College students are, on the overwhelming majority, fully grown and physically developed. While they are not fully mentally developed, I don't think you could

College students are, on the overwhelming majority, fully grown and physically developed. While they are not fully mentally developed, I don't think you could make the case that anybody below the age of death is incapable of further mental development. 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. https://en.wikipedia.org/wiki/Age_of_majority https://en.wikipedia.org/wiki/Age_of_majority Honestly, your edit seems to put the nail into the coffin of your entire point.