Bidirectional deep brain stimulation (DBS) platforms have enabled a surge in hours of recordings in naturalistic environments, allowing further insight into neurological and psychiatric disease states. However, high amplitude, high frequency stimulation generates artifacts that contaminate neural signals and hinder our ability to interpret the data. This is especially true in psychiatric disorders, for which high amplitude stimulation is commonly applied to deep brain structures where the native neural activity is miniscule in comparison. Here, we characterized artifact sources in recordings (...) from a bidirectional DBS platform, the Medtronic Summit RC + S, with the goal of optimizing recording configurations to improve signal to noise ratio (SNR). Data were collected from three subjects in a clinical trial of DBS for obsessive-compulsive disorder. Stimulation was provided bilaterally to the ventral capsule/ventral striatum (VC/VS) using two independent implantable neurostimulators. We first manipulated DBS amplitude within safe limits (2–5.3 mA) to characterize the impact of stimulation artifacts on neural recordings. We found that high amplitude stimulation produces slew overflow, defined as exceeding the rate of change that the analog to digital converter can accurately measure. Overflow led to expanded spectral distortion of the stimulation artifact, with a six fold increase in the bandwidth of the 150.6 Hz stimulation artifact from 147–153 to 140–180 Hz. By increasing sense blank values during high amplitude stimulation, we reduced overflow by as much as 30% and improved artifact distortion, reducing the bandwidth from 140–180 Hz artifact to 147–153 Hz. We also identified artifacts that shifted in frequency through modulation of telemetry parameters. We found that telemetry ratio changes led to predictable shifts in the center-frequencies of the associated artifacts, allowing us to proactively shift the artifacts outside of our frequency range of interest. Overall, the artifact characterization methods and results described here enable increased data interpretability and unconstrained biomarker exploration using data collected from bidirectional DBS devices. (shrink)

Deep brain stimulation of the subthalamic nucleus is a clinically effective tool for treating medically refractory Parkinson’s disease, but its neural mechanisms remain debated. Previous work has demonstrated that STN DBS results in evoked potentials in the primary motor cortex, suggesting that modulation of cortical physiology may be involved in its therapeutic effects. Due to technical challenges presented by high-amplitude DBS artifacts, these EPs are often measured in response to low-frequency stimulation, which is generally ineffective at PD symptom management. This (...) study aims to characterize STN-to-cortex EPs seen during clinically relevant high-frequency STN DBS for PD. Intraoperatively, we applied STN DBS to 6 PD patients while recording electrocorticography from an electrode strip over the ipsilateral central sulcus. Using recently published techniques, we removed large stimulation artifacts to enable quantification of STN-to-cortex EPs. Two cortical EPs were observed – one synchronized with DBS onset and persisting during ongoing stimulation, and one immediately following DBS offset, here termed the “start” and the “end” EPs respectively. The start EP is, to our knowledge, the first long-latency cortical EP reported during ongoing high-frequency DBS. The start and end EPs differ in magnitude and latency, and the end, but not the start, EP magnitude has a significant relationship to ongoing high gamma power during the EP. These contrasts may suggest mechanistic or circuit differences in EP production during the two time periods. This represents a potential framework for relating DBS clinical efficacy to the effects of a variety of stimulation parameters on EPs. (shrink)

Followers of Wittgenstein allegedly once held that a meaningful claim to know that p could only be made if there was some doubt about the truth of p. The correct response to this thesis involved appealing to the distinction between the semantic content of a sentence and features attaching to its use. It is inappropriate to assert a knowledge-claim unless someone in the audience has doubt about what the speaker claims to know. But this fact has nothing to do with (...) the semantic content of knowledgeascriptions; it is entirely explicable by appeal to pragmatic facts about felicitous assertion. (shrink)

Could space consist entirely of extended regions, without any regions shaped like points, lines, or surfaces? Peter Forrest and Frank Arntzenius have independently raised a paradox of size for space like this, drawing on a construction of Cantor’s. I present a new version of this argument and explore possible lines of response.

