions for studies of resource-constrained cognition. (shrink)

If Bayesian Fundamentalism existed, Jones & Love's (J&L's) arguments would provide a necessary corrective. But it does not. Bayesian cognitive science is deeply concerned with characterizing algorithms and representations, and, ultimately, implementations in neural circuits; it pays close attention to environmental structure and the constraints of behavioral data, when available; and it rigorously compares multiple models, both within and across papers. J&L's recommendation of Bayesian Enlightenment corresponds to past, present, and, we hope, future practice in Bayesian cognitive science.

Hierarchical Bayesian models (HBMs) provide an account of Bayesian inference in a hierarchically structured hypothesis space. Scientific theories are plausibly regarded as organized into hierarchies in many cases, with higher levels sometimes called ‘paradigms’ and lower levels encoding more specific or concrete hypotheses. Therefore, HBMs provide a useful model for scientific theory change, showing how higher‐level theory change may be driven by the impact of evidence on lower levels. HBMs capture features described in the Kuhnian tradition, particularly the idea that (...) higher‐level theories guide learning at lower levels. In addition, they help resolve certain issues for Bayesians, such as scientific preference for simplicity and the problem of new theories. *Received July 2009; revised October 2009. †To contact the authors, please write to: Leah Henderson, Massachusetts Institute of Technology, 77 Massachusetts Avenue, 32D‐808, Cambridge, MA 02139; e‐mail: [email protected]. (shrink)

Learning to understand a single causal system can be an achievement, but humans must learn about multiple causal systems over the course of a lifetime. We present a hierarchical Bayesian framework that helps to explain how learning about several causal systems can accelerate learning about systems that are subsequently encountered. Given experience with a set of objects, our framework learns a causal model for each object and a causal schema that captures commonalities among these causal models. The schema organizes the (...) objects into categories and specifies the causal powers and characteristic features of these categories and the characteristic causal interactions between categories. A schema of this kind allows causal models for subsequent objects to be rapidly learned, and we explore this accelerated learning in four experiments. Our results confirm that humans learn rapidly about the causal powers of novel objects, and we show that our framework accounts better for our data than alternative models of causal learning. (shrink)

Hierarchical Bayesian models (HBMs) provide an account of Bayesian inference in a hierarchically structured hypothesis space. Scientific theories are plausibly regarded as organized into hierarchies in many cases, with higher levels sometimes called ‘para- digms’ and lower levels encoding more specific or concrete hypotheses. Therefore, HBMs provide a useful model for scientific theory change, showing how higher-level theory change may be driven by the impact of evidence on lower levels. HBMs capture features described in the Kuhnian tradition, particularly the idea (...) that higher-level theories guide learning at lower levels. In addition, they help resolve certain issues for Bayesians, such as scientific preference for simplicity and the problem of new theories. (shrink)

