classic wikipedia
this reads like early versions of the wikipedia Arrested Development page:
In linguistics, productivity is the degree to which native speakers use a particular grammatical process, especially in word formation. Since use to produce novel (new, non-established) structures is the clearest proof of usage of a grammatical process, the evidence most often appealed to as establishing productivity is the appearance of novel forms of the type the process leads one to expect, and many people would limit the definition offered above to exclude use of a grammatical process that does not result in a novel structure. […]
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