•  439
    We Owe It to Others to Think for Ourselves
    In Jonathan Matheson & Kirk Lougheed (eds.), Epistemic Autonomy, Routledge. 2021.
    We are often urged to figure things out for ourselves rather than to rely on other people’s say-so, and thus be ‘epistemically autonomous’ in one sense of the term. But why? For almost any important question, there will be someone around you who is at least as well placed to answer it correctly. So why bother making up your own mind at all? I consider, and then reject, two ‘egoistic’ answers to this question according to which thinking for oneself is beneficial for the autonomous agent herself. …Read more
  •  428
    Scientific Progress Without Justification
    In Kareem Khalifa, Insa Lawler & Elay Shech (eds.), Scientific Understanding and Representation: Modeling in the Physical Sciences, Routledge. forthcoming.
    According to some prominent accounts of scientific progress, e.g. Bird’s epistemic account, accepting new theories is progressive only if the theories are justified in the sense required for knowledge. This paper argues that epistemic justification requirements of this sort should be rejected because they misclassify many paradigmatic instances of scientific progress as non-progressive. In particular, scientific progress would be implausibly rare in cases where (a) scientists are aware that most…Read more
  •  421
    Book review of Paul Horwich, Probability and Evidence (Cambridge Philosophy Classics edition), Cambridge: Cambridge University Press, 2016, 147pp, £14.99 (paperback).
  •  417
    Roughly, the noetic account characterizes scientific progress in terms of increased understanding. This chapter outlines a version of the noetic account according to which scientific progress on some phenomenon consists in making scientific information publicly available so as to enable relevant members of society to increase their understanding of that phenomenon. This version of the noetic account is briefly compared with four rival accounts of scientific progress, viz. the truthlikeness account…Read more
  •  409
    An Epistemic Advantage of Accommodation over Prediction
    Philosophers' Imprint. forthcoming.
    Many philosophers have argued that a hypothesis is better confirmed by some data if the hypothesis was not specifically designed to fit the data. ‘Prediction’, they argue, is superior to ‘accommodation’. Others deny that there is any epistemic advantage to prediction, and conclude that prediction and accommodation are epistemically on a par. This paper argues that there is a respect in which accommodation is superior to prediction. Specifically, the information that the data was accommodated rat…Read more
  •  404
    The Epistemic Significance of Disagreement (review)
    Philosophical Quarterly 67 (269): 866-868. 2017.
    Suppose you and I are equally well informed on some factual issue and equally competent in forming beliefs on the basis of the information we possess. Having evaluated this information, each of us independently forms a belief on the issue. However, since neither of us is infallible, we may end up with contrary beliefs. How should I react if I discover that we disagree in this way? According to conciliatory views in the epistemology of disagreement, I should modify my original opinion by moving c…Read more
  •  376
    Excessive testimony: When less is more
    Philosophy and Phenomenological Research 107 (2): 525-540. 2023.
    This paper identifies two distinct dimensions of what might be called testimonial strength: first, in the case of testimony from more than one speaker, testimony can be said to be stronger to the extent that a greater proportion of the speakers give identical testimony; second, in both single-speaker and multi-speaker testimony, testimony can be said to the stronger to the extent that each speaker expresses greater conviction in the relevant proposition. These two notions of testimonial strength…Read more
  •  376
    Scientific Progress: By-Whom or For-Whom?
    Studies in History and Philosophy of Science Part A 97 (C): 20-28. 2022.
    When science makes cognitive progress, who or what is it that improves in the requisite way? According to a widespread and unchallenged assumption, it is the cognitive attitudes of scientists themselves, i.e. the agents by whom scientific progress is made, that improve during progressive episodes. This paper argues against this assumption and explores a different approach. Scientific progress should be defined in terms of potential improvements to the cognitive attitudes of those for whom progre…Read more
  •  284
    In the course of developing an account of scientific progress, C. D. McCoy (2022) appeals centrally to understanding as well as to problem-solving. On the face of it, McCoy’s account could thus be described as a kind of hybrid of the understanding-based account that I favor (Dellsén 2016, 2021) and the functional (a.k.a. problem-solving) account developed most prominently by Laudan (1977; see also Kuhn 1970; Shan 2019). In this commentary, I offer two possible interpretations of McCoy’s account …Read more
  •  279
    Tvö viðhorf til vísindalegrar þekkingar -- eða eitt?