Collected and edited by Noah Levin -/- Table of Contents: -/- UNIT ONE: INTRODUCTION TO CONTEMPORARY ETHICS: TECHNOLOGY, AFFIRMATIVE ACTION, AND IMMIGRATION 1 The “Trolley Problem” and Self-Driving Cars: Your Car’s Moral Settings (Noah Levin) 2 What is Ethics and What Makes Something a Problem for Morality? (David Svolba) 3 Letter from the Birmingham City Jail (Martin Luther King, Jr) 4 A Defense of Affirmative Action (Noah Levin) 5 The Moral Issues of Immigration (B.M. Wooldridge) 6 The (...) Ethics of our Digital Selves (Noah Levin) -/- UNIT TWO: TORTURE, DEATH, AND THE “GREATER GOOD” 7 The Ethics of Torture (Martine Berenpas) 8 What Moral Obligations do we have (or not have) to Impoverished Peoples? (B.M. Wooldridge) 9 Euthanasia, or Mercy Killing (Nathan Nobis) 10 An Argument Against Capital Punishment (Noah Levin) 11 Common Arguments about Abortion (Nathan Nobis & Kristina Grob) 12 Better (Philosophical) Arguments about Abortion (Nathan Nobis & Kristina Grob) -/- UNIT THREE: PERSONS, AUTONOMY, THE ENVIRONMENT, AND RIGHTS 13 Animal Rights (Eduardo Salazar) 14 John Rawls and the “Veil of Ignorance” (Ben Davies) 15 Environmental Ethics: Climate Change (Jonathan Spelman) 16 Rape, Date Rape, and the “Affirmative Consent” Law in California (Noah Levin) 17 The Ethics of Pornography: Deliberating on a Modern Harm (Eduardo Salazar) 18 The Social Contract (Thomas Hobbes) -/- UNIT FOUR: HAPPINESS 19 Is Pleasure all that Matters? Thoughts on the “Experience Machine” (Prabhpal Singh) 20 Utilitarianism (J.S. Mill) 21 Utilitarianism: Pros and Cons (B.M. Wooldridge) 22 Existentialism, Genetic Engineering, and the Meaning of Life: The Fifths (Noah Levin) 23 The Solitude of the Self (Elizabeth Cady Stanton) 24 Game Theory, the Nash Equilibrium, and the Prisoner’s Dilemma (Douglas E. Hill) -/- UNIT FIVE: RELIGION, LAW, AND ABSOLUTE MORALITY 25 The Myth of Gyges and The Crito (Plato) 26 God, Morality, and Religion (Kristin Seemuth Whaley) 27 The Categorical Imperative (Immanuel Kant) 28 The Virtues (Aristotle) 29 Beyond Good and Evil (Friedrich Nietzsche) 30 Other Moral Theories: Subjectivism, Relativism, Emotivism, Intuitionism, etc. (Jan F. Jacko). (shrink)

This collection of essays, offered in honor of the distinguished career of prominent political philosophy professor Clifford Orwin, brings together internationally renowned scholars to provide a wide context and discuss various aspects of the virtue of “humanity” through the history of political philosophy.

This collection of essays, offered in honor of the distinguished career of prominent political philosophy professor Clifford Orwin, brings together internationally renowned scholars to provide a wide context and discuss various aspects of the virtue of “humanity” through the history of political philosophy.

Topics in Cognitive Science, Volume 14, Issue 3, Page 574-601, July 2022.

