Because they are defending the view that all of UG is inborn, Chomskyans must be credited with holding that the primary data are impoverished quite generally. That is, if the innateness of UG tout court is to be supported by poverty of the stimulus considerations, the idea must be that the cases that nativists discuss in detail (polar interrogatives, complex auxiliaries, etc.) are but the tip of the unlearnable iceberg. Nativists quite reasonably do not attempt to defend this claim by end