" We also have to bear in mind that our own sense of what is plausible and implausible is severely limited by the fact that the modern world is dominated by an extremely narrow range of family arrangements. Looking in anthropology books on kinship and marriage is like opening a book on a huge variety of dead and dying languages, all victims of the inexorable homogenisation of the world that has been in progress since the dawn of civilisation. "

― Patricia Crone , The Nativist Prophets of Early Islamic Iran: Rural Revolt and Local Zoroastrianism