Hierarchical Bayesian models provide an account of Bayesian inference in a hierarchically structured hypothesis space. Scientific theories are plausibly regarded as organized into hierarchies in many cases, with higher levels sometimes called ‘paradigms’ and lower levels encoding more specific or concrete hypotheses. Therefore, HBMs provide a useful model for scientific theory change, showing how higher-level theory change may be driven by the impact of evidence on lower levels. HBMs capture features described in the Kuhnian tradition, particularly the idea that higher-level (...) theories guide learning at lower levels. In addition, they help resolve certain issues for Bayesians, such as scientific preference for simplicity and the problem of new theories. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Jewish Thought and Scientific Discovery in Early Modern EuropeNoah J. EfronAlmost a quarter-century ago Benjamin Nelson published his famous plea for what he called a “differential” and “comparative historical sociology of ‘science’ in civilizational perspective.” 1 Like Max Weber, Robert Merton, and Joseph Needham, Nelson believed that the growth of western science could be better understood when compared to the ways “science” fared in other cultures with other intellectual (...) and institutional and economic sensibilities and structures. A particularly propitious case study for such a differential and comparative historical study of science, as Hillel Levine observed in his 1983 essay about Jewish reactions to heliocentrism, are the Jews of early modern Europe, who constituted “a society geographically and culturally contiguous with those who framed and advanced occidental ‘science.’” 2Since about the time of Nelson’s plea, David B. Ruderman has been writing the history of Jewish attitudes towards, and engagements with, science during the period in which modern western science was constituting itself. It is no exaggeration to say that he established this as a field of study, producing a steady stream of historical studies, initially of Italian Jews who read and wrote about nature and its study, but continually expanding his compass. 3 The field [End Page 719] Ruderman established and the studies he produced have been “repercussive” (to borrow his own adjective) in many directions—shedding light on Jewish-Christian relations, on early-modern Jewish intellectual history, on the deployments of Kabbalah and magic in early modern times, and so on. One of Ruderman’s achievements—perhaps not the most important in his view (for he considers himself a historian of Jewish thought and culture and not a historian of science) but of great importance nonetheless—has been to begin to lay the groundwork for a comparative history of Jewish and Christian attitudes towards and participation in the “new sciences.”Ruderman’s newest book is a big step towards Nelson’s desideratum, using Jewish attitudes as the comparative case. It is a collection of twelve linked essays (five of which have appeared elsewhere in one form or another) framed by a synthetic introduction and epilogue. The essays are individual or group portraits of Jews who evinced interest in natural philosophy or medicine, in a variety of settings and for a variety of reasons, between the sixteenth and eighteenth centuries. Ruderman describes his subject as “three distinct but interrelated groups among early modern Jews”: (1) “converso physicians and other university-trained intellectuals who fled Spain and Portugal in the seventeenth century and settled in Holland, Italy, Germany, England, and even eastern Europe, serving as doctors and purveyors of scientific learning throughout the Jewish communities of Europe, while yielding considerable political and economic power,” (2) “certain circles of Jewish scholars in central and eastern Europe [who] pursued scientific learning, especially astronomy, in more informal settings as a desirable supplement to rabbinic study,” and (3) “the hundreds of Jews who attended Italian medical schools, primarily the University of Padua, from the late sixteenth through the eighteenth centuries.” 4In fact Ruderman covers even more ground than this. As background, he includes a brief essay on the attitudes of tenth- to fifteenth-century Jews towards nature and its study, surely the best survey of the sort available. Of the thirty or so early modern Jews that he describes in the remainder of the book, about twenty fit in at least one of the three camps upon which he focuses. 5 Nine [End Page 720] emerged from different circumstances (though these too were often highly influenced by one or more of the focus populations). This fact does nothing to impugn Ruderman’s typology—the groups he described were, in fact, of particular importance, and his identification of them as the principle populations contemplating and promulgating natural philosophy among Jews is in itself an advance of some moment. But the fact that a third of the cases Ruderman described do not fit into his own typology is testimony both to the complexity of his subject, and to his agility in addressing it.By anthologizing a dozen depictions of different thinkers in different milieus, Ruderman affords what might be called a “hawk... (shrink)

One hundred eighty trauma-focused dissertations published in the United States were examined to determine the variation in risk language used in the informed consents. Level of risk proposed in the informed consents was poorly related to ratings of risk by graduate coders and virtually unrelated to vulnerability factors such as the age of participants and clinical or nonclinical status. Risk language in the informed consents was markedly elevated over that rated by the coders, with more than one third of the (...) dissertations presenting the risk of participation as severe (i.e., associated with substantial risk of reactivity and lasting discomfort). These statements are not in keeping with the literature and raise ethical concerns in relation to (a) nocebo effects, (b) distortion of correlational findings, and (c) discouragement of participants from disclosing trauma in other settings. (shrink)

The aim of this article is to address the recently renewed debate pertaining to esotericism, secret messages encoded within writings from antiquity, especially in the writings of Plato. The question of esotericism has assumed a prominent role within debates concerning the history of political thought. Ever since Leo Strauss offered his suspicion that there were secrets ‘buried in the writings of the rhetoricians of antiquity’, the idea that philosophers deliberately concealed their true beliefs in a way that few could detect (...) has been fiercely debated. More recently, the research of J.B. Kennedy has made international headlines for discovering a musical pattern embedded within Platonic writings, a pattern that Kennedy insists is evidence of Plato’s Pythagorean allegiance. The theses proffered by Strauss and Kennedy are empty doctrines of esotericism, or empty esotericisms. These doctrines insinuate the presence of secret or coded writing within Platonic dialogues but reveal no actual secret. These theses of esotericism falsely represent Plato as hyper-cryptic.Without actually providing substantive content, these notions of esotericism compel the reader to merely negate the exoteric writings of Plato, which actually render his already heterodox writings as commonplace and orthodox. (shrink)

