The aim of the causal dynamical triangulations approach is to define nonperturbatively a quantum theory of gravity as the continuum limit of a lattice-regularized model of dynamical geometry. My aim in this paper is to give a concise yet comprehensive, impartial yet personal presentation of the causal dynamical triangulations approach.

In lieu of an abstract, here is a brief excerpt of the content:"An Encyclopedic Pico della Mirandola"?Rethinking Aquinas on Christ's Infused KnowledgeJoshua H. LimIntroductionIn what has come to be known as Thomas's account of the triple knowledge of Christ, the infused knowledge holds a tenuous place. It stands awkwardly between two kinds of knowledge, beatific and acquired, which are explicitly linked to the fulfillment of Christ's redemptive mission.1 Christ's earthly [End Page 147] beatific knowledge, controverted though it may be, nevertheless (...) has for Thomas a definite soteriological end.2 As the author of salvation, Christ, from the moment of conception, had to possess in actu the very knowledge to which he was to lead the rest of humanity, namely, the supernatural and beatific knowledge of the divine essence and of all things in it. Christ's acquired knowledge is also ordered to our salvation; it is necessary on account of exigencies arising from the integrity of human nature. In the assumption of a complete human nature, it was necessary for Christ to possess acquired knowledge, for without an agent intellect having its proper operation (i.e., abstracting intelligible species from phantasms arising from the senses), Christ's humanity would have been incomplete, imperfect.3 Thus, according to the patristic dictum that what is not assumed is not redeemed, Christ's redemption of human nature would have been imperfect. In contrast to these two types of knowledge, it is not clear whether and how the infused knowledge contributes to human salvation. Unlike the beatific knowledge, the infused knowledge does not belong intrinsically to the state of the comprehensor, for beatitude does not consist in a knowledge of created things in themselves, but in God;4 and unlike the acquired knowledge, the infused knowledge is not necessary for the assumption of an integral human nature.5 Add to this Thomas's passing description of Christ's infused knowledge as "proportioned to the angelic nature," encompassing all intelligible species of things knowable through nature and through the light of grace. In this vein, the infused knowledge threatens to transform Christ into a caricature of a man—turning Christ into what É. H. Wéber has disparagingly called an "encyclopedic Pico della Mirandola."6 [End Page 148]Herein lies the problem. Given the acquired and beatific knowledge, what use is there for the infused knowledge? The knowledge of all that can be known by nature is already attributed to Christ through his acquired knowledge; further, the knowledge of all the mysteries of grace is accessible to Christ through his beatific knowledge of God and all things in Verbo. While humans, as viatores, gain knowledge through the senses, and, as comprehensores, behold God through an elevation of the soul through glory, it is unclear whether a third kind of knowledge, the infused knowledge, is necessary and, if so, to what end. If, according to the Scholastic dictum, God and nature do nothing in vain, what sense can be made of Christ's infused knowledge?At least since the seventeenth century, Thomists have typically sought to resolve this tension by appealing to the unique role of infused knowledge in Christ's earthly transmission of knowledge. Thus, the infused knowledge fills a gap between the beatific and acquired modes of knowing, providing Christ's soul with a mode of knowledge which enables him to communicate supernatural truths, the mysteria gratiae,7 otherwise known in the blessed vision of the Word, through created and, therefore, humanly communicable intelligible species. Christ's acquired knowledge, restricted to what is naturally knowable, is insufficient to lead "many brothers to glory,'" while the beatific knowledge, though saving, nevertheless remains unconceptualizable and therefore incommunicable in mode.8 According to this view, therefore, the necessity of the infused knowledge arises as a bridge of continuity between the beatific and acquired knowledge, enabling Christ to communicate the truth of the kingdom of God in a way that is proportioned to the human nature in via.Such an account has two clear points in its favor. First, by highlighting the gulf between the beatific and acquired modes of knowledge, it makes room for a distinct, third mode of knowledge. Second, and