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Leonardo asked:

What came first in human species: language or the capacity to classify (categories)?

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I would go for the latter. I think animals must have some such capacity. It is the development of the
ability to classify conceptuallythat leads to language, in my view. Now the question becomes a much
harder one: What came first in human species: language or the capacity to conceptualise? I don't
know the answer to that one.

Tim Sprod