On some fields doing somethingothers are not capable is an advantage, on others it's elitism. Language, communication, are more like the latter, communicarion

On some fields doing somethingothers are not capable is an advantage, on others it's elitism. Language, communication, are more like the latter, communicarion benefits from everyone using a common language, except when that niche sociolect is domain specific, which an emdash isn't.