Richard Jeffrey is beyond dispute one of the most distinguished and influential philosophers working in the field of decision theory and the theory of knowledge. His work is distinctive in showing the interplay of epistemological concerns with probability and utility theory. Not only has he made use of standard probabilistic and decision theoretic tools to clarify concepts of evidential support and informed choice, he has also proposed significant modifications of the standard Bayesian position in order that it provide a (...) better fit with actual human experience. Probability logic is viewed not as a source of judgment but as a framework for explaining the implications of probabilistic judgments and their mutual compatability. This collection of essays spans a period of some 35 years and includes what have become some of the classic works in the literature. There is also one completely new piece, while in many instances Jeffrey includes afterthoughts on the older essays. (shrink)

That believing truly as a matter of luck does not generally constitute knowing has become epistemic commonplace. Accounts of knowledge incorporating this anti-luck idea frequently rely on one or another of a safety or sensitivity condition. Sensitivity-based accounts of knowledge have a well-known problem with necessary truths, to wit, that any believed necessary truth trivially counts as knowledge on such accounts. In this paper, we argue that safety-based accounts similarly trivialize knowledge of necessary truths and that two ways of responding (...) to this problem for safety, issuing from work by Williamson and Pritchard, are of dubious success. (shrink)

The Face of the Other and the Trace of God contain essays on the philosophy of Emmanuel Levinas, and how his philosophy intersects with that of other philosophers, particularly Husserl, Kierkegaard, Sartre, and Derrida. This collection is broadly divided into two parts: relations with the other, and the questions of God.

This book offers a concise survey of basic probability theory from a thoroughly subjective point of view whereby probability is a mode of judgment. Written by one of the greatest figures in the field of probability theory, the book is both a summation and synthesis of a lifetime of wrestling with these problems and issues. After an introduction to basic probability theory, there are chapters on scientific hypothesis-testing, on changing your mind in response to generally uncertain observations, on expectations of (...) the values of random variables, on de Finetti's dissolution of the so-called problem of induction, and on decision theory. (shrink)

Few notions are more central to Aquinas’s thought than those of matter and form. Although he invokes these notions in a number of different contexts, and puts them to a number of different uses, he always assumes that in their primary or basic sense they are correlative both with each other and with the notion of a “hylomorphic compound”—that is, a compound of matter (hyle) and form (morphe). Thus, matter is an entity that can have form, form is an entity (...) that can be had by matter, and a hylomorphic compound is an entity that exists when the potentiality of some matter to have form is actualized.1 What is more, Aquinas assumes that the matter of a hylomorphic compound explains certain of its general characteristics, whereas its form explains certain of its more specific characteristics. Thus, the matter of a bronze statue explains the fact that it is bronze, whereas its form explains the fact that it is a statue. Again, the matter of a human being explains the fact that it is a material object, whereas its form explains the specific type of material object it is (namely, human). My aim in this chapter is to provide a systematic introduction to Aquinas’s primary or basic notions of matter and form. To accomplish this aim, I focus on the two main theoretical contexts in which he deploys them—namely, his theory of change and his theory of individuation. In both contexts, as we shall see, Aquinas appeals to matter and form to account for relations of sameness and difference holding between distinct individuals. (shrink)

Business and Society Review, Volume 127, Issue S1, Page 343-367, Spring 2022.

Jeffrey Barrett presents the most comprehensive study yet of a problem that has puzzled physicists and philosophers since the 1930s.

Eliminativists sometimes invoke evolutionary debunking arguments against ordinary object beliefs, either to help them establish object skepticism or to soften the appeal of commonsense ontology. I argue that object debunkers face a self-defeat problem: their conclusion undermines the scientific support for one of their premises, because evolutionary biology depends on our object beliefs. Using work on reductionism and multiple realizability from the philosophy of science, I argue that it will not suffice for an eliminativist debunker to simply appeal to some (...) object-free surrogate theory of evolution that results from converting any scientific proposition about some object K into a proposition about simples arranged K-wise. In the process, I examine some hazards peculiar to eliminative reductions of scientific theories, and propose a trilemma for eliminativists who attempt to recoup generality for ontologically sparse reducing theories by appealing to pluralities of simples arranged K-wise. The paper is intended to define and develop the object debunker’s self-defeat problem for further study, and to clarify some of the ways sparse and abundant ontologies interact with scientific theory. (shrink)

Conditioning can make imprecise probabilities uniformly more imprecise. We call this effect "dilation". In a previous paper (1993), Seidenfeld and Wasserman established some basic results about dilation. In this paper we further investigate dilation on several models. In particular, we consider conditions under which dilation persists under marginalization and we quantify the degree of dilation. We also show that dilation manifests itself asymptotically in certain robust Bayesian models and we characterize the rate at which dilation occurs.

