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To: And Rosta <a.rosta@dtn.ntl.com>, "lojban@onelist.com" <lojban@egroups.com>
Subject: Re: [lojban] RE: zi'o & otpi
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From: John Cowan <jcowan@reutershealth.com>

And Rosta wrote:

> All the same, can one not have an actual dog breed that is instantiated by
> no actual dog?

I'm not sure. There are I think two plausible views of dog breeds: that they are
sets of dogs (in which case there *is* a dog breed with no actual dogs, but
only one of them -- the unique null dog breed), or that they are lineages
of dogs from a common ancestor (in which case there are no dogless dog breeds).

-- 

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