According to Georges Dreyfus, the sectarian elements of the "Yellow Book" were not unusual and do not "justify or explain the Dalai Lama's strong reaction." Instead, he traces back the conflict more on the exclusive/inclusive approach and maintain that to understand the Dalai Lama's point of view one has to consider the complex ritual basis for the institution of the Dalai Lamas, which was developed by the Great Fifth and rests upon "an eclectic religious basis in which elements associated with the Nyingma tradition combine with an overall Gelug orientation." This involves the promotion and practices of the Nyingma school. Kay reminds us, "hen traditions come into conflict, religious and philosophical differences are often markers of disputes that are primarily economic, material and political in nature."