Time’s arrow reversed? The (a)symmetry of language change

This paper analyses language users’ participation in real-time grammatical change. The question addressed is the extent to which individuals continue using both the incoming form and the recessive, outgoing form as opposed to using one of them categorically. Variable grammars are related to the sociolinguistic discussion of whether language change is a generational or a communal process. Ultimately, they also raise the question of the predictability of real-time language change