related to the first point, by accounting for the... (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Reviewed by:Human Perfection in Byzantine Theology: Attaining the Fullness of Christ by Alexis TorranceJoshua H. LimHuman Perfection in Byzantine Theology: Attaining the Fullness of Christ by Alexis Torrance, Changing Paradigms in Historical and Systematic Theology (Oxford: Oxford University Press, 2020), ix + 239 pp.As a part of the series Changing Paradigms in Historical and Systematic Theology, Alexis Torrance's Human Perfection in Byzantine Theology examines the role of Christ's human (...) perfection within key figures in the Byzantine tradition against the backdrop of trends in contemporary Orthodox theology. Torrance seeks to uncover a common "Christocentrism" within the Byzantine tradition that challenges the contemporary tendency among contemporary Orthodox theologians to "unmoor" theological anthropology from the doctrine of the humanity of Christ. Indeed, according to Torrance, some of these approaches go so far as to risk the danger of "theological shipwreck" (1). As general representatives of the tendency Torrance has in mind, we can name such figures as John Zizioulas and Vladimir Lossky, whose personalist anthropologies depart from the tradition by "bypassing or deferring Christology" (10) In the case of Zizioulas, for instance, Torrance sees the disintegration of theological anthropology into "a sentimental application or projection of worldly and hazy concepts of personality and 'community' to both the Godhead and the people of God" (10). If, for Torrance, the above thinkers appear to represent a wayward tendency (even if he takes issue with certain of their "starting points," Torrance nevertheless seems to agree with most of their conclusions), it is Fr. John Behr whose theology Torrance likely has in mind as risking "theological shipwreck."As we shall see, the overall intelligibility of Torrance's work appears only in the final chapter, against the backdrop of Behr's "unmistakably Christocentric" (206) anthropology. While Torrance joins Behr in bemoaning the non-Christocentric character of much of modern theological anthropology, nevertheless, he sees Behr's project as positing a Christocentrism that flies in the face of the Byzantine tradition. In light of Behr's Christocentrism (and in a way that is reminiscent of Gaudium et Spes §22), Torrance wishes to [End Page 373] show that, for any genuinely Byzantine doctrine, Christ, in his particular and enduring humanity, must be the starting point of the human ideal: "Human perfection and human destiny are only revealed, known, and bequeathed in the person of Jesus Christ, the God-man" (11). To this end, Torrance proposes a "fresh Christocentric paradigm" (3).Torrance's study provides insight into important texts which both implicitly and explicitly reflect the priorities of the Fathers. Taking the historical and systematic approach of Georges Florovsky's "neo-patristic synthesis" as his cue, Torrance highlights the centrality of Christ's humanity in four key figures. He examines the immovability of the human will in the eschaton in Maximus the Confessor (ch. 2), the particular ("depictable") and enduring humanity of Christ in Theodore the Studite (ch. 3), the attainability of human perfection in Symeon the New Theologian (ch. 4), and the possibility of deification through uncreated grace in Gregory Palamas (ch. 5). In each of these thinkers Torrance discovers a "thoroughly Christocentric gaze" (37), which begins from the concrete and particular human nature of Christ, and thereby provides a contrast with the abstract tendency of certain contemporary Orthodox thinkers. However, as we shall see, on account of the ambiguity surrounding the term "Christocentric," it is not always clear whether or how Christ's humanity and human perfection figure into the themes discussed. More problematically, it is not always clear whether Christ's perfect humanity provides an insight into human perfection or human nature, as such.For the purposes of this review, we will focus on Torrance's chapter on Theodore the Studite. Torrance's treatment of Theodore is distinct from his treatment of other Byzantine figures inasmuch as Theodore's teaching on Christ's depictability is historically situated in an explicitly Christological debate. While the studies on Maximus, Symeon, and Palamas certainly have themes that, in one way or another, advert to Christ's humanity, nevertheless none of particular issues treated can be said to have Christ's humanity as their essential starting point. This is to say that Christ's human perfection... (shrink)

