Not true. Adults are ABLE to learn rules, but they don&#x27;t NEED to learn them (there&#x27;s plenty of evidence of adult language immersion).<p>Also, doubt exists whether knowing some rules explicitly is of any help when trying to use language in a realtime timeframe. And there&#x27;s also continuous debate whether it&#x27;s even possible to &quot;transfer&quot; rules from explicit knowledge into an &quot;automatized&quot; linguistic skill.<p>Some researchers note that &quot;rules&quot; as presented on language classes have nothing to do with the inner representation of language, and are thus of no help. (Except when explicitly &quot;thinking&quot; about language.)