The mesostriatal dopamine system is prominently implicated in model-free reinforcement learning, with fMRI BOLD signals in ventral striatum notably covarying with model-free prediction errors. However, latent learning and devaluation studies show that behavior also shows hallmarks of model-based planning, and the interaction between model-based and model-free values, prediction errors, and preferences is underexplored. We designed a multistep decision task in which model-based and model-free influences on human choice behavior could be distinguished. By showing that choices reflected both influences we could (...) then test the purity of the ventral striatal BOLD signal as a model-free report. Contrary to expectations, the signal reflected both model-free and model-based predictions in proportions matching those that best explained choice behavior. These results challenge the notion of a separate model-free learner and suggest a more integrated computational architecture for high-level human decision-making. (shrink)

Confirmed COVID-19 cases in the United States increased exponentially, quickly leading to a pandemic in 2020, which created a serious public-health emergency. During the period in which the COVID-1...

This reissue of his collection of early essays, Logico-Linguistic Papers, is published with a brand new introduction by Professor Strawson but, apart from minor ...

Marks individually or in combination constitute images that represent objects. How do those images represent those objects? Marks vary in style, both between and within images. Images also vary in style. How do those styles relate to each other and to the objects that those images represent? Referencing a diverse range of images, we answer the first question with a response-dependence theory of image representation derived from Mark Johnston, differentiating Lockean primary qualities of marks from secondary qualities of images. We (...) answer the second question with a perceptual theory of style derived from Paul Grice, differentiating physical style from image style, and representing conventionally from representing conversationally. (shrink)

Experimental philosophy of language uses experimental methods developed in the cognitive sciences to investigate topics of interest to philosophers of language. This article describes the methodological background for the development of experimental approaches to topics in philosophy of language, distinguishes negative and positive projects in experimental philosophy of language, and evaluates experimental work on the reference of proper names and natural kind terms. The reliability of expert judgments vs. the judgments of ordinary speakers, the role that ambiguity plays in influencing (...) responses to experiments, and the reliability of metalinguistic judgments are also assessed. (shrink)

BackgroundThe terminal illness of late-stage Alzheimer’s and related dementias is progressively cruel, burdensome, and can last years if caregivers assist oral feeding and hydrating. Options to avoid prolonged dying are limited since advanced dementia patients cannot qualify for Medical Aid in Dying. Physicians and judges can insist on clear and convincing evidence that the patient wants to die—which many advance directives cannot provide. Proxies/agents’ substituted judgment may not be concordant with patients’ requests. While advance directives can be patients’ last resort (...) to attain a peaceful and timely dying consistent with their lifelong values, success depends on their being effective and acceptable. A single flaw can provide opponents justification to refuse the directive’s requests to cease assisted feeding.AimThis article considers 24 common advance directive flaws in four categories. Process flaws focus on how patients express their end-of-life wishes. Content flaws reflect drafters’ selection of conditions and interventions, and how they are described. Inherent flaws can make advance directives unacceptable to authorities concerned about premature dying. Strategies are needed to compel physicians to write needed orders and to prevent third parties from sabotaging these orders after they are implemented. The article includes excerpts from “dementia-specific” directives or supplements that exemplify each flaw—mostly from the US and Europe. No directive critiqued here included an effective strategy to resolve this long-debated bioethical conflict: the past directive requests “Cease assisted feeding” but the incapacitated patient apparently expresses the desire to “Continue assisted feeding.” Some opponents to the controversial request, cease assisted feeding, use this conflict as a conceptual wedge to practice hard paternalism. This article proposes a protocol to prevent this conflict from emerging. These strategies may prevent authorities from requiring patients to fulfill authorities’ additional clinical criteria as a prerequisite to honor the requests in patients directives.ConclusionThis critique of flaws may serve as a guide to drafting and to selecting effective and acceptable advance directives for dementia. It also poses several bioethical and clinical questions to those in authority: Does your paternalistic refusal to honor patients’ wishes respect their self-determination? Protect vulnerable patients from harm? Force patients to endure prolonged suffering? Violate the principles of bioethics? Violate the very foundation of patient-centered care? (shrink)

