•  107
    Chatbot apologies: Beyond bullshit
    AI and Ethics 5 (5): 5517-5525. 2025.
    Apologies serve essential functions for moral agents such as expressing remorse, taking responsibility, and repairing trust. LLM-based chatbots routinely produce output that has the linguistic form of an apology. However, they do this simply because they are echoing the kinds of things that humans say. Moreover, there are reasons to think that chatbots are not the kind of linguistic or moral agents capable of apology. To put the point bluntly: Chatbot apologies are bullshit. This paper explores …Read more
  • Historical Individuals Like Anas platyrhynchos and ‘Classical Gas’
    In Christy Mag Uidhir (ed.), Art and abstract objects, Oxford University Press. pp. 108-124. 2012.
    Although biological species were once examples of natural kinds, philosophers of biology have come to think of them as individuals. Similar reasons suggest that multiple-instance works of art (musical works, prints), might better be thought of as individuals. Although the motivation is different, the resulting nominalist-friendly ontology is similar to one proposed by Rohrbaugh. This chapter explores how the analogy can motivate such a metaphysical view and reveals a difference between species a…Read more
  •  418
    Pragmatism, Moral Imagination, and Existential Choices
    In Jonathan Y. Tsou, Shaw Jamie & Carla Fehr (eds.), Values, Pluralism, and Pragmatism: Themes from the Work of Matthew J. Brown, Boston Studies in the Philosophy and History of Science. Springer. pp. 219-228. 2025.
    This paper addresses the ideal of moral imagination, Matthew Brown’s pragmatist account of how to reason about values in science. Pragmatism points our attention to practical consequences, but practical for whom? Brown follows John Dewey in thinking that this should be actually existing stakeholders. Extending Hilary Putnam’s juxtaposition of Dewey and William James, I suggest that personal existential choices may pose a problem for such an account. In some cases, it looks as if individuals shou…Read more
  •  812
    Music Genres as Historical Individuals
    with Emmie Malone and Brandon Polite
    British Journal of Aesthetics. forthcoming.
    Musicians, listeners, and record labels sort music into genres like jazz, punk, heavy metal, and so on. Metaphysically, what kind of thing is a genre? This paper explores the idea that music genres are historical individuals. The obvious way to develop this is to think of a music genre as being like a biological species. Although that approach has much to recommend it, we argue that it faces an insuperable difficulty: what we dub the problem of independent origins. We argue, instead, that a genr…Read more
  •  923
    On trusting chatbots
    Episteme 22 (4): 906-916. 2025.
    This paper focuses on the epistemic situation one faces when using a Large Language Model based chatbot like ChatGPT: When reading the output of the chatbot, how should one decide whether or not to believe it? By surveying strategies we use with other, more familiar sources of information, I argue that chatbots present a novel challenge. This makes the question of how one could trust a chatbot especially vexing.
  •  633
    A brief overview of _A Philosophy of Cover Songs_, highlighting some of the main themes in the book. The first part addresses the nature of covers and makes some important initial distinctions. The second part addresses the appreciation and evaluation of covers. The third part addresses covers as a clue to the ontology of songs. Written to introduce a session at the American Society for Aesthetics Rocky Mountain Division meeting in Santa Fe, New Mexico (July 13, 2024).
  •  1014
    Does Art Pluralism Lead to Eliminativism?
    Estetika: The European Journal of Aesthetics 61 (1): 73-80. 2024.
    A critical note on Christopher Bartel and Jack M. C. Kwong, ‘Pluralism, Eliminativism, and the Definition of Art’, Estetika 58 (2021): 100–113. Art pluralism is the view that there is no single, correct account of what art is. Instead, art is understood through a plurality of art concepts and with considerations that are different for particular arts. Although avowed pluralists have retained the word ‘art’ in their discussions, it is natural to ask whether the considerations that motivate plural…Read more
  •  1484
    Generative AI and photographic transparency
    AI and Society 40 (3): 1607-1612. 2025.
    There is a history of thinking that photographs provide a special kind of access to the objects depicted in them, beyond the access that would be provided by a painting or drawing. What is included in the photograph does not depend on the photographer’s beliefs about what is in front of the camera. This feature leads Kendall Walton to argue that photographs literally allow us to see the objects which appear in them. Current generative algorithms produce images in response to users’ text prompts.…Read more
  •  51
    People who bought books you like also like this book (review)
    Metascience 32 269-271. 2023.
