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13Erotetic Ignorance, Propositional Ignorance, and Questions of Significance. Reply to Christopher Willard‐KylePhilosophical Issues 35 (1): 195-198. 2026.In his reply to my book Ignorance: A Philosophical Study, Christopher Willard-Kyle zooms in on erotetic ignorance and the Significance Condition of my account of ignorance. Erotetic ignorance is lacking the answers to certain questions when the question is sound and when there is an answer to the question. Willard-Kyle shows that my arguments for the idea that erotetic ignorance reduces to propositional ignorance are wanting. In this response, I address each of his concerns about this claim and …Read more
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12Norms and Significance in Ignorance. Reply to Duncan PritchardPhilosophical Issues 35 (1): 190-194. 2026.This is a reply to Duncan Pritchard's response to my critique of his normative account of ignorance. Pritchard suggests that I take a Normative Condition on board in my own account of ignorance. Pritchard's suggestion has drastic revisionary and deflationary implications for how we use words like “ignorance” and “ignorant”. I explain why I believe this is unnecessary: one can perfectly well be ignorant without displaying any kind of intellectual fault. Pritchard does convincingly show, though, t…Read more
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16Norms and Significance in Ignorance. Reply to Duncan PritchardPhilosophical Issues 35 (1): 190-194. 2025.This is a reply to Duncan Pritchard's response to my critique of his normative account of ignorance. Pritchard suggests that I take a Normative Condition on board in my own account of ignorance. Pritchard's suggestion has drastic revisionary and deflationary implications for how we use words like “ignorance” and “ignorant”. I explain why I believe this is unnecessary: one can perfectly well be ignorant without displaying any kind of intellectual fault. Pritchard does convincingly show, though, t…Read more
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14Erotetic Ignorance, Propositional Ignorance, and Questions of Significance. Reply to Christopher Willard‐KylePhilosophical Issues 35 (1): 195-198. 2025.In his reply to my book Ignorance: A Philosophical Study, Christopher Willard‐Kyle zooms in on erotetic ignorance and the Significance Condition of my account of ignorance. Erotetic ignorance is lacking the answers to certain questions when the question is sound and when there is an answer to the question. Willard‐Kyle shows that my arguments for the idea that erotetic ignorance reduces to propositional ignorance are wanting. In this response, I address each of his concerns about this claim and …Read more
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8Can God Repent?In Jonathan Kvanvig (ed.), Oxford Studies in Philosophy of Religion, Volume 7, Oxford University Press Uk. pp. 190-212. 2016.Several passages in religious documents suggest that God sometimes repents. Few thinkers, however, have embraced the thought that God repents, mainly because it seems to conflict with being perfectly good and being omniscient. Two attempts to dissolve this conflict, open theism and Geachianism, are discussed. Finally, a different approach is proposed: even though God has full knowledge of the future free actions of his creatures, he does not have full knowledge of all his own future free actions…Read more
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483Polarisatie en de CapitoolbestormingAlgemeen Nederlands Tijdschrift voor Wijsbegeerte 116 (1): 4-23. 2024.Polarization and the Insurrection: The relation between identity and ideology in violent right-wing extremism The Capitol Hill Insurrection on January 6, 2021, in Washington has been, to many, a shocking and inconceivable event. On the face of it, far right ideologies, both in their extreme and radical varieties seem to play a crucial role here. Evidence from interviews with insurrectionists, however, suggests otherwise. Research on polarization in the United States and on radicalization into vi…Read more
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18Vice Explanations for Conspiracism, Fundamentalism, and ExtremismReview of Philosophy and Psychology 15 (3): 885-907. 2023.In the literature on conspiracism, fundamentalism, and extremism, we find so-called vice explanations for the extreme behavior and extreme beliefs that they involve. These are explanations in terms of people’s character traits, like arrogance, vengefulness, closed-mindedness, and dogmatism. However, such vice explanations face the so-called situationist challenge, which argues based on various experiments that either there are no vices or that they are not robust. Behavior and belief, so is the …Read more
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22Life without God: An Outsider's Look at AtheismCambridge University Press. 2023.In this book, Rik Peels explores atheism from a new perspective that aims to go beyond the highly polarized debate about arguments for and against God's existence. Since our beliefs about the most important things in life are not usually based on arguments, we should look beyond atheistic arguments and explore what truly motivates the atheist. Are there certain ideals or experiences that explain the turn to atheism? Could atheism be the default position for us, not requiring any arguments whatso…Read more
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5A philosophy of the humanitiesOxford University Press. 2025.This ground-breaking book opens up new vistas on the study of the humanities. Co-authored by three philosophers, it offers an in-depth exploration of a range of questions. For example, what, if anything, unifies scholarship in the humanities? Is it possible to attain objective truth in fields like history or literary studies or philosophy, or is everything a matter of perspective or standpoint? It is possible for fields in the humanities to make progress, and if so, how? And what should we make …Read more
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43Religion as Make-Believe: A Theory of Belief, Imagination, and Group Identity, written by Neil Van LeeuwenPhilosophia Reformata 89 (2): 278-282. 2024.
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38Raging Fire of Love: What I Learned from Jesus, the Jews, and the Prophet, written by Kelly James ClarkPhilosophia Reformata 90 (1): 79-82. 2024.