Radical contextualists have observed that the content of what is said by the utterance of a sentence is shaped in far-reaching ways by the context of utterance. And they have argued that the ways in which the content of what is said is shaped by context cannot be explained by semantic theory. A striking number of the examples that radical contextualists use to support their view involve sentences containing color adjectives ("red", "green", etc.). In this paper, I show how the (...) most sophisticated analysis of color adjectives within the explanatory framework of compositional truth conditional semantics—recently developed by Kennedy and McNally (Synthese 174(1): 79-98 2010)—needs to be modified to handle the full range of contextual variation displayed by color adjectives. (shrink)

Using the Public Value Mapping framework, I address the values successes and failures of chemistry as compared to the emerging field of green chemistry, in which the promoters attempt to incorporate new and expanded values, such as health, safety, and environmental sustainability, to the processes of prioritizing and conducting chemistry research. I document how such values are becoming increasingly public. Moreover, analysis of the relations among the multiple values associated with green chemistry displays a greater internal coherence and logic than (...) for conventional chemistry. Although traditional chemistry research has successfully contributed to both economic and values gains, there have been public values failures due to imperfect values articulations, failure to take a longer-term view, and inertia within a system that places too much emphasis on science values. Green chemistry, if implemented effectively, has potential to remedy these failures. (shrink)

The American Society for Bioethics and Humanities has developed a curriculum leading to a certificate in health care ethics consultation. A certification in ethics consultation initially seems to fit nicely into the biomedical model of clinical expertise espoused by modern biomedicine, but examining what exactly constitutes moral expertise, particularly for traditional Christians, reveals a significant problem: the certification relies on an implicit view of ethics as essentially procedural. It leaves virtually all serious moral content to be filled in, if at (...) all, after an ostensibly neutral scaffolding has been erected. Such an approach does not help answer deep moral questions about how one should live, and it is these questions that ought to be encouraged during some conflicts that result in requests for ethics consultations. This paper suggests that, in certain circumstances, and for a subset of patients, encouraging conversion can help remedy the deficiency of an overly mechanized approach. A system open to conversion would have more room for Traditional Christians, regardless of the outcome, as it would take morality as lived, communal experience more seriously and help others, if desired, to do so as well. (shrink)

Recent defenders of metaethical constructivism (like Christine Korsgaard, Sharon Street, Aaron James, and Carla Bagnoli) argue that this view can be shown to represent a new, free-standing alternative to familiar approaches in metaethics. If they are correct, traditional discussions in metaethics have overlooked an important position, one that is supposed to adequately explain the nature of our ethical thinking and practice while avoiding the kinds of objections that traditional views struggle with. However, what form constructivism should take and whether constructivists (...) can make good on this ambitious claim remains extremely controversial. This article starts out with a brief account of the origins of contemporary discussions of constructivism. It then moves on to canvass the main motivations and arguments for constructivism along with the various ways in which the view has been interpreted. In the second half of the article, it introduces a serious challenge to the ambitious claim that constructivism represents a new, free-standing approach in metaethics and concludes by entertaining a very recent proposal that this challenge might overlook. (shrink)

Memoirs of a twenty-year relationship between the author and Ayn Rand, who was his friend, mentor, lover, and enemy. No index. No bibliography. Annotation copyrighted by Book News, Inc., Portland, OR.

ABSTRACTEvidence suggests that older adults experience greater emotional well-being compared to younger adults. Appraisal theories of emotion posit that differences in emotional experience are the...

