College students are, on the <i>overwhelming</i> majority, fully grown and physically developed.  While they are not fully mentally developed, I don&#x27;t think you could make the case that anybody below the age of <i>death</i> is incapable of further mental development.<p>The article on age of majority makes it clear that it is a distinct concept from age of license, which can cover things like buying alcohol and running for elected office.
<a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Age_of_majority" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Age_of_majority</a><p>Honestly, your edit seems to put the nail into the coffin of your entire point.