 Unlike central languages, these are "languages of conversation and narration rather than reading and writing, of memory and remembrance rather than record".They are used by native speakers within a particular area and are in danger of becoming extinct with increasing globalisation, which sees more and more speakers of peripheral languages acquiring more central languages in order to communicate with others.The next level constitutes about 100 central languages, spoken by 95% of the world's population and generally used in education, media and administration.