N. Effingham

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The Multiverse Thesis is a proposed solution to the Grandfather Paradox. It is popular and well promulgated, found in fiction, philosophy and (most importantly) physics. I first offer a short explanation on behalf of its advocates as to why it qualifies as a theory of time travel (as opposed to mere 'universe hopping'). Then I argue that the thesis(More)
Alan Baker (2005, 2009) has recently defended what he calls the " enhanced " version of the indispensability argument for mathematical Platonism. In this paper I demonstrate that the nominalist can respond to Baker's argument. First, I outline Baker's argument in more detail before providing a nominalistically acceptable paraphrase of prime-number talk.(More)
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