The previous objections to the Unlearning Problem Argument made the points, first, that negative evidence does exist in the pld (in the form of regularities both in others' language use and in how others react to children's own productions), and second, that children (and other animals) seem very good at exploiting this kind of information for the purposes of learning about their world. This would seem to be rather a good thing, given that there is reason to think that learners must be ab