Results for 'John A. Barker'

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  1. Epistemic Closure and Skepticism.John A. Barker & Fred Adams - 2010 - Logos and Episteme 1 (2):221-246.
    Closure is the epistemological thesis that if S knows that P and knows that P implies Q, then if S infers that Q, S knows that Q. Fred Dretske acknowledges that closure is plausible but contends that it should be rejected because it conflicts with the plausible thesis: Conclusive reasons (CR): S knows that P only if S believes P on the basis of conclusive reasons, i.e., reasons S wouldn‘t have if it weren‘t the case that P. Dretske develops an (...)
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  2. What You Don't Know Won't Hurt You?John A. Barker - 1976 - American Philosophical Quarterly 13 (4):303 - 308.
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  3. Knowledge as Fact-Tracking True Belief.Fred Adams, John A. Barker & Murray Clarke - 2017 - Manuscrito 40 (4):1-30.
    ABSTRACT Drawing inspiration from Fred Dretske, L. S. Carrier, John A. Barker, and Robert Nozick, we develop a tracking analysis of knowing according to which a true belief constitutes knowledge if and only if it is based on reasons that are sensitive to the fact that makes it true, that is, reasons that wouldn’t obtain if the belief weren’t true. We show that our sensitivity analysis handles numerous Gettier-type cases and lottery problems, blocks pathways leading to skepticism, and (...)
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  4. (1 other version)Computer modeling and the fate of folk psychology.John A. Barker - 2002 - Metaphilosophy 33 (1-2):30-48.
    Although Paul Churchland and Jerry Fodor both subscribe to the so-called theory-theory– the theory that folk psychology (FP) is an empirical theory of behavior – they disagree strongly about FP’s fate. Churchland contends that FP is a fundamentally flawed view analogous to folk biology, and he argues that recent advances in computational neuroscience and connectionist AI point toward development of a scientifically respectable replacement theory that will give rise to a new common-sense psychology. Fodor, however, wagers that FP will be (...)
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  5. Presupposition and entailment.John A. Barker - 1976 - Notre Dame Journal of Formal Logic 17 (2):272-278.
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  6. Beat the (Backward) Clock.Fred Adams, John A. Barker & Murray Clarke - 2016 - Logos and Episteme 7 (3):353-361.
    In a recent very interesting and important challenge to tracking theories of knowledge, Williams & Sinhababu claim to have devised a counter-example to tracking theories of knowledge of a sort that escapes the defense of those theories by Adams & Clarke. In this paper we will explain why this is not true. Tracking theories are not undermined by the example of the backward clock, as interesting as the case is.
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  7. Methods Matter: Beating the Backward Clock.Murray Clarke, Fred Adams & John A. Barker - 2017 - Logos and Episteme 8 (1):99-112.
    In “Beat the (Backward) Clock,” we argued that John Williams and Neil Sinhababu’s Backward Clock Case fails to be a counterexample to Robert Nozick’s or Fred Dretske’s Theories of Knowledge. Williams’ reply to our paper, “There’s Nothing to Beat a Backward Clock: A Rejoinder to Adams, Barker and Clarke,” is a further attempt to defend their counterexample against a range of objections. In this paper, we argue that, despite the number and length of footnotes, Williams is still wrong.
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  8. Semantics without the distinction between sense and force.Stephen J. Barker - 2007 - In Savas L. Tsohatzidis (ed.), John Searle's Philosophy of Language: Force, Meaning and Mind. Cambridge University Press. pp. 190-210.
    At the heart of semantics in the 20th century is Frege’s distinction between sense and force. This is the idea that the content of a self-standing utterance of a sentence S can be divided into two components. One part, the sense, is the proposition that S’s linguistic meaning and context associates with it as its semantic interpretation. The second component is S’s illocutionary force. Illocutionary forces correspond to the three basic kinds of sentential speech acts: assertions, orders, and questions. Forces (...)
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  9. Biological explanations, realism, ontology, and categories.Matthew J. Barker - 2013 - Studies in History and Philosophy of Science Part C: Studies in History and Philosophy of Biological and Biomedical Sciences 44 (4):617-622.