The ‘Major Transitions in Evolution’ framework has emerged as the dominant paradigm for understanding the origins of life's hierarchical organization, but it has been criticized on the grounds that it lacks theoretical unity, that is, that the events included in the framework do not constitute a coherent category. I agree with this criticism, and I argue that the best response is to modify the framework so that the events it includes do comprise a coherent category, one whose members share fundamental (...) similarities. Specifically, I recommend defining major transitions as all those, and only those, events and processes that result in the emergence of a new population of evolutionary individuals. Two sorts of change will be required to achieve this. First, events and processes that do not meet this criterion, such as the origins of the genetic code and of human language, should be excluded. Second, events and processes that do meet the criterion, but which have generally been neglected, should be included. These changes would have the dual benefits of making MTEs a philosophically coherent category and of increasing the sample size on which we may infer trends and general principles that may apply to all MTEs. (shrink)

Recent calls have been made to move professional standards to a more principles-based perspective, supposing that emphasizing broad principles would eliminate the legalistic focus that rules may encourage, and accountants’ behavior would be more ethical and uniformly so. However, this supposition has yet to be empirically tested. The AICPA Code of Professional Conduct (Code) provides guidance in both forms: principles and rules. This experiment examines how the form of the Code affects independence judgments in a client acceptance context. We also (...) examine the potential for levels of moral development to influence the effectiveness of the Code.We find that subjects are more likely to consider their independence impaired, and are more likely to reject a questionable audit engagement, when rules-based (principles-based) reasoners are provided with Code rules (principles). Given the popularity of the view that rules-based standards are undesirable, these findings have significant implications for the profession as principles-based ethical standards are discussed. (shrink)

Recent calls have been made to move professional standards to a more principles-based perspective, supposing that emphasizing broad principles would eliminate the legalistic focus that rules may encourage, and accountants’ behavior would be more ethical and uniformly so. However, this supposition has yet to be empirically tested. The AICPA Code of Professional Conduct (Code) provides guidance in both forms: principles and rules. This experiment examines how the form of the Code affects independence judgments in a client acceptance context. We also (...) examine the potential for levels of moral development to influence the effectiveness of the Code.We find that subjects are more likely to consider their independence impaired, and are more likely to reject a questionable audit engagement, when rules-based (principles-based) reasoners are provided with Code rules (principles). Given the popularity of the view that rules-based standards are undesirable, these findings have significant implications for the profession as principles-based ethical standards are discussed. (shrink)

In this original and compelling book, Jeffrey P. Bishop, a philosopher, ethicist, and physician, argues that something has gone sadly amiss in the care of the dying by contemporary medicine and in our social and political views of death, as shaped by our scientific successes and ongoing debates about euthanasia and the "right to die"--or to live. __The Anticipatory Corpse: Medicine, Power, and the Care of the Dying__, informed by Foucault's genealogy of medicine and power as well as by (...) a thorough grasp of current medical practices and medical ethics, argues that a view of people as machines in motion--people as, in effect, temporarily animated corpses with interchangeable parts--has become epistemologically normative for medicine. The dead body is subtly anticipated in our practices of exercising control over the suffering person, whether through technological mastery in the intensive care unit or through the impersonal, quasi-scientific assessments of psychological and spiritual "medicine." The result is a kind of nihilistic attitude toward the dying, and troubling contradictions and absurdities in our practices. Wide-ranging in its examples, from organ donation rules in the United States, to ICU medicine, to "spiritual surveys," to presidential bioethics commissions attempting to define death, and to high-profile cases such as Terri Schiavo's, __The Anticipatory Corpse__ explores the historical, political, and philosophical underpinnings of our care of the dying and, finally, the possibilities of change. A ground-breaking work in bioethics, this book will provoke thought and argument for all those engaged in medicine, philosophy, theology, and health policy. "With extraordinary philosophical sophistication as well as knowledge of modern medicine, Bishop argues that the body that shapes the work of modern medicine is a dead body. He defends this claim decisively with with urgency. I know of no book that is at once more challenging and informative as __The Anticipatory Corpse. __To say this book is the most important one written in the philosophy of medicine in the last twenty-five years would not do it justice. This book is destined to change the way we think and, hopefully, practice medicine." --_Stanley Hauerwas, Duke Divinity School _ "Jeffrey Bishop carefully builds a detailed, scholarly case that medicine is shaped by its attitudes toward death. Clinicians, ethicists, medical educators, policy makers, and administrators need to understand the fraught relationship between clinical practices and death, and __The Anticipatory Corpse __is an essential text. Bishop's use of the writings of Michel Foucault is especially provocative and significant. This book is the closest we have to a genealogy of death." --_Arthur W. Frank, University of Calgary _ "Jeffrey Bishop has produced a masterful study of how the living body has been placed within medicine's metaphysics of efficient causality and within its commitment to a totalizing control of life and death, which control has only been strengthened by medicine's taking on the mantle of a bio-psycho-socio-spiritual model. This volume's treatment of medicine's care of the dying will surely be recognized as a cardinal text in the philosophy of medicine." --_H. Tristram Engelhardt, Jr., Rice University, Baylor College of Medicine_. (shrink)