    Ritið -- Tímarit Hugvísindastofnunar 15 (1): 135-155. 2015.
    There are two main approaches to the epistemology of science. On the one hand, some hold that a scientific hypothesis is confirmed to the extent that the hypothesis explains the evidence better than alternative hypotheses concerning the same subject-matter. This idea is often referred to as Inference to the Best Explanation. On the other hand, some hold that a scientific hypothesis is confirmed to the extent that the hypothesis is probable given the evidence. This idea is often associated with B…Read more
  •  246
    Manifestationalism holds that science aims only to give us theories that are correct about what has been observed thus far. Several philosophers, including Bas van Fraassen, have argued that manifestationalism cannot make sense of the scientific impetus to make new observations, since such observations only risk turning manifestationally adequate theories into inadequate ones. This paper argues that a strikingly similar objection applies to van Fraassen’s own constructive empiricism, the view th…Read more
  •  222
    Interthematic Polarization
    American Philosophical Quarterly 61 (1): 45-58. 2024.
    In recent epistemology, belief polarization is generally defined as a process by which a disagreement on a single proposition becomes more extreme over time. Outside of the philosophical literature, however, ‘polarization’ is often used for a different epistemic phenomenon, namely the process by which people’s beliefs on unrelated topics become increasingly correlated over time. This paper argues that the latter type of polarization, here labeled interthematic polarization, is often rational fro…Read more
  •  203
    Probabilifying reflective equilibrium
    Synthese 203 (2): 1-24. 2024.
    This paper aims to flesh out the celebrated notion of reflective equilibrium within a probabilistic framework for epistemic rationality. On the account developed here, an agent's attitudes are in reflective equilibrium when there is a certain sort of harmony between the agent's credences, on the one hand, and what the agent accepts, on the other hand. Somewhat more precisely, reflective equilibrium is taken to consist in the agent accepting, or being prepared to accept, all and only claims that …Read more
  •  201
    English summary: This paper engages with a tradition in Icelandic philosophy of theorizing about critical thinking. The central thesis of the paper is that critical thinking should not be identified with scientific thinking, since scientific research is often (and inevitably so) based on a kind of epistemic trust in other scientists' testimony that is incompatible with critical thinking. The paper also criticizes the idea that critical thinking should be associated with any of Charles Peirce's …Read more
  •  173
    English summary: This paper uses research on the COVID-19 pandemic as the backdrop for an accessible discussion of the value and status of science, and of the role of valuesin science. In particular, the paper seeks to debunk three common myths or dogmas about scientific research: (i) that there is such a thing as 'scientific proof' of a theory or hypothesis, (ii) that disagreement is necessarily unhealthy or unnatural in science, (iii) and that personal values play no role in scientific researc…Read more
  •  170
    English abstract: Feminist philosophers of science have argued that various biases can and do influence the results of scientific investigations. Two kinds of arguments have been most influential: On the one hand, it has been argued that biased assumptions frequently bridge the gap between observation and theory associated with ‘the underdetermination thesis’. On the other hand, it has been argued that biased value judgments determine when the evidence in favor of a particular theory is consider…Read more
  •  159
    English abstract: This paper discusses the delicate relationship between traditional epistemology and the increasingly influential probabilistic (or ‘Bayesian’) approach to epistemology. The paper introduces some of the key ideas of probabilistic epistemology, including credences or degrees of belief, Bayes’ theorem, conditionalization, and the Dutch Book argument. The tension between traditional and probabilistic epistemology is brought out by considering the lottery and preface paradoxes as th…Read more
  •  157
    English abstract: In order for experts to serve as authorities in our society, people need to trust them when they make claims that fall within their domains of expertise. However, it also seems important for people to think independently and critically about the experts‘ conclusions – one shouldn‘t believe everything one is told. In this paper, I examine this tension with the aim of answering four closely related questions: (1) What is it to trust experts? (2) Why do we often have to rely on ex…Read more