    This is an extended review of John Dupré's _Processes of Life_, a collection of essays. It clarifies Dupré's concepts of reductionism and anti-reductionism, and critically examines his associated discussions of downward causation, and both the context sensitivity and multiple realization of categories. It reviews his naturalistic monism, and critically distinguishes between his realism about categories and constructivism about classification. Challenges to his process ontology are presented, as are arguments for his pluralism about scientific categories. None of his main conclusions (...)
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  10. There’s nothing to beat a backward clock: A rejoinder to Adams, Barker and Clarke.John N. Williams - 2016 - Logos and Episteme 7 (3):363-378.
    Neil Sinhababu and I presented Backward Clock, an original counterexample to Robert Nozick’s truth-tracking analysis of propositional knowledge. Fred Adams, John Barker and Murray Clarke argue that Backward Clock is no such counterexample. Their argument fails to nullify Backward Clock which also shows that other tracking analyses, such as Dretske’s and one that Adams et al. may well have in mind, are inadequate.
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  11. When Traditional Essentialism Fails: Biological Natural Kinds.Robert A. Wilson, Matthew J. Barker & Ingo Brigandt - 2007 - Philosophical Topics 35 (1-2):189-215.
    Essentialism is widely regarded as a mistaken view of biological kinds, such as species. After recounting why (sections 2-3), we provide a brief survey of the chief responses to the “death of essentialism” in the philosophy of biology (section 4). We then develop one of these responses, the claim that biological kinds are homeostatic property clusters (sections 5-6) illustrating this view with several novel examples (section 7). Although this view was first expressed 20 years ago, and has received recent discussion (...)
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  12. A Manifesto for a Processual Philosophy of Biology.John A. Dupre & Daniel J. Nicholson - 2018 - In Daniel J. Nicholson & John Dupré (eds.), Everything Flows: Towards a Processual Philosophy of Biology. Oxford, United Kingdom: Oxford University Press.
    This chapter argues that scientific and philosophical progress in our understanding of the living world requires that we abandon a metaphysics of things in favour of one centred on processes. We identify three main empirical motivations for adopting a process ontology in biology: metabolic turnover, life cycles, and ecological interdependence. We show how taking a processual stance in the philosophy of biology enables us to ground existing critiques of essentialism, reductionism, and mechanicism, all of which have traditionally been associated with (...)
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  13. Biological Individuals.Robert A. Wilson & Matthew J. Barker - 2024 - Stanford Encyclopedia of Philosophy.
    The impressive variation amongst biological individuals generates many complexities in addressing the simple-sounding question what is a biological individual? A distinction between evolutionary and physiological individuals is useful in thinking about biological individuals, as is attention to the kinds of groups, such as superorganisms and species, that have sometimes been thought of as biological individuals. More fully understanding the conceptual space that biological individuals occupy also involves considering a range of other concepts, such as life, reproduction, and agency. There has (...)
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  14. Letter Regarding Canada's Bill C-7, Medical Assistance in Dying (MAID) and Disability.Robert A. Wilson & Matthew J. Barker - manuscript
    This letter was submitted to the Senate Standing Committee on Legal and Constitutional Affairs, Government of Canada, on 29th January, 2021, as final debate over Bill C-7 was being undertaken in the Senate regarding MAiD and the strong opposition to the legislation expressed across the Canadian disability community. It draws on our individual and joint work on eugenics, well-being, and disability.
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  15. Uncertain reasoning about agents' beliefs and reasoning.John A. Barnden - 2001 - Artificial Intelligence and Law 9 (2-3):115-152.
    Reasoning about mental states and processes is important in various subareas of the legal domain. A trial lawyer might need to reason and the beliefs, reasoning and other mental states and processes of members of a jury; a police officer might need to reason about the conjectured beliefs and reasoning of perpetrators; a judge may need to consider a defendant's mental states and processes for the purposes of sentencing and so on. Further, the mental states in question may themselves be (...)
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  16. Varieties and Directions of Interdomain Influence in Metaphor.John A. Barnden, Sheila R. Glasbey, Mark G. Lee & Alan M. Wallington - 2004 - Metaphor and Symbol 19 (1):1-30.