    A review of Nick Seaver's Computing Taste: Algorithms and the Makers of Music Recommendation (University of Chicago Press, 2022)
  •  1406
    Popular Music and Art-interpretive Injustice
    Inquiry: An Interdisciplinary Journal of Philosophy. 2023.
    It has been over two decades since Miranda Fricker labeled epistemic injustice, in which an agent is wronged in their capacity as a knower. The philosophical literature has proliferated with variants and related concepts. By considering cases in popular music, we argue that it is worth distinguishing a parallel phenomenon of art-interpretive injustice, in which an agent is wronged in their creative capacity as a possible artist. In section 1, we consider the prosecutorial use of rap lyrics in co…Read more
  •  1002
    Scurvy and the ontology of natural kinds
    Philosophy of Science 80 (5): 1031-1039. 2023.
    Some philosophers understand natural kinds to be the categories which are constraints on enquiry. In order to elaborate the metaphysics appropriate to such an account, I consider the complicated history of scurvy, citrus, and vitamin C. It may be tempting to understand these categories in a shallow way (as mere property clusters) or in a deep way (as fundamental properties). Neither approach is adequate, and the case instead calls for middle-range ontology: starting from categories which we iden…Read more
  •  787
    Appreciating covers
    with Cristyn Magnus, Christy Mag Uidhir, and Ron Mcclamrock
    Nordic Journal of Aesthetics 31 (63). 2022.
    A recording or performance of a song is a cover if there is an earlier, canonical recording of the song. It can seem intuitive to think that properly appreciating a cover requires considering it in relation to the original, or at least that doing so will yield a deeper appreciation. This intuition is supported by some philosophical accounts of covers. And it is complicated by the possibility of hearing in, whereby one hears elements of the original version in the cover. We argue that it can neve…Read more
  •  1074
    A Philosophy of Cover Songs
    Open Book Publishers. 2022.
    Cover songs are a familiar feature of contemporary popular music. Musicians describe their own performances as covers, and audiences use the category to organize their listening and appreciation. However, until now philosophers have not had much to say about them. This book explores how to think about covers, appreciating covers, and the metaphysics of covers and songs. Along the way, it explores a range of issues raised by covers, from the question of what precisely constitutes a cover, to the …Read more
  •  991
    Art Concept Pluralism Undermines the Definitional Project
    British Journal of Aesthetics 62 (1): 81-84. 2022.
    This discussion note addresses Caleb Hazelwood’s ‘Practice-Centered Pluralism and a Disjunctive Theory of Art’. Hazelwood advances a disjunctive definition of art on the basis of an analogy with species concept pluralism in the philosophy of biology. We recognize the analogy between species and art, we applaud attention to practice, and we are bullish on pluralism—but it is a mistake to take these as the basis for a disjunctive definition.
  •  1348
    The scope of inductive risk
    Metaphilosophy 53 (1): 17-24. 2022.
    The Argument from Inductive Risk (AIR) is taken to show that values are inevitably involved in making judgements or forming beliefs. After reviewing this conclusion, I pose cases which are prima facie counterexamples: the unreflective application of conventions, use of black-boxed instruments, reliance on opaque algorithms, and unskilled observation reports. These cases are counterexamples to the AIR posed in ethical terms as a matter of personal values. Nevertheless, it need not be understood i…Read more
  •  735
    How to be a Realist about Natural Kinds
    Disputatio 7 (8). 2018.
    Although some authors hold that natural kinds are necessarily relative to disciplinary domains, many authors presume that natural kinds must be absolute, categorical features of the reality —often assuming that without even mentioning the alternative. Recognizing both possibilities, one may ask whether the difference especially matters. I argue that it does. Looking at recent arguments about natural kind realism, I argue that we can best make sense of the realism question by thinking of natural …Read more
  •  236
    forall x: Dortmund is an adaptation and German translation of forall x: Calgary. As such, it is a full-featured textbook on formal logic. It covers key notions of logic such as consequence and validity, the syntax of truth-functional (propositional) logic and truth-table semantics, the syntax of first-order (predicate) logic with identity and first-order interpretations, formalizing German in TFL and FOL, and Fitch-style natural deduction proof systems for both TFL and FOL. It also deals with so…Read more
  •  4417
    Para Todxs: Natal - uma introdução à lógica formal
    with Tim Button, Robert Loftis, Robert Trueman, Aaron Thomas Bolduc, Richard Zach, Daniel Durante, Maria da Paz Nunes de Medeiros, Ricardo Gentil de Araújo Pereira, Tiago de Oliveira Magalhães, Hudson Benevides, Jordão Cardoso, Paulo Benício de Andrade Guimarães, and Valdeniz da Silva Cruz Junior
    PPGFIL-UFRN. 2022.