The protection of rare species abounds with scientific and ethical considerations. An ethical dilemma can emerge when the life of one species is valued higher than that of another, and so we discuss the basis of ranking, protection, and valuation of plants and animals. A duty to protect rare species exists in this age of great losses to plant and animal life, but the scientific and public communities are not always in agreement regarding what species deserve protection. Using a case (...) study, we illustrate how the decision to kill beavers to protect a rare plant and rare animals found in a tidewater creek demanded an ecological ethic approach. We present the concept of a" conservation mediator" and how its use may help find a common ground between stakeholders and decision-makers in similar situations. (shrink)

In order to receive controlled pain medications for chronic non-oncologic pain, patients often must sign a “narcotic contract” or “opioid treatment agreement” in which they promise not to give pills to others, use illegal drugs, or seek controlled medications from health care providers. In addition, they must agree to use the medication as prescribed and to come to the clinic for drug testing and pill counts. Patients acknowledge that if they violate the opioid treatment agreement, they may no longer receive (...) controlled medications. OTAs have been widely implemented since they were recommended by multiple national bodies to decrease misuse and diversion of narcotic medications. But critics argue that OTAs are ethically suspect, if not unethical, and should be used with extreme care if at all. We agree that OTAs pose real dangers and must be implemented carefully. But we also believe that the most serious criticisms stem from a mistaken understanding of OTAs’ purpose and ethical basis. (shrink)

Nonpharmaceutical interventions to minimize the transmission of the severe acute respiratory syndrome coronavirus 2 are necessary because we currently lack a vaccine or specific treatments. Healthcare facilities have adopted visitor restrictions and masking requirements. These interventions should be evaluated as public health measures, focusing on their efficacy, the availability of less-restrictive alternatives, and the minimization of the burdens and their balance with the benefits. These interventions, as well as exceptions, can be justified by the same analysis. For example, visitor restrictions (...) are sound, as are exceptions for women in labor, adults with disabilities, minor children, and individuals who are dying. In implementing these policies, specific rules are preferable to general principles because they are more efficient and reduce possible bias. There should, however, be appeal mechanisms and retrospective review processes. Evaluating requests for medical exemptions to masking requirements is particularly difficult, given the prevalence of nonmedical objections, false claims of medical exemptions, and a lack of objective medical criteria. Requiring written statements by licensed healthcare providers that undergo subsequent substantive review may therefore be justified. (shrink)

In the past two decades, reinforcement learning has become a popular framework for understanding brain function. A key component of RL models, prediction error, has been associated with neural signals throughout the brain, including subcortical nuclei, primary sensory cortices, and prefrontal cortex. Depending on the location in which activity is observed, the functional interpretation of prediction error may change: Prediction errors may reflect a discrepancy in the anticipated and actual value of reward, a signal indicating the salience or novelty of (...) a stimulus, and many other interpretations. Anterior cingulate cortex has long been recognized as a region involved in processing behavioral error, and recent computational models of the region have expanded this interpretation to include a more general role for the region in predicting likely events, broadly construed, and signaling deviations between expected and observed events. Ongoing modeling work investigating the interaction between ACC and additional regions involved in cognitive control suggests an even broader role for cingulate in computing a hierarchically structured surprise signal critical for learning models of the environment. The result is a predictive coding model of the frontal lobes, suggesting that predictive coding may be a unifying computational principle across the neocortex. (shrink)

A core value of Judaism is leading an ethical life. The Talmud, an authoritative source on Jewish law and tradition, has a number of discussions that deal with honesty in business and decision-making. One motive that can cause individuals to be unscrupulous is the presence of a conflict of interest. This paper will define, discuss, and review five Talmudic concepts relevant to conflict of interest. They are (1) Nogea B’Davar (being an interested party), (2) V’hiyitem N’keyim (behaving to ensure that (...) one is above suspicion) (3) Lifnei Iver (placing a stumbling block before the blind), (4) Shokhad (accepting a bribe), and (5) Geneivat Da’at (deception and undeserved goodwill). Case examples will be used to apply these Talmudic principles to contemporary business practice. This will include discussion of these Talmudic concepts as it applies to specific contemporary business examples relevant to the boardroom, accounting firms, investment banking, politics, and government. It may be impossible to eliminate all conflicts of interest. However, knowledge and awareness of these Talmudic principles can help individuals in business settings better address the ethical issues that they confront. (shrink)

Dietary restriction (DR) is the most consistent environmental manipulation to extend lifespan. Originally thought to be caused by a reduction in caloric intake, recent evidence suggests that macronutrient intake underpins the effect of DR. The prevailing evolutionary explanations for the DR response are conceptualized under the caloric restriction paradigm, necessitating reconsideration of how or whether these evolutionary explanations fit this macronutrient perspective. In the authors’ opinion, none of the current evolutionary explanations of DR adequately explain the intricacies of observed results; (...) instead a context‐dependent combination of these theories is suggested which is likely to reflect reality. In reviewing the field, it is proposed that the ability to track the destination of different macronutrients within the body will be key to establishing the relative roles of the competing theories. Understanding the evolution of the DR response and its ecological relevance is critical to understanding variation in DR responses and their relevance outside laboratory environments. (shrink)