    We consider the varieties and directions of influence that the source and target domains involved in a conceptual metaphor can have on each other during the course of understanding metaphorical utterances based on the metaphor. Previous studies have been restricted both as to direction of influence and as to type of influence. They have been largely confined to the “forward” (source to target) direction of influence, and they have concentrated on the transfer of features or propositions and (to some extent) (...)
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  17. Imputations and Explications: Representational Problems in Treatments of Prepositional Attitudes.John A. Barnden - 1986 - Cognitive Science 10 (3):319-364.
    The representation of propositional attitudes (beliefs, desires, etc.) and the analysis of natural-language, propositional-attitude reports presents difficult problems for cognitive science and artificial intelligence. In particular, various representational approaches to attitudes involve the incorrect “imputation,” to cognitive agents, of the use of artificial theory-laden notions. Interesting cases of this problem are shown to occur in several approaches to attitudes. The imputation problem is shown to arise from the way that representational approaches explicate properties and relationships, and in particular from the (...)
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  18. Connectionism, generalization, and propositional attitudes: A catalogue of challenging issues.John A. Barnden - 1992 - In John Dinsmore (ed.), The Symbolic and Connectionist Paradigms: Closing the Gap. Lawrence Erlbaum. pp. 149--178.
    [Edited from Conclusion section:] We have looked at various challenging issues to do with getting connectionism to cope with high-level cognitive activities such a reasoning and natural language understanding. The issues are to do with various facets of generalization that are not commonly noted. We have been concerned in particular with the special forms these issues take in the arena of propositional attitude processing. The main problems we have looked at are: (1) The need to construct explicit representations of generalizations, (...)
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  19. The Meta-Dynamic Nature of Consciousness.John A. Barnden - 2020 - Entropy 22.
    How, if at all, consciousness can be part of the physical universe remains a baffling problem. This article outlines a new, developing philosophical theory of how it could do so, and offers a preliminary mathematical formulation of a physical grounding for key aspects of the theory. Because the philosophical side has radical elements, so does the physical-theory side. The philosophical side is radical, first, in proposing that the productivity or dynamism in the universe that many believe to be responsible for (...)
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  20. Pre-Reflective Self-Consciousness: A Meta-Causal Approach.John A. Barnden - 2022 - Review of Philosophy and Psychology 13 (2):397-425.
    I present considerations surrounding pre-reflective self-consciousness, arising in work I am conducting on a new physicalist, process-based account of [phenomenal] consciousness. The account is called the meta-causal account because it identifies consciousness with a certain type of arrangement of meta-causation. Meta-causation is causation where a cause or effect is itself an instance of causation. The proposed type of arrangement involves a sort of time-spanning, internal reflexivity of the overall meta-causation. I argue that, as a result of the account, any conscious (...)
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  21. Michael A. Arbib, The metaphorical brain 2: Neural networks and beyond.John A. Barnden - 1998 - Artificial Intelligence 101 (1-2):301-309.
    The book is thought-provoking and informative, wide in scope while also being technically detailed, and still relevant to modem AI [at least as of 1998, the time of writing this review, but probably also at the time of posting this entry here, 2023] even though it was published in 1989. This relevance lies mainly in the book’s advocacy of distributed computation at multiple levels of description, its combining of neural networks and other techniques, its emphasis on the interplay between action (...)
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  22. Simulative reasoning, common-sense psychology and artificial intelligence.John A. Barnden - 1995 - In Martin Davies & Tony Stone (eds.), Mental Simulation: Evaluations and Applications. Blackwell. pp. 247--273.
    The notion of Simulative Reasoning in the study of propositional attitudes within Artificial Intelligence (AI) is strongly related to the Simulation Theory of mental ascription in Philosophy. Roughly speaking, when an AI system engages in Simulative Reasoning about a target agent, it reasons with that agent’s beliefs as temporary hypotheses of its own, thereby coming to conclusions about what the agent might conclude or might have concluded. The contrast is with non-simulative meta-reasoning, where the AI system reasons within a detailed (...)