The philosopher Roberto Unger and the physicist Lee Smolin have recently argued that the current explanatory framework of cosmology, which presumes a timeless background of unchanging physical laws, should be replaced by a thoroughly relational framework in which time is fundamental and all laws are subject to change. Within this alternative framework, however, Unger and Smolin find themselves confronted by a dilemma: either the laws of nature evolve according to some higher set of “meta-laws,” which reinstates a timeless background at (...) a higher level, or the laws of nature evolve randomly and the path of inquiry is blocked. In response to this dilemma, the authors propose a theory of causal events as singular, freely chosen, and self-determined optimalities constrained only by their intrinsic relations to all other events. (shrink)

This paper traces the development of enactive concepts of value and normativity from their roots in the canonical work of Varela et al. through more recent works of Ezequiel Di Paolo and others. It aims to show the central importance of these concepts for enactive theory while exposing a potentially troublesome ambiguity in their definition. Most definitions of enactive normativity are purely proscriptive, but it seems that enactive theories of cognitive agency and experience demand something more. On the other hand, (...) it is not clear that anything other than proscriptive normativity can be made compatible with the enactive tenet of autonomy and the rejection of representations. (shrink)

Abstractabstract:Karl Marx’s acerbic observation in the opening lines of The Eighteenth Brumaire that “all facts and personages of great importance in world history occur the first time as tragedy, the second as farce” may be profitably applied to a reconsideration of literary farce sui generis, a genre represented in this article by a long-neglected work of utopian fiction, Archibald Marshall’s Upsidonia (1915). Although Upsidonia’s current disregard is arguably undeserved, the article’s chief interest is not to reclaim the novel on aesthetic (...) grounds but to illuminate the mechanics of what Marx would call its “serious buffoonery.” In its persistent reversal of capitalist principles and relations, Upsidonia naturally invites readers to revisit Marx, whose mordant gambit may serve as a key to Marshall’s own farcical plot and praxis, rooted in return and repetition, the essential maneuvers of farce itself. (shrink)

Twentieth-century developments in logic and mathematics have led many people to view Euclid’s proofs as inherently informal, especially due to the use of diagrams in proofs. In _Euclid and His Twentieth-Century Rivals_, Nathaniel Miller discusses the history of diagrams in Euclidean Geometry, develops a formal system for working with them, and concludes that they can indeed be used rigorously. Miller also introduces a diagrammatic computer proof system, based on this formal system. This volume will be of interest to mathematicians, (...) computer scientists, and anyone interested in the use of diagrams in geometry. (shrink)

Propositional quantifiers are quantifiers binding proposition letters, understood as variables. This Element introduces propositional quantifiers and explains why they are especially interesting in the context of propositional modal logics. It surveys the main results on propositionally quantified modal logics which have been obtained in the literature, presents a number of open questions, and provides examples of applications of such logics to philosophical problems.

The fact that someone is generous is a reason to admire them. The fact that someone will pay you to admire them is also a reason to admire them. But there is a difference in kind between these two reasons: the former seems to be the ‘right’ kind of reason to admire, whereas the latter seems to be the ‘wrong’ kind of reason to admire. The Wrong Kind of Reasons Problem is the problem of explaining the difference between the ‘right’ (...) and the ‘wrong’ kind of reasons wherever it appears. In this article I argue that two recent proposals for solving the Wrong Kind of Reasons Problem do not work. I then offer an alternative solution that provides a unified, systematic explanation of the difference between the two kinds of reasons. (shrink)

This article conducts a mixed-method content analysis of Chinese and American news media coverage of Google DeepMind’s Go playing computer program, AlphaGo. Drawing on humanistic approaches to artificial intelligence, combined with an empirically rigorous content analysis, it examines the differences and overlap in coverage by the Chinese and American press in their accounts of AlphaGo, and its historic match with Korea’s Lee Sedol in March, 2016. The event was not only followed intensely in China, but also made the front page (...) of The New York Times. This article finds that the Chinese press was more likely than the American press to frame AlphaGo as non-threatening, which the authors attribute to cultural differences and the two countries' different understandings of Go. In addition to quantitatively identifying similarities and differences in the framing of AlphaGo, this paper also investigates the underlying and evolving contestations over what constitutes the “human” and the “machine.” It concludes by discussing the implications of the study’s findings as well as outlining avenues for further research. (shrink)

In 1 Corinthians 15:35–58, Paul combats disagreement in the Corinthian church over the nature of the resurrection. Paul’s argument for the physicality of the resurrection, and his location of the individual’s resurrection within a larger transformation and restoration of all creation, changes how the contemporary church understands and teaches Christian hope, sanctification, and mission.

