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Richard Johns [23]Richard Alexander Johns [1]
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  1. Probability and Symmetry.Paul Bartha & Richard Johns - 2001 - Philosophy of Science 68 (S3):S109-S122.
    The Principle of Indifference, which dictates that we ought to assign two outcomes equal probability in the absence of known reasons to do otherwise, is vulnerable to well-known objections. Nevertheless, the appeal of the principle, and of symmetry-based assignments of equal probability, persists. We show that, relative to a given class of symmetries satisfying certain properties, we are justified in calling certain outcomes equally probable, and more generally, in defining what we call relative probabilities. Relative probabilities are useful in providing (...)
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  2.  2
    Frontmatter.Richard Johns - 2002 - In A Theory of Physical Probability. University of Toronto Press.
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  3. An Epistemic Theory of Objective Chance.Richard Johns - manuscript
    A theory of objective, single-case chances is presented and defended. The theory states that the chance of an event E is its epistemic probability, given maximal knowledge of the possible causes of E. This theory is uniquely successful in entailing all the known properties of chance, but involves heavy metaphysical commitment. It requires an objective rationality that determines proper degrees of belief in some contexts.
     
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  4. A Theory of Physical Probability.Richard Johns (ed.) - 2002 - University of Toronto Press.
  5.  3
    Bibliography.Richard Johns - 2002 - In A Theory of Physical Probability. University of Toronto Press. pp. 245-252.
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  6.  2
    Contents.Richard Johns - 2002 - In A Theory of Physical Probability. University of Toronto Press.
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  7.  2
    6. Correlation.Richard Johns - 2002 - In A Theory of Physical Probability. University of Toronto Press. pp. 148-187.
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    8. Conclusion.Richard Johns - 2002 - In A Theory of Physical Probability. University of Toronto Press. pp. 233-234.
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  9.  13
    3. Causation and Determination.Richard Johns - 2002 - In A Theory of Physical Probability. University of Toronto Press. pp. 53-83.
  10.  3
    5. Classical Stochastic Mechanics.Richard Johns - 2002 - In A Theory of Physical Probability. University of Toronto Press. pp. 109-147.
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  11. Dynamical Complexity and Regularity.Richard Johns - manuscript
    The aim of this paper is to provide a mathematical basis for the plausible idea that regular dynamical laws can only produce (quickly and reliably) regular structures. Thus the actual laws, which are regular, can only produce regular objects, like crystals, and not irregular ones, like living organisms.
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  12.  19
    Epistemic Theories of Objective Chance.Richard Johns - 2020 - Synthese 197 (2):703-730.
    Epistemic theories of objective chance hold that chances are idealised epistemic probabilities of some sort. After giving a brief history of this approach to objective chance, I argue for a particular version of this view, that the chance of an event E is its epistemic probability, given maximal knowledge of the possible causes of E. The main argument for this view is the demonstration that it entails all of the commonly-accepted properties of chance. For example, this analysis entails that chances (...)
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  13.  3
    1. Introduction.Richard Johns - 2002 - In A Theory of Physical Probability. University of Toronto Press. pp. 1-8.
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  14.  3
    Index.Richard Johns - 2002 - In A Theory of Physical Probability. University of Toronto Press. pp. 253-259.
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  15.  3
    2. Logic and Probability.Richard Johns - 2002 - In A Theory of Physical Probability. University of Toronto Press. pp. 9-52.
  16.  2
    Notes.Richard Johns - 2002 - In A Theory of Physical Probability. University of Toronto Press. pp. 235-244.
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  17.  16
    4. Physical Chance.Richard Johns - 2002 - In A Theory of Physical Probability. University of Toronto Press. pp. 84-108.
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  18.  57
    Self-Organisation in Dynamical Systems: A Limiting Result.Richard Johns - 2011 - Synthese 181 (2):255 - 275.
    There is presently considerable interest in the phenomenon of "self-organisation" in dynamical systems. The rough idea of self-organisation is that a structure appears "by itself in a dynamical system, with reasonably high probability, in a reasonably short time, with no help from a special initial state, or interaction with an external system. What is often missed, however, is that the standard evolutionary account of the origin of multi-cellular life fits this definition, so that higher living organisms are also products of (...)
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  19. Subjective Logic: Logic as Rational Belief Dynamics.Richard Johns - manuscript
    What I’m calling “Subjective Logic” is a new approach to logic. Fundamentally it is a theory about what sentences mean, i.e. a theory of the proposition, but it includes an account of logical consequence, the propositional connectives, probability, and the nature of truth.
     
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  20. Spontaneous Self-Organisation: A Limiting Result.Richard Johns - unknown
    The term “spontaneous self-organisation” (SSO for short) is used to describe the emergence of an object or structure “by itself” within a dynamical system. While usage of the term will no doubt vary somewhat, in this paper I will take it to have three key features: 1. The appearance of the object does not require a special, “fine-tuned” initial state. 2. There is no need for interaction with an external system. 3. The object is likely to appear in a reasonably (...)
     
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  21. The Problem with Complete States: Freedom, Chance and the Luck Argument.Richard Johns - unknown
    The Luck Argument seems to show that libertarianism is false, since indeterministic free will is impossible. We should be wary of this argument, however, since a very similar argument shows that indeterministic causation1 is impossible. Further, since chancy events require causes, but are not determined, it would also follow that chancy events do not exist. If we are to conclude that free actions are all deterministic (or nonexistent), then the same reasoning should also persuade us that events with physical chances (...)
     
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  22.  5
    7. The State Vector.Richard Johns - 2002 - In A Theory of Physical Probability. University of Toronto Press. pp. 188-232.
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  23.  22
    Why Physicalism Seems to Be (and Is) Incompatible with Intentionality.Richard Johns - 2020 - Acta Analytica 35 (4):493-505.
    There is a long history of philosophical intuition that the human mind must be more than physical or mechanical. I argue that this intuition arises from the perfect “transparency” of physical and mechanical states, in the sense that such states have no obscure or occult elements, but are fully intelligible in mathematical terms. In the paper, I derive a contradiction from the claim that such a physical system has genuine intentionality, comparable with an intelligent human. The contradiction arises from the (...)
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