Belief in propositions has had a long and distinguished history in analytic philosophy. Three of the founding fathers of analytic philosophy, Gottlob Frege, Bertrand Russell, and G. E. Moore, believed in propositions. Many philosophers since then have shared this belief; and the belief is widely, though certainly not universally, accepted among philosophers today. Among contemporary philosophers who believe in propositions, many, and perhaps even most, take them to be structured entities with individuals, properties, and relations as constituents. For example, the (...) proposition that Glenn loves Tracy has Glenn, the loving relation, and Tracy as constituents. What is it, then, that binds these constituents together and imposes structure on them? And if the proposition that Glenn loves Tracy is distinct from the proposition that Tracy loves Glenn yet both have the same constituents, what is about the way these constituents are structured or bound together that makes them two different propositions? In The Nature and Structure of Content, Jeffrey C. King formulates a detailed account of the metaphysical nature of propositions, and provides fresh answers to the above questions. In addition to explaining what it is that binds together the constituents of structured propositions and imposes structure on them, King deals with some of the standard objections to accounts of propositions: he shows that there is no mystery about what propositions are; that given certain minimal assumptions, it follows that they exist; and that on his approach, we can see how and why propositions manage to have truth conditions and represent the world as being a certain way. The Nature and Structure of Content also contains a detailed account of the nature of tense and modality, and provides a solution to the paradox of analysis. Scholars and students working in the philosophy of mind and language will find this book rewarding reading. (shrink)

Over the past 25 years, no religious institution in America has done more to explore the link between the environment and spirituality than the Cathedral of St. John the Divine. Now, for the first time, a selection of the finest of the Cathedral's ecological sermons appears in a single volume.

Epistemic Consequentialism Consequentialism is the view that, in some sense, rightness is to be understood in terms conducive to goodness. Much of the philosophical discussion concerning consequentialism has focused on moral rightness or obligation or normativity. But there is plausibly also epistemic rightness, epistemic obligation, and epistemic normativity. Epistemic rightness is often denoted with talk … Continue reading Consequentialism Epistemic →.

We report two issues concerning diverging sets of Bayesian (conditional) probabilities-divergence of "posteriors"-that can result with increasing evidence. Consider a set P of probabilities typically, but not always, based on a set of Bayesian "priors." Fix E, an event of interest, and X, a random variable to be observed. With respect to P, when the set of conditional probabilities for E, given X, strictly contains the set of unconditional probabilities for E, for each possible outcome X = x, call this (...) phenomenon dilation of the set of probabilities (Seidenfeld and Wasserman 1993). Thus, dilation contrasts with the asymptotic merging of posterior probabilities reported by Savage (1954) and by Blackwell and Dubins (1962). (1) In a wide variety of models for Robust Bayesian inference the extent to which X dilates E is related to a model specific index of how far key elements of P are from a distribution that makes X and E independent. (2) At a fixed confidence level, (1-α), Classical interval estimates A n for, e.g., a Normal mean θ have length O(n -1/2 ) (for sample size n). Of course, the confidence level correctly reports the (prior) probability that θ ∈ A n ,P(A n )=1-α , independent of the prior for θ . However, as shown by Pericchi and Walley (1991), if an ε -contamination class is used for the prior on the parameter θ , there is asymptotic (posterior) dilation for the A n , given the data. If, however, the intervals A ′ n are chosen with length $O(\sqrt{\log (\text{n})/\text{n})}$ , then there is no asymptotic dilation. We discuss the asymptotic rates of dilation for ClassClassical and Bayesian interval estimates and relate these to Bayesian hypothesis testing. (shrink)

