Philosophical Quarterly 64 (254):60-81 (2014)

Makmiller Pedroso
Towson University
Kripke argues for origin essentialism, the view that the same individual cannot have multiple origins. Sober hypothesises that Kripke's origin essentialism applies to biological species. This paper shows that Sober's hypothesis fails. Because Kripke's original argument is invalid, it cannot vindicate Sober's proposal. Salmon offers an influential reformulation of Kripke's argument but his argument fails to extend to species: the notion of an individual's origin is too narrow to apply to species, and Salmon's argument rests on a thought experiment that conflicts with how species evolve. Thus, Sober and others are wrong to think that Kripke's origin essentialism can save species essentialism.
Keywords origin essentialism  biological essentialism  species  speciation  individuals  natural kinds
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DOI 10.1093/pq/pqt011
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References found in this work BETA

A Matter of Individuality.David L. Hull - 1978 - Philosophy of Science 45 (3):335-360.
Evolution, Population Thinking, and Essentialism.Elliott Sober - 1980 - Philosophy of Science 47 (3):350-383.
Is Semantics Possible?Hilary Putnam - 1970 - Metaphilosophy 1 (3):187–201.

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Citations of this work BETA

Species.Marc Ereshefsky - 2010 - Stanford Encyclopedia of Philosophy.
Biological Taxon Names Are Descriptive Names.Jerzy A. Brzozowski - 2020 - History and Philosophy of the Life Sciences 42 (3):1-25.

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