Background: In prevalence studies of sexually transmitted infections (STIs), investigators often provide syndromic management for symptomatic participants, but may not provide specific treatment for asymptomatic individuals with positive laboratory test results due to the delays between sample collection and availability of results as well as logistical constraints in recontacting study participants. Methods: To characterize the extent of this issue, 80 prevalence studies from the World Health Organization’s Report on global sexually transmitted infection surveillance, 2018, were reviewed. Studies were classified as (...) to whether clinically relevant positive results were returned or if this was not specified. Results: More than half (56%) of the cited studies did not specify if participants were notified of clinically relevant positive STI test results. The percentages were similar for low- and middle-income country populations (57%) and high-income country populations (53%). Conclusions: The absence of documentation of the provision of test results raises the possibility that in some instances, results may not have been communicated, with potential negative effects for participants, their sexual partners, and newborns. From an ethical perspective, clinically relevant results should be returned to study participants and treating clinicians in a timely fashion to ensure appropriate management of identified infections. Study authors should document if they returned test results to study participants and report on numbers lost to follow-up. (shrink)

Meditation is an umbrella term for a number of mental training practices designed to improve the monitoring and regulation of attention and emotion. Some forms of meditation are now being used for clinical intervention. To accompany the increased clinical interest in meditation, research investigating the neural basis of these practices is needed. A central hypothesis of contemplative neuroscience is that meditative states, which are unique on a phenomenological level, differ on a neurophysiological level. To identify the electrophysiological correlates of meditation (...) practice, the electrical brain activity of highly skilled meditators engaging in one of six meditation styles was recorded. A mind-wandering task served as a control. Lempel–Ziv complexity showed differences in nonlinear brain dynamics during meditation compared with mind wandering, suggesting that meditation, regardless of practice, affects neural complexity. In contrast, there were no differences in power spectra at six different frequency bands, likely due to the fact that participants engaged in different meditation practices. Finally, exploratory analyses suggest neurological differences among meditation practices. These findings highlight the importance of studying the electroencephalography correlates of different meditative practices. (shrink)

Calpain (Cp) is a calcium (Ca2+)‐dependent cysteine protease. Activation of the major isoforms of Cp, CpI and CpII, are required for a number of important cellular processes including adherence, shape change and migration. The current concept that cytoplasmic Cp locates and associates with its regulatory subunit (Rs) and substrates as well as translocates throughout the cell via random diffusion is not compatible with the spatial and temporal constraints of cellular metabolism. The novel finding that Cp and Rs function relies upon (...) tenacious hydrophobic interactions with organelle membranes offers a unifying explanation for the paradoxical and puzzling features of Cp activation and regulation such as how nM concentrations of intracellular Ca2+ can activate Cp molecules requiring μM to mM concentrations of Ca2+ for in vitro activation, and how this protease can spatially and temporally locate specific substrates and translocate throughout the cell. We hypothesize that Cp and its regulatory moieties associate with organelles to facilitate the activation of this protease resulting in the cleavage of substrates and aid in its translocation throughout the cell. BioEssays 28: 850–859, 2006. © 2006 Wiley Periodicals, Inc. (shrink)

ICAP is a theory of active learning that differentiates students’ engagement based on their behaviors. ICAP postulates that Interactive engagement, demonstrated by co‐generative collaborative behaviors, is superior for learning to Constructive engagement, indicated by generative behaviors. Both kinds of engagement exceed the benefits of Active or Passive engagement, marked by manipulative and attentive behaviors, respectively. This paper discusses a 5‐year project that attempted to translate ICAP into a theory of instruction using five successive measures: (a) teachers’ understanding of ICAP after (...) completing an online module, (b) their success at designing lesson plans using different ICAP modes, (c) fidelity of teachers’ classroom implementation, (d) modes of students’ enacted behaviors, and (e) students’ learning outcomes. Although teachers had minimal success in designing Constructive and Interactive activities, students nevertheless learned significantly more in the context of Constructive than Active activities. We discuss reasons for teachers’ overall difficulty in designing and eliciting Interactive engagement. (shrink)

The medial prefrontal cortex (mPFC) has been the subject of intense interest as a locus of cognitive control. Several computational models have been proposed to account for a range of effects, including error detection, conflict monitoring, error likelihood prediction, and numerous other effects observed with single-unit neurophysiology, fMRI, and lesion studies. Here, we review the state of computational models of cognitive control and offer a new theoretical synthesis of the mPFC as signaling response–outcome predictions. This new synthesis has two interacting (...) components. The first component learns to predict the various possible outcomes of a planned action, and the second component detects discrepancies between the actual and intended responses; the detected discrepancies in turn update the outcome predictions. This single construct is consistent with a wide array of performance monitoring effects in mPFC and suggests a unifying account of the cognitive role of medial PFC in performance monitoring. (shrink)