Epicureanism after the generation of its founders has been characterised as dogmatic, uncreative and static. But this volume brings together work from leading classicists and philosophers that demonstrates the persistent interplay in the school between historical and contemporary influences from outside the school and a commitment to the founders' authority. The interplay begins with Epicurus himself, who made arresting claims of intellectual independence, yet also admitted to taking over important ideas from predecessors, and displayed more receptivity than is usually thought (...) to those of his contemporaries. The same principles of autonomy and openness figure importantly in the three major areas of focus in these essays: theology, politics and the emotions. (shrink)

This chapter presents the main formalism of the book, which is used in subsequent chapters to describe a variety of concepts in Husserlian phenomenology, and thereby unify them. A dynamical systems approach to Husserl is introduced, and several dynamical laws of Husserlian phenomenology are described. The first is an expectation rule according to which expectations are determined by what a person knows, sees, and does. The second is a learning rule according to which background knowledge is updated in a specific (...) way when experiences fulfill or frustrate prior expectations. In addition to these rules, a “supervenience function” is described, which associates how a thing is seen with a “trail set,” the set ways that thing is expected to look, relative to all possible ways of moving around it. This function further illustrates the explanatory dimension of phenomenology described in Chap. 2, whereby how we immanently experience things is determined by how we expect them to look relative to counterfactual movement patterns. (shrink)

Why does Hegel change “Dreaming Soul” to “Feeling Soul” in the 1830 edition of the Philosophy of Subjective Spirit? By tracing the content of the Dreaming Soul section, through Hegel’s 1794 manuscript on psychology, to sources such as C.P. Moritz’s Magazin zur Erfahrungsseelenkunde, the paper shows how the section embraces a late Enlightenment mission: combating supposedly supernatural expressions of spiritual enthrallment by explaining them as pathological conditions of the soul. Responding to perceived attacks on the 1827 edition of the Encyclopedia (...) by Schleiermacher, Hegel alters the section and its heading, thereby including the pastor’s religion of feeling in the pathology of Schwärmerei. (shrink)

Jeffrey E. Brower presents and explains the hylomorphic conception of the material world developed by Thomas Aquinas, according to which material objects are composed of both matter and form. In addition to presenting and explaining Aquinas's views, Brower seeks wherever possible to bring them into dialogue with the best recent literature on related topics. Along the way, he highlights the contribution that Aquinas's views make to a host of contemporary metaphysical debates, including the nature of change, composition, material constitution, (...) the ontology of stuff vs. things, the proper analysis of ordinary objects, the truthmakers for essential vs. accidental predication, and the metaphysics of property possession. (shrink)

Now in paperback, this important book explores the central role of historical thought in the full range of Heidegger’s thought, both the early writings leading up to Being and Time, and after the “reversal” or Kehre that inaugurated his later work. Barash examines Heidegger’s views on history in a richly developed context of debates that transpired in the early 20th-century German philosophy of history. He addresses a key unifying theme—the problem of historical meaning and the search for coherent criteria of (...) truth in an era of historical relativism—as he traces the engagement with historicity throughout all major epochs and works. Barash revises this edition to explore new material, including Heidegger’s lecture course texts from 1910 to 1923, and adds an expanded, updated bibliography. (shrink)

Complex life cycles are common in the eukaryotic world, and they complicate the question of how to define individuality. Using a bottom-up, gene-centric approach, I consider the concept of fitness in the context of complex life cycles. I analyze the fitness effects of an allele on different biological units within a complex life history and how these effects drive evolutionary change within populations. Based on these effects, I attempt to construct a concept of fitness that accurately predicts evolutionary change in (...) the context of complex life cycles. (shrink)

Alexis de Tocqueville once wrote that "the people reign over the American political world like God over the universe," unwittingly casting democracy as the political instantiation of the death of God. According to Jeffrey W. Robbins, Tocqueville's assessment remains an apt observation of modern democratic power, which does not rest with a sovereign authority but operates as a diffuse social force. By linking radical democratic theory to a contemporary fascination with political theology, Robbins envisions the modern experience of democracy (...) as a social, cultural, and political force transforming the nature of sovereign power and political authority. Robbins joins his work with Michael Hardt and Antonio Negri's radical conception of "network power," as well as Sheldon Wolin's notion of "fugitive democracy," to fashion a political theology that captures modern democracy's social and cultural torment. This approach has profound implications not only for the nature of contemporary religious belief and practice but also for the reconceptualization of the proper relationship between religion and politics. Challenging the modern, liberal, and secular assumption of a neutral public space, Robbins conceives of a postsecular politics for contemporary society that inextricably links religion to the political. While effectively recasting the tradition of radical theology as a political theology, this book also develops a comprehensive critique of the political theology bequeathed by Carl Schmitt. It marks an original and visionary achievement by the scholar the _Journal of the American Academy of Religion_ hailed "one of the best commentators on religion and postmodernism.". (shrink)