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  23. Connectionist value units: Some concerns.John A. Barnden - 1986 - Behavioral and Brain Sciences 9 (1):92-93.
    This paper is a commentary on the target article by Dana H. Ballard, “Cortical connections and parallel processing: Structure and function”, in the same issue of the journal, pp. 67–120. -/- I raise some issues about the connectionist or neural-network implementation of information and information processing. Issues include the sharing of information by different parts of a connectionist/neural network, the copying of complex information from one place to another in a network, the possibility of connection weights not being synaptic weights, (...)
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  24. Time phases, pointers, rules and embedding.John A. Barnden - 1993 - Behavioral and Brain Sciences 16 (3):451-452.
    This paper is a commentary on the target article by Lokendra Shastri & Venkat Ajjanagadde [S&A]: “From simple associations to systematic reasoning: A connectionist representation of rules, variables and dynamic bindings using temporal synchrony” in same issue of the journal, pp.417–451. -/- It puts S&A's temporal-synchrony binding method in a broader context, comments on notions of pointing and other ways of associating information - in both computers and connectionist systems - and mentions types of reasoning that are a challenge to (...)
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  25. Metaphor and its unparalleled meaning and truth.John A. Barnden & Alan M. Wallington - 2010 - In Armin Burkhardt & Brigitte Nerlich (eds.), Tropical Truth(S): The Epistemology of Metaphor and Other Tropes. De Gruyter. pp. 85-122.
    This article arises indirectly out of the development of a particular approach, called ATT-Meta, to the understanding of some types of metaphorical utterance. However, the specifics of the approach are not the focus of the present article, which concentrates on some general issues that have informed, or arisen from, the development of the approach. The article connects those issues to the questions of metaphorical meaning and truth. -/- A large part of the exploration of metaphor in fields such as Cognitive (...)
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  26. Chaos, symbols, and connectionism.John A. Barnden - 1987 - Behavioral and Brain Sciences 10 (2):174-175.
    The paper is a commentary on the target article by Christine A. Skarda & Walter J. Freeman, “How brains make chaos in order to make sense of the world”, in the same issue of the journal, pp.161–195. -/- I confine my comments largely to some philosophical claims that Skarda & Freeman make and to the relationship of their model to connectionism. Some of the comments hinge on what symbols are and how they might sit in neural systems.
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  27. Consciousness and Common Sense: Metaphors of Mind.John A. Barnden - 1997 - In S. O'Nuillain, Paul McKevitt & E. MacAogain (eds.), Two Sciences of Mind. John Benjamins. pp. 311-340.
    The science of the mind, and of consciousness in particular, needs carefully to consider people's common-sense views of the mind, not just what the mind really is. Such views are themselves an aspect of the nature of (conscious) mind, and therefore part of the object of study for a science of mind. Also, since the common-sense views allow broadly successful social interaction, it is reasonable to look to the common-sense views for some rough guidance as to the real nature of (...)
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  28. The centrality of instantiations.John A. Barnden - 1987 - Behavioral and Brain Sciences 10 (3):437-438.
    This paper is a commentary on the target article by Michael Arbib, “Levels of modeling of mechanisms of visually guided behavior”, in the same issue of the journal, pp. 407–465. -/- I focus on the importance of the inclusion of an ability of a system to entertain, at a given time, multiple instantiations of a given schema (situation template, frame, script, action plan, etc.), and complications introduced into neural/connectionist network systems by such inclusion.
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  29. Measurement scales and welfarist social choice.Michael Morreau & John A. Weymark - 2016 - Journal of Mathematical Psychology 75:127-136.
    The social welfare functional approach to social choice theory fails to distinguish a genuine change in individual well-beings from a merely representational change due to the use of different measurement scales. A generalization of the concept of a social welfare functional is introduced that explicitly takes account of the scales that are used to measure well-beings so as to distinguish between these two kinds of changes. This generalization of the standard theoretical framework results in a more satisfactory formulation of welfarism, (...)
