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What Is It Like to Be an Ostrich?

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Part of the book series: Synthese Library ((SYLI,volume 397))

Abstract

In this chapter, I first present a very short history of contemporary Ostrich Nominalism. This short history is divided into two parts: the friends and foes of the Ostrich, i.e. some contemporary metaphysicians who have explicitly or implicitly assumed a negative or a positive attitude toward Ostrich-style thinking. I strongly suspect that some of the main insights of Ostrich Nominalism were also defended in the more distant past, in particular in medieval philosophy. But I will avoid any attempt to trace them back into this distant past due to the complexities of the history of philosophy. After this short historical outline, based on the views of friends and rivals, I will extract what constitutes the core of this position. Some initial differences between the old Ostrich and the new Priority Nominalism will also become clear at this point.

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Notes

  1. 1.

    ‘The logically primitive relation is the relation of an object falling under a concept: all relations between concepts can be reduced to it’ (my translation, Frege 1983: 128). Of course, one can dispute the claim that a logically primitive relation is automatically also a metaphysically primitive relation. However, I do not want to argue that Frege really was an ostrich realist, but only that this is a plausible position.

  2. 2.

    See Bergmann’s ‘Frege’s Hidden Nominalism’ (1958).

  3. 3.

    This alternative was proposed by Mellor and Oliver (1997). For a new defence of Ostrich Platonism see Calemi (2016).

  4. 4.

    Van Cleve (1994:583) offers a passage from Kant’s Critique of Pure Reason (trans. Norman Kemp Smith, A 186–87/B229/30) that suggests he was also a sort of ostrich: ‘The determinations of a substance, which are nothing but special ways in which it exists, are called accidents. If we ascribe a special existence to this reality in substance (for instance, to motion, as an accident of matter), this existence is entitled, in distinction from the existence of substance, which is entitled subsistence. But this occasions many misunderstandings; it is more exact and more correct to describe an accident as being simply the way in which the existence of a substance is positively determined.’

  5. 5.

    In his definition, R is supervenient on the natures of its terms = df. Necessarily, (x) (y)(x bears R to y only if there are non-relational properties F and G such that (i) x has F, (ii) y has G, and (iii) necessarily, (w)(z)(w has F and z has G only if w bears R to z).

  6. 6.

    See Donagan’s approach (1963).

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Imaguire, G. (2018). What Is It Like to Be an Ostrich?. In: Priority Nominalism. Synthese Library, vol 397. Springer, Cham. https://doi.org/10.1007/978-3-319-95004-4_2

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