Universalism and junk
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Those who accept the necessity of mereological universalism face what has come to be known as the junk argument due to Bohn , which proceeds from (i) the incompatibility of junk with universalism and (ii) the possibility of junk, to conclude that mereological universalism isn't metaphysically necessary. Most attention has focused on (ii); however, recent authors have cast doubt on (i). This paper undertakes a defence of premise (i) against three main objections. The first is a new objection to the effect that Bohn's defence of that premise presupposes far too much. I show that one can defend premise (i) from a much weaker set of assumptions. The second objection, due to Contessa , is that those who accept unrestricted composition should only accept the existence of binary sums (which are compatible with junk) rather than infinitary fusions. I argue that this conception of unrestricted composition is problematic: it is in conflict with an intuitive remainder principle. The final objection is due to Spencer . His view is that there is no absolutely unrestricted plural universal quantifier; so any statement of the unrestricted fusion axiom will simply not rule out the existence of junky worlds. I argue that the failure of unrestricted quantification will not be enough by itself to establish the existence of junk. Furthermore, it is not clear whether this view counts as a form of mereological universalism. As a result, I suggest that if one wants to reject the junk argument, premise (ii) is the only viable option.
Cotnoir , A J 2014 , ' Universalism and junk ' Australasian Journal of Philosophy , vol 92 , no. 4 , pp. 649-664 . DOI: 10.1080/00048402.2014.924540
Australasian Journal of Philosophy
Copyright 2014 Australasian Association of Philosophy. This is an Accepted Manuscript of an article published by Taylor & Francis in Australasian Association of Philosophy on 12/6/2014, available online: http://wwww.tandfonline.com/10.1080/00048402.2014.924540
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