According to the Sapir-Whorf hypothesis, the fact that Piraha speakers have a very limited system of numerals means that ... O gender is an important factor in the social organization of the Piraha tribe. O the Piraha language is inferior to languages with more extensive systems of numerals, such as English. O Piraha is not yet a fully developed language Piraha speakers see the world differently from the speakers of languages with more extensive systems of numerals.