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  1. Hilary Greaves, Antiprioritarianism.
  2. Hilary Greaves, Are Anti-Particles Particles.
    ordinary electron, except it’s attracted to normal electrons – we say it has positive charge. For this reason it’s called a ‘positron’. The positron is a sister..
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  3. Hilary Greaves, In Search of Spacetime Structuralism.
    The debate between substantivalists and relationists about spacetime was given a new lease of life approximately twenty years ago, when John Earman and John Norton published an argument for the conclusion that, in the light of general relativity, substantivalism is untenable. Responses to Earman and Norton’s argument generated a proliferation of ‘substantivalisms’, and a debate between them that was, to the ears of at least some, distinctively metaphysical in character.
     
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  4. Hilary Greaves, Probability in Everettian Quantum Mechanics.
    (a) How to design a nuclear power plant 3. Deutsch/Wallace solution to the practical problem (a) Argue that the rational Everettian agent makes decisions by maximizing expected utility, where the expectation value is an average over branches 4. The semantics of branching - two options..
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  5. Hilary Greaves & Teruji Thomas (2014). On the CPT Theorem. Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 45:46-65.
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  6. Hilary Greaves (2013). Epistemic Decision Theory. Mind 122 (488):915-952.
    I explore the prospects for modelling epistemic rationality (in the probabilist setting) via an epistemic decision theory, in a consequentialist spirit. Previous work has focused on cases in which the truth-values of the propositions in which the agent is selecting credences do not depend, either causally or merely evidentially, on the agent’s choice of credences. Relaxing that restriction leads to a proliferation of puzzle cases and theories to deal with them, including epistemic analogues of evidential and causal decision theory, and (...)
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  7. Hilary Greaves (2011). In Search of (Spacetime) Structuralism. Philosophical Perspectives 25 (1):189-204.
  8. Hilary Greaves (2010). Towards a Geometrical Understanding of the CPT Theorem. British Journal for the Philosophy of Science 61 (1):27-50.
    The CPT theorem of quantum field theory states that any relativistic (Lorentz-invariant) quantum field theory must also be invariant under CPT, the composition of charge conjugation, parity reversal and time reversal. This paper sketches a puzzle that seems to arise when one puts the existence of this sort of theorem alongside a standard way of thinking about symmetries, according to which spacetime symmetries (at any rate) are associated with features of the spacetime structure. The puzzle is, roughly, that the existence (...)
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  9. Hilary Greaves & Wayne C. Myrvold (2010). Everett and Evidence. In Simon Saunders, Jonathan Barrett, Adrian Kent & David Wallace (eds.), Many Worlds? Everett, Quantum Theory, and Reality. Oxford University Press.
    Much of the evidence for quantum mechanics is statistical in nature. The Everett interpretation, if it is to be a candidate for serious consideration, must be capable of doing justice to reasoning on which statistical evidence in which observed relative frequencies that closely match calculated probabilities counts as evidence in favour of a theory from which the probabilities are calculated. Since, on the Everett interpretation, all outcomes with nonzero amplitude are actualized on different branches, it is not obvious that sense (...)
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  10. Frank Arntzenius & Hilary Greaves (2009). Time Reversal in Classical Electromagnetism. British Journal for the Philosophy of Science 60 (3):557-584.
    Richard Feynman has claimed that anti-particles are nothing but particles `propagating backwards in time'; that time reversing a particle state always turns it into the corresponding anti-particle state. According to standard quantum field theory textbooks this is not so: time reversal does not turn particles into anti-particles. Feynman's view is interesting because, in particular, it suggests a nonstandard, and possibly illuminating, interpretation of the CPT theorem. In this paper, we explore a classical analog of Feynman's view, in the context of (...)
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  11. Hilary Greaves (2009). Review of Georg Sparber, Unorthodox Humeanism. [REVIEW] Notre Dame Philosophical Reviews 2009 (9).
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  12. Hilary Greaves (2007). On the Everettian Epistemic Problem. Studies in History and Philosophy of Modern Physics 38 (1):120-152.
    Recent work in the Everett interpretation has suggested that the problem of probability can be solved by understanding probability in terms of rationality. However, there are *two* problems relating to probability in Everett --- one practical, the other epistemic --- and the rationality-based program *directly* addresses only the practical problem. One might therefore worry that the problem of probability is only `half solved' by this approach. This paper aims to dispel that worry: a solution to the epistemic problem follows from (...)
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  13. Hilary Greaves (2007). Probability in the Everett Interpretation. Philosophy Compass 2 (1):109–128.
    The Everett (many-worlds) interpretation of quantum mechanics faces a prima facie problem concerning quantum probabilities. Research in this area has been fast-paced over the last few years, following a controversial suggestion by David Deutsch that decision theory can solve the problem. This article provides a non-technical introduction to the decision-theoretic program, and a sketch of the current state of the debate.
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  14. Hilary Greaves & David Wallace (2006). Justifying Conditionalization: Conditionalization Maximizes Expected Epistemic Utility. Mind 115 (459):607-632.
    According to Bayesian epistemology, the epistemically rational agent updates her beliefs by conditionalization: that is, her posterior subjective probability after taking account of evidence X, pnew, is to be set equal to her prior conditional probability pold(·|X). Bayesians can be challenged to provide a justification for their claim that conditionalization is recommended by rationality—whence the normative force of the injunction to conditionalize? There are several existing justifications for conditionalization, but none directly addresses the idea that conditionalization will be epistemically rational (...)
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  15. Hilary Greaves (2004). Understanding Deutsch's Probability in a Deterministic Universe. Studies in History and Philosophy of Modern Physics 35 (3):423-456.
    Difficulties over probability have often been considered fatal to the Everett interpretation of quantum mechanics. Here I argue that the Everettian can have everything she needs from `probability' without recourse to indeterminism, ignorance, primitive identity over time or subjective uncertainty: all she needs is a particular *rationality principle*. The decision-theoretic approach recently developed by Deutsch and Wallace claims to provide just such a principle. But, according to Wallace, decision theory is itself applicable only if the correct attitude to a future (...)
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