Young children, like adults, understand that human agents can flexibly choose different actions in different contexts, and they evaluate these agents based on such choices. However, little is known about children's tendencies to attribute the capacity to choose to robots, despite increased contact with robotic agents. In this paper, we compare 5‐ to 7‐year‐old children's and adults’ attributions of free choice to a robot and to a human child by using a series of tasks measuring agency attribution, action prediction, and (...) choice attribution. In morally neutral scenarios, children ascribed similar levels of free choice to the robot and the human, while adults were more likely to ascribe free choice to the human. For morally relevant scenarios, however, both age groups considered the robot's actions to be more constrained than the human's actions. These findings demonstrate that children and adults hold a nuanced understanding of free choice that is sensitive to both the agent type and constraints within a given scenario. (shrink)

The cytoskeleton has a central role in eukaryotic biology, enabling cells to organize internally, polarize, and translocate. Studying cytoskeletal machinery across the tree of life can identify common elements, illuminate fundamental mechanisms, and provide insight into processes specific to less‐characterized organisms. Red algae represent an ancient lineage that is diverse, ecologically significant, and biomedically relevant. Recent genomic analysis shows that red algae have a surprising paucity of cytoskeletal elements, particularly molecular motors. Here, we review the genomic and cell biological evidence (...) and propose testable models of how red algal cells might perform processes including cell motility, cytokinesis, intracellular transport, and secretion, given their reduced cytoskeletons. In addition to enhancing understanding of red algae and lineages that evolved from red algal endosymbioses (e.g., apicomplexan parasites), these ideas may also provide insight into cytoskeletal processes in animal cells. (shrink)

BackgroundAn increasing number of studies utilize intracranial electrophysiology in human subjects to advance basic neuroscience knowledge. However, the use of neurosurgical patients as human research subjects raises important ethical considerations, particularly regarding informed consent and undue influence, as well as subjects’ motivations for participation. Yet a thorough empirical examination of these issues in a participant population has been lacking. The present study therefore aimed to empirically investigate ethical concerns regarding informed consent and voluntariness in Parkinson’s disease patients undergoing deep brain (...) stimulator (DBS) placement who participated in an intraoperative neuroscience study.MethodsTwo semi-structured 30-minute interviews were conducted preoperatively and postoperatively via telephone. Interviews assessed participants’ motivations for participation in the parent intraoperative study, recall of information presented during the informed consent process, and participants’ postoperative reflections on the research study.ResultsTwenty-two participants (mean age = 60.9) completed preoperative interviews at a mean of 7.8 days following informed consent and a mean of 5.2 days prior to DBS surgery. Twenty participants completed postoperative interviews at a mean of 5 weeks following surgery. All participants cited altruism or advancing medical science as “very important” or “important” in their decision to participate in the study. Only 22.7% (n = 5) correctly recalled one of the two risks of the study. Correct recall of other aspects of the informed consent was poor (36.4% for study purpose; 50.0% for study protocol; 36.4% for study benefits). All correctly understood that the study would not confer a direct therapeutic benefit to them.ConclusionEven though research coordinators were properly trained and the informed consent was administered according to protocol, participants demonstrated poor retention of study information. While intraoperative studies that aim to advance neuroscience knowledge represent a unique opportunity to gain fundamental scientific knowledge, improved standards for the informed consent process can help facilitate their ethical implementation. (shrink)

We estimate that 208,000 deep brain stimulation (DBS) devices have been implanted to address neurological and neuropsychiatric disorders worldwide. DBS Think Tank presenters pooled data and determined that DBS expanded in its scope and has been applied to multiple brain disorders in an effort to modulate neural circuitry. The DBS Think Tank was founded in 2012 providing a space where clinicians, engineers, researchers from industry and academia discuss current and emerging DBS technologies and logistical and ethical issues facing the field. (...) The emphasis is on cutting edge research and collaboration aimed to advance the DBS field. The Eighth Annual DBS Think Tank was held virtually on September 1 and 2, 2020 (Zoom Video Communications) due to restrictions related to the COVID-19 pandemic. The meeting focused on advances in: (1) optogenetics as a tool for comprehending neurobiology of diseases and on optogenetically-inspired DBS, (2) cutting edge of emerging DBS technologies, (3) ethical issues affecting DBS research and access to care, (4) neuromodulatory approaches for depression, (5) advancing novel hardware, software and imaging methodologies, (6) use of neurophysiological signals in adaptive neurostimulation, and (7) use of more advanced technologies to improve DBS clinical outcomes. There were 178 attendees who participated in a DBS Think Tank survey, which revealed the expansion of DBS into several indications such as obesity, post-traumatic stress disorder, addiction and Alzheimer’s disease. This proceedings summarizes the advances discussed at the Eighth Annual DBS Think Tank. (shrink)