How ought we to respond to other people caring about whatever it is that they care about – even if they care about things that are obviously not careworthy?2 For example, if my neighbor cares about collecting antique decorative saltshakers and I think this is an idiotic pastime, how ought I to respond to this? My thesis is that I should respond by accommodating his cares.3 I describe accommodation as follows: [Accommodation] A accommodates B’s caring about F by adjusting her (...) behavior in deference to B’s caring about F.4 So, the thesis I defend in this paper is the following. (shrink)

When the Neo- or "New Atheist" publishing frenzy climaxed with Richard Dawkins' The God Delusion, Daniel C. Dennett's Breaking the Spell, Sam Harris's The End of Faith, Christopher Hitchens' god is not Great and subsequent titles; New Atheists repeatedly denounced the Bible as dangerously false, suppressive to scientific inquiry, and as inculcating and promoting problematic, contemptible, even abhorrent moral values. The Genesis 1-11 and 19 Creation, Noah, and Lot narratives persist among the New Atheists' favorite targets. Heretofore there has (...) been no systematic examination of New Atheist treatments of Genesis generally or Genesis 1-11 and 19 particularly. This article scrutinizes leading New Atheist interpretations of Genesis 1-11 and 19 articulated by Richard Dawkins, Daniel C. Dennett, Sam Harris, and Christopher Hitchens. Part one documents these New Atheist renderings of Genesis 1-11 and 19 through the entire corpus of their published books. Part two synthesizes, applies, and extends relevant Genesis 1-11 and 19 scholarship to appraise and respond to the most serious New Atheist allegations, concluding that a more rigorous analysis of Genesis 1-11 and 19 nullifies and potentially reverses New Atheist criticisms. (shrink)

Epistemology or the theory of knowledge is one of the cornerstones of analytic philosophy, and this book provides a clear and accessible introduction to the subject. It discusses some of the main theories of justification, including foundationalism, coherentism, reliabilism, and virtue epistemology. Other topics include the Gettier problem, internalism and externalism, skepticism, the problem of epistemic circularity, the problem of the criterion, a priori knowledge, and naturalized epistemology. Intended primarily for students taking a first class in epistemology, this lucid and (...) well-written text would also provide an excellent introduction for anyone interested in knowing more about this important area of philosophy. (shrink)

In this 2004 book, Noah Lemos presents a strong defense of the common sense tradition, the view that we may take as data for philosophical inquiry many of the things we ordinarily think we know. He discusses the main features of that tradition as expounded by Thomas Reid, G. E. Moore and Roderick Chisholm. For a long time common sense philosophers have been subject to two main objections: that they fail to give any non-circular argument for the reliability of (...) memory and perception; and that they pick out instances of knowledge without knowing a criterion for knowledge. Lemos defends the appeal to what we ordinarily think we know in both epistemology and ethics and thus rejects the charge that common sense is dogmatic, unphilosophical or question-begging. Written in a clear and engaging style, this book will appeal to students and philosophers in epistemology and ethics. (shrink)