A divide exists in the creativity literature as to whether relatively more or less executive processing is beneficial to creative thinking. To explore this issue, we employ an individual differences perspective informed by dual-process theories in which it is assumed that people vary in the extent to which they rely on autonomous or controlled processing . We find that those more willing and/or able to engage Type 2 processing are more likely to successfully make creative connections in tasks requiring the (...) unification of disparate elements and the novelty of generated items, but not in some other indices of creativity, namely, cognitive flexibility and fluency. Implications for the role of executive processing in creative thinking are discussed in the context of DPTs. We situate the ability to make remote connections alongside other advanced higher order thinking capabilities that are unique to humans. (shrink)

Epistemic instrumentalists face a puzzle. In brief, the puzzle is that if the reason there is to believe in accord with the evidence depends, as the instrumentalist says it does, on agents’ idiosyncratic interests, then there is no reason to expect that this reason is universal. Here, I identify and explain two strategies instrumentalists have used to try and solve this puzzle. I then argue that we should find these strategies wanting. Faced with the failure of these strategies, I articulate (...) a heretofore neglected solution on behalf of instrumentalism. (shrink)

One of the many senses of the word spirituality—surely one of the vaguest words in the modern English language—is that of a special quality of life, a sublime fulfillment that somehow transcends the vicissitudes of fortune. According to this sense, spiritual people experience life as having such abundance of value or meaning that they can endure great hardship and tragedy without coming to despair. This abiding fullness and the equanimity it provides are perhaps the greatest prize of the spiritual life.Spiritual (...) fulfillment was once claimed as the special reward of religion, but no longer. In late modernity "spiritual but not religious" has become a commonplace self-description, and presumably this concept of .. (shrink)

Do epistemic requirements vary along with facts about what promotes agents' well-being? Epistemic instrumentalists say 'yes', and thereby earn a lot of contempt. This contempt is a mistake on two counts. First, it is incorrectly based: the reasons typically given for it are misguided. Second, it fails to distinguish between first- and second-order epistemic instrumentalism; and, it happens, only the former is contemptible. In this book, Nathaniel P. Sharadin argues for rejecting epistemic instrumentalism as a first-order view not because (...) it suffers extensional failures, but because it suffers explanatory ones. By contrast, he argues that epistemic instrumentalism offers a natural, straightforward explanation of why being epistemically correct matters. What emerges is a second-order instrumentalist explanation for epistemic authority that is neutral between competing first-order epistemic theories. This neutrality is an advantage. But, drawing on work from cognitive science and psychology, Sharadin argues that instrumentalists can abandon that neutrality in order to adopt a view he calls epistemic ecologism. Epistemic Instrumentalism Explained will be of interest to researchers and advanced students working in epistemology, ethics, and philosophy of mind. (shrink)

The relationship between Rand and Branden changed over eighteen yaears from student and teacher, to friends, to colleagues, to lovers and finally antagonists.

In the study of innovation institutions, it is important to consider how different institutional models can affect a research organization in conducting or funding successful work. As an industry collaborative, Semiconductor Research Corporation provides an example of a privately funded institution that leverages the inputs of several member companies, along with federal funding, to accomplish innovation in its mission area. SRC has several component programs, all attempting to find innovative solutions to semiconductor problems, but on different time scales, and in (...) different technology areas. But how does SRC use its resources to ensure these goals? Through data gathered from semi-structured qualitative interviews and SRC documentation, this paper addresses that question. SRC has found a way to leverage industry money to motivate and develop a robust field of university research for over 30 years. SRC uses several mechanisms for maintaining an application focused, member-centered decision process, institutional flexibility, and strong ties between industry contributors and university researchers. SRC has continued to keep its members satisfied by training thousands of graduate students for employment in their member companies, by focusing on precompetitive research that addresses industry requirements, and doing so in a manner that operates leanly, with low overhead to its funders. Given these successes, we identify aspects of SRC operations, such as a focus on its member company needs, frequent interactions between funders and researchers, flexible funding mechanisms, and focus on workforce development, that may be diffusible to innovation institutions, including federal research efforts. (shrink)