Núñez and colleagues (2019) question whether cognitive science still exists “as a coherent academic field with a well‐defined and cohesive interdisciplinary research program.” This worry may be premature on two grounds. First, we are not convinced that the Lakatosian criterion of coalescence around a core framework is the best standard for judging whether a field is well‐defined and productive. Second, although we acknowledge that cognitive science is not as visible as we would like, we doubt that this low profile accurately (...) reflects the state of actual research and teaching programs based on the cognitive science approach. (shrink)

Núñez and colleagues (2019) question whether cognitive science still exists “as a coherent academic field with a well‐defined and cohesive interdisciplinary research program.” This worry may be premature on two grounds. First, we are not convinced that the Lakatosian criterion of coalescence around a core framework is the best standard for judging whether a field is well‐defined and productive. Second, although we acknowledge that cognitive science is not as visible as we would like, we doubt that this low profile accurately (...) reflects the state of actual research and teaching programs based on the cognitive science approach. (shrink)

Benchmarks against which healthcare ethics consultation (HCEC) services can assess their performance are needed. As first-generation benchmarks continue to be developed, it is the obligation of the field to continually evaluate how these measures reflect the performance of any single HCEC service. This will be possible only with widespread reporting of standardized data points. In their article in this issue of The Journal of Clinical Ethics, Glover and colleagues provide a valuable preliminary approach for assessing appropriate consult volumes for a (...) HCEC service. The limitations of their study read as a call to action for the field of clinical ethics to expand and standardize data reporting so that more robust metrics can be developed. In response to this call by Glover and colleagues, the Cleveland Clinic HCEC service provides consult data from 2015 through 2019 for one of its medical centers, and offers an additional volumebased metric, consult-to-ICU-to-bed ratio (CiBR), that may add nuance to any normative assessment of HCEC service consult volume. Given that volume-based metrics are the native language of the clinical environment, efforts to improve such metrics in the field through transparency and standardization are warranted. However, the expositive power of volume-based metrics is limited; additional domains related to quality and outcomes are needed. (shrink)

ABSTRACTNew methods of calculating indices from the dot-probe task measure temporal dynamics in attention bias or fluctuations in attention bias towards and away from emotional stimuli over time. H...

Those most intimate with the works of H. Richard Niebuhr, who return to them time after time for theological and ethical sustenance, know that they exemplify a more interesting thinker than his brother, Reinhold. Of course, Reinhold was and remains the more public figure, read seriously in his time by politicians and theologians, celebrated by our current president, and enjoying renewed scholarly interest resulting in new editions of out-of-print works and a number of critical studies. Meanwhile, H. Richard continues to (...) exert decisive influence on American Protestant thought. Such diverse thinkers as Paul Ramsey, James Gustafson, Stanley Hauerwas, William Schweiker, Kathryn Tanner, Gordon Kaufman, Emilie Townes .. (shrink)

In this essay, I reconstruct H. Richard Niebuhr's interpretation of George Herbert Mead's account of the social constitution of the self. Specifically, I correct Niebuhr's interpretation, because it mischaracterizes Mead's understanding of social constitution as more dialogical than ecological. I also argue that Niebuhr's interpretation needs completing because it fails to engage one of Mead's more significant notions, the I/me distinction within the self. By reconstructing Niebuhr's account of faith and responsibility as theologically self-constitutive through Mead's I/me distinction, I demonstrate (...) Niebuhr's deep yet unacknowledged agreement with Mead: the self is constituted by its participation in multiple communities, but responds to them creatively by enduring the moral perplexity of competing communal claims. I conclude by initiating a constructive account of conscience that follows from this agreement. Conscience is more ecological than dialogical because it regards our creative participation in multiple ecologies of social roles oriented by patterns of responsive relations. (shrink)

