Compare nativist theories of language acquisition (such as Chomsky's universal grammar) with empiricist approaches (such as connectionist models and usage-based theories). How does each theoretical framework explain the poverty of the stimulus argument? Discuss the critical period hypothesis and evidence from cases of feral children and second language acquisition. Consider the role of social interaction and statistical learning in language development. Evaluate which theoretical approach best accounts for the uniformity of language acquisition across cultures despite input variation.