The director Nurith Aviv discusses the little-known deaf culture, that of many sign languages, each of which is different and has its own grammar, its own syntax, complexity and richness.The director Nurith Aviv discusses the little-known deaf culture, that of many sign languages, each of which is different and has its own grammar, its own syntax, complexity and richness.The director Nurith Aviv discusses the little-known deaf culture, that of many sign languages, each of which is different and has its own grammar, its own syntax, complexity and richness.