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“Objective Bayes” - A Dangerous DelusionAnthony O’HaganUniversity of Sheffield, United KingdomThe so-called “objective Bayes” movement justifies itself by arguments like this: Bayesian methodsare subjective and this is hindering the growth of Bayesian statistics, so let’s invent something called“objective Bayes”. I will argue instead that “objective Bayes” is dishonest and dangerous. My talk willincidentally answer questions like, What is objectivity? Just how objective is science? Just how objectiveare “objective Bayes” methods? If the “subjectivity” tag is a problem, what should we do about it?18

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