    Livro-texto de introdução à lógica, com (mais do que) pitadas de filosofia da lógica, produzido como uma versão revista e ampliada do livro Forallx: Calgary. Trata-se da versão de 13 de outubro de 2022. Comentários, críticas, correções e sugestões são muito bem-vindos.
  •  872
    Evidential nihilism
    Analysis 80 (4): 674-683. 2020.
    A considerable literature has grown up around the claim of Uniqueness, according to which evidence rationally determines belief. It is opposed to Permissivism, according to which evidence underdetermines belief. This paper highlights an overlooked third possibility, according to which there is no rational doxastic attitude. I call this 'Nihilism'. I argue that adherents of the other two positions ought to reject it but that it might, nevertheless, obtain at least sometimes.
  •  1777
    William James on Risk, Efficacy, and Evidentialism
    Episteme 19 (1): 146-158. 2022.
    William James’ argument against William Clifford in The Will to Believe is often understood in terms of doxastic efficacy, the power of belief to influence an outcome. Although that is one strand of James’ argument, there is another which is driven by ampliative risk. The second strand of James’ argument, when applied to scientific cases, is tantamount to what is now called the Argument from Inductive Risk. Either strand of James’ argument is sufficient to rebut Clifford's strong evidentialism a…Read more
  •  7850
    forall x: Calgary is a full-featured textbook on formal logic. It covers key notions of logic such as consequence and validity of arguments, the syntax of truth-functional propositional logic TFL and truth-table semantics, the syntax of first-order (predicate) logic FOL with identity (first-order interpretations), symbolizing English in TFL and FOL, and Fitch-style natural deduction proof systems for both TFL and FOL. It also deals with some advanced topics such as modal logic, soundness, and fu…Read more
  •  1496
    Science, Values, and the Priority of Evidence
    Logos and Episteme 9 (4): 413-431. 2018.
    It is now commonly held that values play a role in scientific judgment, but many arguments for that conclusion are limited. First, many arguments do not show that values are, strictly speaking, indispensable. The role of values could in principle be filled by a random or arbitrary decision. Second, many arguments concern scientific theories and concepts which have obvious practical consequences, thus suggesting or at least leaving open the possibility that abstruse sciences without such a connec…Read more
  •  658
    Sol LeWitt is probably most famous for wall drawings. They are an extension of work he had done in sculpture and on paper, in which a simple rule specifies permutations and variations of elements. With wall drawings, the rule is given for marks to be made on a wall. We should distinguish these algorithmic works from impossible-to-implement instruction works and works realized by following preparatory sketches. Taking the core feature of a wall drawing to be that it is algorithmic, some of LeWitt…Read more
  •  883
    Cautious realism and middle range ontology
    Metascience 27 (3): 365-370. 2018.
    Part of a book symposium on Anjan Chakravartty's Scientific ontology: integrating naturalized metaphysics and voluntarist epistemology (Oxford University Press, 2017)
  •  327
    This document collects discussion and commentary on issues raised in the workshop by its participants. Contributors are: Greg Frost-Arnold, David Harker, P. D. Magnus, John Manchak, John D. Norton, J. Brian Pitts, Kyle Stanford, Dana Tulodziecki
  •  1385
    Williamson on knowledge and psychological explanation
    Philosophical Studies 116 (1): 37-52. 2003.
    According to many philosophers, psychological explanation canlegitimately be given in terms of belief and desire, but not in termsof knowledge. To explain why someone does what they do (so the common wisdom holds) you can appeal to what they think or what they want, but not what they know. Timothy Williamson has recently argued against this view. Knowledge, Williamson insists, plays an essential role in ordinary psychological explanation.Williamson's argument works on two fronts.First, he argues…Read more
  •  1831
    What Kind of Is-Ought Gap is There and What Kind Ought There Be?
    with Jon Mandle
    Journal of Moral Philosophy 14 (4): 373-393. 2017.
    Some philosophers think that there is a gap between is and ought which necessarily makes normative enquiry a different kind of thing than empirical science. This position gains support from our ability to explicate our inferential practices in a way that makes it impermissible to move from descriptive premises to a normative conclusion. But we can also explicate them in a way that allows such moves. So there is no categorical answer as to whether there is or is not a gap. The question of an is-o…Read more