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  1. New Theory About Old Evidence. A Framework for Open-Minded Bayesianism.Sylvia9 Wenmackers & Jan-Willem Romeijn - 2016 - Synthese 193 (4).
    We present a conservative extension of a Bayesian account of confirmation that can deal with the problem of old evidence and new theories. So-called open-minded Bayesianism challenges the assumption—implicit in standard Bayesianism—that the correct empirical hypothesis is among the ones currently under consideration. It requires the inclusion of a catch-all hypothesis, which is characterized by means of sets of probability assignments. Upon the introduction of a new theory, the former catch-all is decomposed into a new empirical hypothesis and a new (...)
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    Measuring Graded Membership: The Case of Color.Igor Douven, Sylvia9 Wenmackers, Yasmina Jraissati & Lieven Decock - 2017 - Cognitive Science 41 (3):686-722.
    This paper considers Kamp and Partee's account of graded membership within a conceptual spaces framework and puts the account to the test in the domain of colors. Three experiments are reported that are meant to determine, on the one hand, the regions in color space where the typical instances of blue and green are located and, on the other hand, the degrees of blueness/greenness of various shades in the blue–green region as judged by human observers. From the locations of the (...)
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    The Snow White Problem.Sylvia9 Wenmackers - forthcoming - Synthese.
    The SnowWhite problem is introduced to demonstrate how learning something of which one could not have learnt the opposite can change an agent’s probability assignment. This helps us to analyse the Sleeping Beauty problem, which is deconstructed as a combinatorial engine and a subjective wrapper. The combinatorial engine of the problem is analogous to Bertrand’s boxes paradox and can be solved with standard probability theory. The subjective wrapper is clarified using the Snow White problem. Sample spaces for all three problems (...)
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    Knowledge and Approximate Knowledge.Lieven Decock, Igor Douven, Christoph9 Kelp & Sylvia9 Wenmackers - 2014 - Erkenntnis 79 (S6):1129-1150.
    Traditionally, epistemologists have held that only truth-related factors matter in the question of whether a subject can be said to know a proposition. Various philosophers have recently departed from this doctrine by claiming that the answer to this question also depends on practical concerns. They take this move to be warranted by the fact that people’s knowledge attributions appear sensitive to contextual variation, in particular variation due to differing stakes. This paper proposes an alternative explanation of the aforementioned fact, one (...)
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    Children of the Cosmos. Presenting a Toy Model of Science with a Supporting Cast of Infinitesimals.Sylvia9 Wenmackers - 2016 - In Anthony Aguirre, Brendan Foster & Zeeya Merali (eds.), Trick or Truth? The Mysterious Connection Between Physics and Mathematics.
    Mathematics may seem unreasonably effective in the natural sciences, in particular in physics. In this essay, I argue that this judgment can be attributed, at least in part, to selection effects. In support of this central claim, I offer four elements. The first element is that we are creatures that evolved within this Universe, and that our pattern finding abilities are selected by this very environment. The second element is that our mathematics—although not fully constrained by the natural world—is strongly (...)
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