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  30.  36
    The Utility of Reserved Transfers in Metaphor.A. Barnden John - 2001 - Proceedings of the 23Rd Meeting of the Cognitive Science Society.
    In metaphor research there is usually some notion of transfer of aspects of the source domain to the target domain. More rarely, transfers in the opposite direction are countenanced, affecting one’s perception of source as well as target. This paper argues that, even without this aim, transfers from target to source should happen. One radical claim here is that it is often better to translate information from literal sentences into prevailing metaphorical terms than to translate the information from metaphorical sentences (...)
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  31. Sensorimotor accounts of joint attention.Alexander Maye, Carme Isern-Mas, Pamela Barone & John A. Michael - 2017 - Scholarpedia 12 (2):42361.
    Joint attention is a social-cognitive phenomenon in which two or more agents direct their attention together towards the same object. Definitions range from this rather broad conception to more specific definitions which require that, in addition, attention be directed to the same aspect of that object and that agents need to be mutually aware of their jointly attending. Joint attention is an important coordination mechanism in joint action. The capacity for engaging in joint attention, in particular in the sense of (...)
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  32. Well-being, Disability, and Choosing Children.Matthew J. Barker & Robert A. Wilson - 2019 - Mind 128 (510):305-328.
    The view that it is better for life to be created free of disability is pervasive in both common sense and philosophy. We cast doubt on this view by focusing on an influential line of thinking that manifests it. That thinking begins with a widely-discussed principle, Procreative Beneficence, and draws conclusions about parental choice and disability. After reconstructing two versions of this argument, we critique the first by exploring the relationship between different understandings of well-being and disability, and the second (...)
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  33. References.John Bengson & Marc A. Moffett - 2011 - In John Bengson & Marc A. Moffett (eds.), Knowing How: Essays on Knowledge, Mind, and Action. Oxford, England: Oxford University Press USA. pp. 361-386.
    This compilation of references includes all references for the knowledge-how chapters included in Bengson & Moffett's edited volume. The volume and the compilation of references may serve as a good starting point for people who are unfamiliar with the philosophical literature on knowledge-how.
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  34. Cohesion, Gene flow, and the Nature of Species.Matthew J. Barker & Robert A. Wilson - 2010 - Journal of Philosophy 107 (2):59-77.
    A far-reaching and influential view in evolutionary biology claims that species are cohesive units held together by gene flow. Biologists have recognized empirical problems facing this view; after sharpening the expression of the view, we present novel conceptual problems for it. At the heart of these problems is a distinction between two importantly different concepts of cohesion, what we call integrative and response cohesion. Acknowledging the distinction problematizes both the explanandum of species cohesion and the explanans of gene flow that (...)
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  35. FILIPINO TIKTOK INFLUENCERS AND PURCHASING BEHAVIOR OF YOUNG PROFESSIONALS.Rizza G. De La Luna, Al John A. Apana, Ivan Claude D. Aure, Joyce S. Catapang, Simon Jude A. Galut, Hazon B. Punongbayan & Jowenie A. Mangarin - 2024 - Get International Research Journal 2 (1):148–164.
    The traditional use of conventional media by businesses for audience targeting has shifted with the rise of influencer marketing, notably on platforms like TikTok, posing challenges in content adaptation and technological adaptation. Albert Bandura's Social Cognitive Theory examines factors shaping purchasing behavior, particularly relevant for young professionals. A quantitative correlational study focused on young professionals engaging with TikTok and influenced by Filipino TikTok creators, revealing education level as a key determinant of purchasing behavior. Extended TikTok engagement positively correlates with increased (...)
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  36. Framework for a protein ontology.Darren A. Natale, Cecilia N. Arighi, Winona Barker, Judith Blake, Ti-Cheng Chang, Zhangzhi Hu, Hongfang Liu, Barry Smith & Cathy H. Wu - 2007 - BMC Bioinformatics 8 (Suppl 9):S1.
    Biomedical ontologies are emerging as critical tools in genomic and proteomic research where complex data in disparate resources need to be integrated. A number of ontologies exist that describe the properties that can be attributed to proteins; for example, protein functions are described by Gene Ontology, while human diseases are described by Disease Ontology. There is, however, a gap in the current set of ontologies—one that describes the protein entities themselves and their relationships. We have designed a PRotein Ontology (PRO) (...)