Alexis de Tocqueville once wrote that "the people reign over the American political world like God over the universe," unwittingly casting democracy as the political instantiation of the death of God. According to Jeffrey W. Robbins, Tocqueville's assessment remains an apt observation of modern democratic power, which does not rest with a sovereign authority but operates as a diffuse social force. By linking radical democratic theory to a contemporary fascination with political theology, Robbins envisions the modern experience of democracy (...) as a social, cultural, and political force transforming the nature of sovereign power and political authority. Robbins joins his work with Michael Hardt and Antonio Negri's radical conception of "network power," as well as Sheldon Wolin's notion of "fugitive democracy," to fashion a political theology that captures modern democracy's social and cultural torment. This approach has profound implications not only for the nature of contemporary religious belief and practice but also for the reconceptualization of the proper relationship between religion and politics. Challenging the modern, liberal, and secular assumption of a neutral public space, Robbins conceives of a postsecular politics for contemporary society that inextricably links religion to the political. While effectively recasting the tradition of radical theology as a political theology, this book also develops a comprehensive critique of the political theology bequeathed by Carl Schmitt. It marks an original and visionary achievement by the scholar the _Journal of the American Academy of Religion_ hailed "one of the best commentators on religion and postmodernism.". (shrink)

Reliabilism—the view that a belief is justified iff it is produced by a reliable process—is often characterized as a form of consequentialism. Recently, critics of reliabilism have suggested that since it is a form of consequentialism, reliabilism condones a variety of problematic trade-offs involving cases where someone forms an epistemically deficient belief now that will lead her to more epistemic value later. In the present paper, we argue that the relevant argument against reliabilism fails because it equivocates. While there is (...) a sense in which reliabilism is a kind of consequentialism, it is not of a kind on which we should expect problematic trade-offs. (shrink)

"Neofunctionalism and After" brings together for the first time in one volume all of Alexander's writings on neofunctionalism, the present volume also contains ...

Despite an explosion of studies on memory in historical and cultural studies, there is relatively little in moral philosophy on this subject. In this book, Jeffrey Blustein provides a systematic and philosophically rigorous account of a morality of memory. Drawing on a broad range of philosophical and humanistic literatures, he offers a novel examination of memory and our relations to people and events from our past, the ways in which memory is preserved and transmitted, and the moral responsibilities associated (...) with it. Blustein treats topics of responsibility for one's own past; historical injustice and the role of memory in doing justice to the past; the relationship of collective memory to history and identity; collective and individual obligations to remember those who have died, including those who are dear to us; and the moral significance of bearing witness. (shrink)

According to the Conscience Principle, it is never morally permissible to act contrary to conscience. The plausibility of this being a genuine moral principle depends on what conscience is, whether it can be mistaken, and what its role is in general moral psychology. Thomas Aquinas endorses and defends a unique version of the Conscience Principle. What’s especially interesting about his unorthodox (for his time) view on conscience is that it seems to split the difference between the views we might expect (...) to support the Conscience Principle: On the one hand, thoroughgoing subjectivism on which all moral facts and obligations are a function of agents’ mental states, and on the other hand, objectivist intuitionism on which there is an external moral law but a faculty of conscience gives us inerrant access to it. Aquinas claims that there are objective moral truths, that conscience fallibly represents those truths, and yet, conscience always generates moral obligations, whether it is correct or incorrect. Aquinas’s view will strike many initially as puzzling, perhaps even incoherent. To make sense of it, we must understand that for Aquinas the Conscience Principle is not just one moral principle among many; instead, it falls out of a novel and philosophically powerful metaethical view of moral obligations (or what we might call requiring moral reasons). (shrink)

Semantics is the discipline that studies linguistic meaning generally, and the qualification ‘formal’ indicates something about the sorts of techniques used in investigating linguistic meaning. More specifically, formal semantics is the discipline that employs techniques from symbolic logic, mathematics, and mathematical logic to produce precisely characterized theories of meaning for natural languages or artificial languages. Formal semantics as we know it first arose in the twentieth century. It was made possible by certain developments in logic during that period. This article (...) chronicles those developments and how they led to the development of formal semantics. (shrink)