Sorry Priscilla but that's no argument at all...The overriding factor from a purely safety point of view is that good communication is essential... it's up to the people in the industry to ensure that they are up to a required standard in this and other aspects of the job. Nobody is insisting that the proficiency in English should enable them to write a book... like waiters in a restaurant the requirement is very limited in the language ... most of the phrasing is repeated over and over again and easily understood...