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  37. Representationalism, supervenience, and the cross-modal problem.John W. O’dea - 2006 - Philosophical Studies 130 (2):285-95.
    The representational theory of phenomenal experience is often stated in terms of a supervenience thesis: Byrne recently characterises it as the thesis that “there can be no difference in phenomenal character without a difference in content”, while according to Tye, “[a]t a minimum, the thesis is one of supervenience: necessarily, experiences that are alike in their representational contents are alike in their phenomenal character.” Consequently, much of the debate over whether representationalism is true centres on purported counter-examples – that is (...)
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  38. Knowledge, adequacy, and approximate truth.Wesley Buckwalter & John Turri - 2020 - Consciousness and Cognition 83 (C):102950.
    Approximation involves representing things in ways that might be close to the truth but are nevertheless false. Given the widespread reliance on approximations in science and everyday life, here we ask whether it is conceptually possible for false approximations to qualify as knowledge. According to the factivity account, it is impossible to know false approximations, because knowledge requires truth. According to the representational adequacy account, it is possible to know false approximations, if they are close enough to the truth for (...)
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  39. Desire.Kyle Blumberg & John Hawthorne - 2022 - Philosophers' Imprint 22.
    In this paper, we present two puzzles involving desire reports concerning series of events. What does a person want to happen in the first event – is it the event with the highest expected return, or the event that is the initial part of the best series? We show that existing approaches fail to resolve the puzzles around this question and develop a novel account of our own. Our semantics is built around three ideas. First, we propose that desire ascriptions (...)
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  40. Knowledge from multiple experiences.Simon Goldstein & John Hawthorne - 2021 - Philosophical Studies 179 (4):1341-1372.
    This paper models knowledge in cases where an agent has multiple experiences over time. Using this model, we introduce a series of observations that undermine the pretheoretic idea that the evidential significance of experience depends on the extent to which that experience matches the world. On the basis of these observations, we model knowledge in terms of what is likely given the agent’s experience. An agent knows p when p is implied by her epistemic possibilities. A world is epistemically possible (...)
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  41. Headed records: A model for memory and its failures.John Morton, Richard H. Hammersley & D. A. Bekerian - 1985 - Cognition 20 (1):1-23.
    It is proposed that our memory is made up of individual, unconnected Records, to each of which is attached a Heading. Retrieval of a Record can only be accomplished by addressing the attached Heading, the contents of which cannot itself be retrieved. Each Heading is made up of a mixture of content in more or less literal form and context, the latter including specification of environment and of internal states (e.g. drug states and mood). This view of memory allows an (...)
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  42. Agency and Evidence.Berislav Marusic & John Schwenkler - 2022 - In Luca Ferrero (ed.), The Routledge Handbook of Philosophy of Agency. New York, NY: Routledge. pp. 244-252.
    How does evidence figure into the reasoning of an agent? This is an intricate philosophical problem but also one we all encounter in our daily lives. In this chapter, we identify the problem and outline a possible solution to it. The problem arises, because the fact that it is up to us whether we do something makes a difference to how we should think of the evidence concerning whether we will actually do it. Otherwise we regard something that is up (...)
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  43. The Why and the How of Renewal in Philosophy of Religion.Paul Draper & John L. Schellenberg - 2022 - European Journal for Philosophy of Religion 14 (1):1-20.
    In this paper, we aim to get clear about why renewal is needed in philosophy of religion and how to achieve it. We begin with a fundamental distinction between someone’s perspective in the field and the perspective of the field, arguing that any philosopher of religion is responsible to both. Then we identify eight problems that should prevent the status quo in philosophy from appearing acceptable to anyone who takes the perspective of the field, as well as seven practical suggestions (...)
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  44. Don’t Worry, Be Happy: The Gettability of Ultimate Meaning.Michael-John Turp, Brylea Hollinshead & Stephen Rowe - 2022 - Journal of Controversial Ideas 2 (1).
