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Re: Linguistic and Biological Systematics

> Unfortunately, "language" and "species" also correlate in the number and
> frequent vagueness of their definitions and usages.

Has to do with the fact that both can be paraphyletic, IMHO.

> But language families
> (and subfamilies, etc.) do correspond pretty well to clades. It's kind of
> interesting that language classification has always been cladistic.

And has never known formal ranks! (Though this may be due more to lack of
knowledge. It is e. g. a pretty new idea that e. g. the Indo-European family
belongs into a larger one, whether this is Euro-Asiatic or Nostratic.)