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67Vice Explanations for Conspiracism, Fundamentalism, and ExtremismReview of Philosophy and Psychology 15 (3). 2024.In the literature on conspiracism, fundamentalism, and extremism, we find so-called vice explanations for the extreme behavior and extreme beliefs that they involve. These are explanations in terms of people’s character traits, like arrogance, vengefulness, closed-mindedness, and dogmatism. However, such vice explanations face the so-called situationist challenge, which argues based on various experiments that either there are no vices or that they are not robust. Behavior and belief, so is the …Read more
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59Against Doxastic CompatibilismPhilosophy and Phenomenological Research 89 (3): 679-702. 2013.William Alston has argued that the so‐called deontological conception of epistemic justification, on which epistemic justification is to be spelled out in terms of blame, responsibility, and obligations, is untenable. The basic idea of the argument is that this conception is untenable because we lack voluntary control over our beliefs and, therefore, cannot have any obligations to hold certain beliefs. If this is convincing, however, the argument threatens the very idea of doxastic responsibilit…Read more
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366Why responsible belief is blameless beliefJournal of Philosophy 107 (5): 257-265. 2010.What, according to proponents of doxastic deontologism, is responsible belief? In this paper, we examine two proposals. Firstly, that responsible belief is blameless belief (a position we call DDB) and, secondly, that responsible belief is praiseworthy belief (a position we call DDP). We consider whether recent arguments in favor of DDP, mostly those recently offered by Brian Weatherson, stand up to scrutiny and argue that they do not. Given other considerations in favor of DDP, we conclude that…Read more
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132Normativity in studying conspiracy theory belief: Seven guidelinesPhilosophical Psychology 36 (6): 1125-1159. 2023.This paper aims to provide clear guidelines for researchers studying conspiracy theory belief. It examines the meta-linguistic question about how we should conceptualize 'conspiracy theory' and its relationship to the evaluative question of how we should evaluate beliefs in conspiracy theories, addressing normative issues surrounding the meaning, use, and conceptualization of ‘conspiracy theory’, as well as how these issues might impact how researchers study conspiracy theories or beliefs in the…Read more
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30Zekerheid, vertrouwen en de toekomstAlgemeen Nederlands Tijdschrift voor Wijsbegeerte 114 (4): 456-461. 2022.Amsterdam University Press is a leading publisher of academic books, journals and textbooks in the Humanities and Social Sciences. Our aim is to make current research available to scholars, students, innovators, and the general public. AUP stands for scholarly excellence, global presence, and engagement with the international academic community.
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Introduction : putting scientism on the philosophical agendaIn Jeroen de Ridder, Rik Peels & Rene van Woudenberg (eds.), Scientism: Prospects and Problems, Oxford University Press. 2018.
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15A conceptual map of scientismIn Jeroen de Ridder, Rik Peels & Rene van Woudenberg (eds.), Scientism: Prospects and Problems, Oxford University Press. pp. 28-56. 2018.This chapter provides a conceptual map of scientism: an overview of the varieties of scientism and their relations. It argues that a plausible understanding of scientism is the thesis that the boundaries of natural science should be expanded in order to include academic disciplines or realms of life that are widely considered not to belong to the realm of science. Every participant in the debate on scientism should make clear which variety of scientism she or he adheres to or criticizes by speci…Read more
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89Ignorance: a philosophical studyOxford University Press. 2023.a brief history of the study of ignorance. There is a lack of serious investigation into ignorance: apart from the apophatic tradition in the ancient world and the Middle Ages and the more recent fields of agnotology, philosophy of race, and feminist philosophy, ignorance itself has received little philosophical attention. It is then laid out how the field that one would expect to have studied ignorance in detail, namely, epistemology, has failed to do so. The chapter also explores why this coul…Read more
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67Proper Social and Epistemic Expectations In Speech Exchange: Reply to GoldbergJournal of Philosophical Research 47 237-242. 2022.I first list what I consider to be the main virtues of Goldberg’s novel and challenging account of epistemic pressure in speech exchange. I then zoom in on proper doxastic responses to assertions in conversations and argue that they comprise four things: (1) one believes the position that is testified to rather than just seeking, ensuring, trying, or aiming to believe the testifier on that proposition; (2) one believes the testifier; in other words, one wrongs the speaker not only if one disbeli…Read more
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48Corien Oranje, Cees Dekker, and Gijsbert van den Brink, Oer: Het grote verhaal van nul tot nuPhilosophia Reformata 86 (2): 245-247. 2021.
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80Sarah Coakley, ed., Spiritual Healing: Science, Meaning, and DiscernmentPhilosophia Reformata 87 (1): 101-104. 2022.
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50Andreas Kinneging, De onzichtbare Maat: Archeologie van goed en kwaadPhilosophia Reformata 87 (1): 71-74. 2022.
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44Scientism: Prospects and Problems (edited book)Oxford University Press. 2018.Can only science deliver genuine knowledge about the world and ourselves? Is science our only guide to what exists? Scientism answers both questions with yes. Scientism is increasingly influential in popular scientific literature and intellectual life in general, but philosophers have hitherto largely ignored it. This collection is one of the first to develop and assess scientism as a serious philosophical position. It features twelve new essays by both proponents and critics of scientism. Befor…Read more
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146The Metaphysics of DegreesEuropean Journal of Philosophy 26 (1): 46-65. 2018.Degree-sentences, i.e. sentences that seem to refer to things that allow of degrees, are widely used both inside and outside of philosophy, even though the metaphysics of degrees is much of an untrodden field. This paper aims to fill this lacuna by addressing the following four questions: [A] Is there some one thing, such that it is degree sensitive? [B] Are there things x, y, and z that stand in a certain relation to each other, viz. the relation that x has more y than z? [C] In those cases in …Read more
Amsterdam, North Holland, Netherlands
Areas of Specialization
| Epistemology |
| Philosophy of Religion |
| Normative Ethics |
Areas of Interest
| Epistemology |
| Philosophy of Religion |
| Meta-Ethics |