• . 2013.
  •  38
    Fichte and the Possibility of Time Travel
    Philosophy Today 49 (3): 302-308. 2005.
  •  6
    Towards a physical theory of the now
    Logique Et Analyse 48 (192): 261-277. 2005.
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    Murray MacBeath, in his essay ``Time's Square'', describes a fictitious scenariowhere various physical observations made by the participants would, he claims, invitethe interpretation that time for them is two-dimensional. In the present paper, however, Iargue that such observations come close to underdetermining the hypothesis of time's twodimensionality;for a rival hypothesis - that, under certain circumstances, the observationscan be explained in terms of the familiar time dilation effects pr…Read more
  •  39
    Cartesian Dualism, and Universe as Turing Machine
    Philosophy Today 47 (2): 138-146. 2003.
    In the field of computability and algorithmicity, there have recently been two essays that are of great interest: Peter Slezak's "Descartes's Diagonal Deduction," and David Deutsch's "Quantum Theory, the Church-Turing Principle and the Universal Quantum Computer." In brief, the former shows that Descartes' Cogito argument is structurally similar to Godel's proof that there are statements true but cannot be proven within a formal system such as Principia Mathematica, while Deutsch provides strong…Read more
  •  55
    Methodological Solipsism and the Multiverse
    Philosophy Today 48 (3): 255-263. 2004.
    "Methodological Solipsism and the Multiverse" defends the many-universes interpretation of quantum physics, but draws attention to a major philosophical obstacle to the interpretation's acceptance: the question of why, if there are many universes, all on a par with one another, at a particular time the 'I' is manifest in only one. This is known as the 'preferred basis' problem. The so-called methodological solipsism approach, introduced by Driesch and employed by philosophers, such as Putnam and…Read more