Tim is the author of a book called The Atlas of Endangered Alphabets. If something is important, we write it down. Yet 85% of the world's writing systems are on the verge of vanishing - not granted official status, not taught in schools, discouraged and dismissed. When a culture is forced to abandon its traditional script, everything it has written for hundreds of years - sacred texts, poems, personal correspondence, legal documents, the collective experience, wisdom and identity of a people - is lost.