On the other hand, Kana Mitra argues that traditional codes of conduct in the Hindu tradition are on their face contrary to human rights. Manu's Dharma Sutra, which is considered authoritative in this regard, relates all rights to duties specified by caste, age, and sex. Traditional rights then are privileges of status and position. However, for twenty-five hundred years there have been rebellions within the Hindu tradition against its hierarchical order, and today many Hindus believe Manu's code needs revision.