The History of Islam, which makes use of the Qur’ān, ḥadīth and many auxiliary sources, did not ignore the different elements that would shed light on the events of the periods it studied. At this point, the poem draws attention as an important source containing much data on the history of the prophets, sīrat, genealogy, and socio-cultural life. Umayya b. Abū l-Ṣalt (d. 8/630) is an important poet who has witnessed both the Jāhilī Period and the Islamic period, and has (...) poems containing the above-mentioned themes. There are different opinions about his belief status. In this context, there are discourses that consider him as Christian, Jewish, Hanīf, and monotheist. However, although it is a fact that Umayya was a ḥanīf in Jāhilī Period, his oppositional attitude with the advent of Islam is another fact. In the historical sources, there are many poems which are attributed to Umayya and contain different subjects. When these poems are examined, especially the poems that deal with the belief of oneness and the hereafter; it is seen that the creation of the world, the lives of past tribes and prophets, sīrat, some cultural elements, elegy, praise, and lineage were also handled by him. However, when the content and style of Umayya's poems, especially about the lives of the prophets, are examined, there are doubts as to whether these poems belong to him. For example, his poem about the story of Adam is as follows: “And they all prostrated to Adam by His permission / Only the damned, the sinner, and the expelled refused it /The Lord of the servants said to Iblis: / Get out of there fired, cursed and vilified.” When compared with the verses of the Qur'ān, it is seen that the information presented by Umayya about the story of Adam does not contradict with the information in the Qur'ān. “It is We Who created you and gave you shape; then We bade the angels prostrate to Adam, and they prostrate; not so Iblis; He refused to be of those who prostrate.” “(Allāh) said: "Get thee down from this: it is not for thee to be arrogant here: get out, for thou art of the meanest (of creatures).” In Umayya's poems, the story of Noah is discussed in with more details: “In the evening the flood was sent and the water overflowed. / There was no container to hold it. / He swims like an arrow seeking revenge. / And crossing the sea. / Everything began to speak with a miracle. / And the crow responded to the rooster's trust with treason. / After seven days the dove was sent / That; was unafraid of dangers and showed courage. / It was said, let's search the earth / Can you find a dry place with a water source in its furthest part? / Flew away fast. / Then he brought a cluster of black sticky mud on it.” In the poems of Umayya, in which he talks about the stories of the Prophet, many words and stories that the Arabs do not know are used. The story of the crow, rooster, and pigeon in this poem is one such example. It is said that Umayya was influenced by the old books and the words of the People of the Book in the story about the crow, the rooster, and the pigeon. Because, although there are differences in the details, it is seen that this issue is mentioned in the Torāh. Cevād Ali, who touches on this issue, states that “if it is true that these poems belong to him” and says that the available data is evidence that Umayya met with the People of the Book and knew the content of their books. While evaluating this issue, Behcet Abdulagafur referred to the 49th verse of the Surah Hūd and he emphasized two possibilities, pointing out that the story was not known to people before, including the Prophet Muḥammad: Umayya recited them from the Qur'ān and sang his poems according to the Qur'ān. However, this is a low probabilirty. Or, this poem does not belong to him and was later made up for him. He saw the second option more strongly and said that the poem did not resemble Umayya's style as a reason. The Prophet avoided a wholesale approach and evaluated Umayya's poems according to their content. Because while approving some of his poems, he also banned his poems that he sang as a lament for the polytheists killed in Badr, which did not comply with the Islamic understanding. The Prophet said about him: “His poetry became a Muslim, but his heart denied it.” Thus, while revealing that the content of Umayya's poems is generally suitable for Islam, he also stated that he was not a Muslim. At the same time, he banned his poems that were against Islam. (shrink)

I examine issues in the philosophy of religion at the intersection of what possibilities there are and what a God, as classically conceived in the theistic philosophical tradition, would be able to do. The discussion is centered around arguing for an incompatibility between theism and two principles about possibility and ability, and exploring what theists should say about these incompatibilities. -/- I argue that theism entails that certain kinds and amounts of evil are impossible. This puts theism in conflict with (...) popular principles of modal recombination. However, theists have plausible explanations for the violations of recombination that they posit, and can suitably amend these principles without giving up their usefulness in accounting for what possibilities there are. -/- I also argue that despite the impossibility of these evils, God is able to bring these evils about. This puts theism in conflict with the principle that no one is able to do the impossible. However, theists can give a plausible account of why God is unique in being able to do the impossible, and have distinctive resources to address the arguments in favor of the idea that no one is able to do the impossible. And by denying this principle, theists are able to resolve several otherwise difficult puzzles, including reconciling conflicts between the divine attributes. (shrink)

In ”Epistemology and Ethics,” Noah Lemos suggests that moral epistemology is mainly concerned with “whether and how we can have knowledge or justified belief” about moral issues. After addressing skeptical arguments, he considers how the moral epistemologist and moral philosopher should begin their account of moral knowledge. Lemos favors a particularist approach whereby we begin with instances of moral knowledge and use these to formulate and evaluate criteria for moral knowledge. After relating his approach to concerns about the nature (...) of the epistemic justification of moral beliefs as dealt with by foundationalists and coherentists, Lemos responds to arguments against particularist approaches in moral epistemology. Specifically, he addresses the claim that our moral beliefs must receive their justification from an independent moral criterion developed from nonmoral beliefs. (shrink)