This essay responds to the contemporary anxiety in theology over the relationship between Christian and non-Christian discourse. My argument proceeds as follows. First, I construe the debate between liberal and postliberal theology as turning on the wrestle between the idiosyncrasy and intelligibility of Christian discourse. While the liberal tradition insists that Christian discourse can be rendered intelligible to non-Christian forms of thought and life, and so can contribute to the flourishing of a shared social life, postliberal critics worry that this (...) insistence leads to the capitulation of that discourse to foreign, hostile criteria, and so to the loss of the idiosyncratic Christian identity. Second, I .. (shrink)

A mass problem is a set of Turing oracles. If P and Q are mass problems, we say that P is weakly reducible to Q if for all Y ∈ Q there exists X ∈ P such that X is Turing reducible to Y. A weak degree is an equivalence class of mass problems under mutual weak reducibility. Let [Formula: see text] be the lattice of weak degrees of mass problems associated with nonempty [Formula: see text] subsets of the Cantor (...) space. The lattice [Formula: see text] has been studied in previous publications. The purpose of this paper is to show that [Formula: see text] partakes of hyperarithmeticity. We exhibit a family of specific, natural degrees in [Formula: see text] which are indexed by the ordinal numbers less than [Formula: see text] and which correspond to the hyperarithmetical hierarchy. Namely, for each [Formula: see text], let hα be the weak degree of 0, the αth Turing jump of 0. If p is the weak degree of any mass problem P, let p* be the weak degree of the mass problem P* = {Y | ∃X ⊆ BLR )} where BLR is the set of functions which are boundedly limit recursive in X. Let 1 be the top degree in [Formula: see text]. We prove that all of the weak degrees [Formula: see text], [Formula: see text], are distinct and belong to [Formula: see text]. In addition, we prove that certain index sets associated with [Formula: see text] are [Formula: see text] complete. (shrink)

The infrahuman speaks to a vast network of thought surrounding the politics of race, nation, and embodiment that had already begun to rise within U.S. public culture by the late nineteenth century.I therefore reappropriate and rehabilitate the infrastructure in a way that pays homage both to its historical moment and to its lasting impact on hierarchies of evolution, hybrid speciation, dehumanization, and conditions of inequality.This project is, to borrow a word sometimes used derisively, “ambitious.” The excavation and refurbishment of concepts (...) is difficult under the best of circumstances, harder still when they involve overtones of existential and moral questions. (shrink)

Inspired by Charles Taylor’s locating of Herder and Rousseau’s “expressivism” in Marx’s understanding of the human as artist, I begin this essay by examining expressivism in Taylor, followed by its counterpart in M. H. Abrams’s work, namely the wind as metaphor in British Romantic poetry. I then further explore this expressivism/wind connection in Percy Bysshe Shelley’s “Ode to the West Wind” and Marx’s The German Ideology. Ultimately I conclude that these expressive winds lead to poetic gesture per se, and thereby, (...) to a kind of poetry at the heart of Marx’s philosophy. (shrink)

The Twin Earth thought experiment invites us to consider a liquid that has all of the superficial properties associated with water (clear, potable, etc.) but has entirely different deeper causal properties (composed of “XYZ” rather than of H2O). Although this thought experiment was originally introduced to illuminate questions in the theory of reference, it has also played a crucial role in empirically informed debates within the philosophy of psychology about people’s ordinary natural kind concepts. Those debates have sought to accommodate (...) an apparent fact about ordinary people’s judgments: Intuitively, the Twin Earth liquid is not water. We present results from four experiments showing that people do not, in fact, have this intuition. Instead, people tend to have the intuition that there is a sense in which the liquid is not water but also a sense in which it is water. We explore the implications of this finding for debates about theories of natural kind concepts, arguing that it supports views positing two distinct criteria for membership in natural kind categories – one based on deeper causal properties, the other based on superficial, observable properties. (shrink)

The Twin Earth thought experiment invites us to consider a liquid that has all of the superficial properties associated with water (clear, potable, etc.) but has entirely different deeper causal properties (composed of “XYZ” rather than of H2O). Debates about natural kind concepts have sought to accommodate an apparent fact about ordinary people's judgments: Intuitively, the Twin Earth liquid is not water. We present results showing that people do not have this intuition. Instead, people tend to judge that there is (...) a sense in which the liquid is not water but also a sense in which it is water. (shrink)