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Published online by Cambridge University Press: 01 April 2022
In his “Discussion” (1984), Elliott Sober offers some criticisms of the view about species—pluralistic realism—advocated in my 1984. Sober's comments divide into three parts. He attempts to show that species are not sets; he responds to my critique of David Hull's thesis that species are individuals; and he offers some arguments for the claim that species are “chunks of the genealogical nexus.” I consider each of these objections in turn, arguing that each of them fails. I attempt to use Sober's insightful critique to explain and defend pluralistic realism more fully.
I am grateful to David Lewis for some constructive criticisms.