Guynn offers an innovative new approach to the ethical, cultural, and ideological analysis of medieval allegory. Working between poststructuralism and historical materialism, he considers both the playfulness of allegory (its openness to multiple interpretations and perspectives) and its disciplinary force (the use of rhetoric to naturalize hegemonies and suppress difference and dissent). Ultimately, he argues that both tendencies can be linked to the consolidation of power within ruling class institutions and the persecution of demonized others, notably women and sexual minorities. (...) The book examines a number of centrally canonical works, including the verse romance Eneas , Alan of Lille’s De planctu Naturae , The Romance of the Rose , and the Querelle de la Rose. (shrink)

The sages of Israel and natural wisdom -- Jews and natural philosophy -- Jews and science.

In this essay, I argue that, all else being equal, theism is more probable than naturalism on the assumption that human beings are able to arrive at a body of moral knowledge that is largely accurate and complete. I put forth this thesis on grounds that, if naturalism is true, the explanation of the content of our moral intuitions terminates either in biological-evolutionary processes or in social conventions adopted for pragmatic reasons; that, if this is so, our moral intuitions were (...) selected for their utility, not their truth; and that, if our moral intuitions were so selected, they are probably false. I defend the argument against three objections: first, that the argument amounts to a generic skeptical challenge; second, that ethical naturalism explains how our moral intuitions could have been selected for their truth; and third, that there is a pre-established harmony between the utility of moral beliefs and their truth-values. (shrink)

Is language understanding a special case of social cognition? To help evaluate this view, we can formalize it as the rational speech-act theory: Listeners assume that speakers choose their utterances approximately optimally, and listeners interpret an utterance by using Bayesian inference to “invert” this model of the speaker. We apply this framework to model scalar implicature (“some” implies “not all,” and “N” implies “not more than N”). This model predicts an interaction between the speaker's knowledge state and the listener's interpretation. (...) We test these predictions in two experiments and find good fit between model predictions and human judgments. (shrink)

Abstract: In this essay, I outline and defend a version of the aesthetic argument for the existence of God, according to which theism explains our capacity for subjective aesthetic experience better than its major competitor, naturalism. I argue that naturalism fails to adequately explain the nature and range of our aesthetic experiences, since these are amenable neither to standard Darwinian explanation nor to explanation in terms of more complex sociobiological mechanisms such as sexual selection or between-group selection. I concede that (...) aesthetic experience may be an evolutionary spandrel but argue that the conjunction of this thesis with naturalism is highly improbable given the prevalence of beauty in the natural world. Theism, on the other hand, furnishes a robust personal explanation of aesthetic experience, since on theism God has both good reasons to bring such experiences about and the power to do so. I address an objection to the theistic explanation from broadly negative aesthetic experiences, arguing that God plausibly has many reasons to allow these. I contend that this formulation of the argument is superior to other extant versions, since it does not depend on controversial probability judgments, dubious analogies between natural phenomena and human artefacts, or objectivism about aesthetic values. (shrink)

I argue for the viability of one neglected way of developing supervenience-based objections to metaethical non-naturalism. This way goes through a principle known as ‘Hume’s Dictum’, according to which there are no necessary connections between distinct existences. I challenge several objections to the Hume’s Dictum-based argument. In the course of doing so, I formulate and motivate modest and precise versions of Hume’s Dictum, illustrate how arguments employing these principles might proceed, and argue that the Hume’s Dictum argument enjoys some advantages (...) relative to other supervenience-based objections to non-naturalism. (shrink)

In this essay, I reply to an influential objection to evolutionary debunking arguments against moral realism. According to this objection, our capacity for autonomous rational reflection allows us to grasp moral truths independently of distorting evolutionary influences, so those influences do not prevent us from having moral knowledge. I argue that rational moral reflection is not, in fact, autonomous from evolutionary influences, since it depends on our evolved, pre-reflective grasp of moral properties. I then consider and reject the suggestion that (...) realists can supply an autonomous foundation for rational moral reflection or do without any such foundation. Next, I address the allegation that my arguments have skeptical implications for rational reflection in non-moral domains. Finally, I conclude with a gesture toward a more promising route for realists who oppose debunking arguments. (shrink)