And Rosta wrote:
>
> As far as I can see, Pinker with his claim that -s is the default ought
> to have to address the same question of learnability: why is it -s
> that's taken to be the default. Probably because of the evidence
> of names and borrowings, he would say, I suppose.
If I recall correctly, this is right: Pinker takes the evidence
concerning names and borrowings to be the main sign of productivity,
and thus an indication of the default.
Joe
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