    Rivka Weinberg advances an error theory of ultimate meaning with three parts: (1) a conceptual analysis, (2) the claim that the extension of the concept is empty, and (3) a proposed fitting response, namely being very, very sad. Weinberg’s conceptual analysis of ultimate meaning involves two features that jointly make it metaphysically impossible, namely (i) the separateness of activities and valued ends, and (ii) the bounded nature of human lives. Both are open to serious challenges. We offer an internalist alternative (...)
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  45. Debunking Arguments and Metaphysical Laws.Jonathan Barker - 2020 - Philosophical Studies 177 (7):1829-1855.
    I argue that one’s views about which “metaphysical laws” obtain—including laws about what is identical with what, about what is reducible to what, and about what grounds what—can be used to deflect or neutralize the threat posed by a debunking explanation. I use a well-known debunking argument in the metaphysics of material objects as a case study. Then, after defending the proposed strategy from the charge of question-begging, I close by showing how the proposed strategy can be used by certain (...)
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  46. Against Purity.Jonathan Barker - 2023 - Ergo: An Open Access Journal of Philosophy 9.
    A fundamental fact is “pure” just in case it has no grounded entities—ex. Tokyo, President Biden, the River Nile, {Socrates}, etc.—among its constituents. Purity is the thesis that every fundamental fact is pure. I argue that Purity is false. My argument begins with a familiar conditional: if Purity is true, then there are no fundamental “grounding facts” or facts about what grounds what. This conditional is accepted by virtually all of Purity’s defenders. However, I argue that it is also the (...)
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  47. Respecting One’s Fellow: QBism’s Analysis of Wigner’s Friend.John B. DeBrota, Christopher A. Fuchs & Rüdiger Schack - 2020 - Foundations of Physics 50 (12):1859-1874.
    According to QBism, quantum states, unitary evolutions, and measurement operators are all understood as personal judgments of the agent using the formalism. Meanwhile, quantum measurement outcomes are understood as the personal experiences of the same agent. Wigner’s conundrum of the friend, in which two agents ostensibly have different accounts of whether or not there is a measurement outcome, thus poses no paradox for QBism. Indeed the resolution of Wigner’s original thought experiment was central to the development of QBist thinking. The (...)
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  48. Negativity Bounds for Weyl–Heisenberg Quasiprobability Representations.John B. DeBrota & Christopher A. Fuchs - 2017 - Foundations of Physics 47 (8):1009-1030.
    The appearance of negative terms in quasiprobability representations of quantum theory is known to be inevitable, and, due to its equivalence with the onset of contextuality, of central interest in quantum computation and information. Until recently, however, nothing has been known about how much negativity is necessary in a quasiprobability representation. Zhu :120404, 2016) proved that the upper and lower bounds with respect to one type of negativity measure are saturated by quasiprobability representations which are in one-to-one correspondence with the (...)
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  49. Grounding and the Myth of Ontological Innocence.Jonathan Barker - 2021 - Australasian Journal of Philosophy 99 (2):303-318.
    According to the Ontological Innocence Thesis (OIT), grounded entities are ontologically innocent relative to their full grounds. I argue that OIT entails a contradiction, and therefore must be discarded. My argument turns on the notion of “groundmates,” two or more numerically distinct entities that share at least one of their full grounds. I argue that, if OIT is true, then it is both the case that there are groundmates and that there are no groundmates. Therefore, so I conclude, OIT is (...)
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  50. Williams on Ought.John Broome - 2012 - In Ulrike Heuer & Gerald Lang (eds.), Luck, Value, and Commitment: Themes from the Ethics of Bernard Williams. Oxford, GB: Oxford University Press USA.
    In 2002, Bernard Williams delivered a lecture that revisited the arguments of his article 'Ought and moral obligation', published in his Moral Luck. The lecture attributed to the earlier article the thesis that there are no ‘personal’ or (as I put it) ‘owned’ oughts. It also rejected this thesis. This paper explains the idea of an owned ought, and supports Williams’s lecture in asserting that there are owned oughts. It also examines the question of how accurately Williams’s later lecture interprets (...)
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