Abstract
Fondrakö is the local wisdom of the Nias ethnic community and has two functions. First are the oral religious holy book teaching ancestors' values and philosophy. Second is the highest consensus institution of the traditional society formulating and making decisions on the socio-religious law to guarantee the order of the community. This paper explains that social differentiation has happened in the modern era; philosophical values of fondrakö remain to live up to this day and experience the proliferation of rites. The argumentation built through this paper is that primitive culture will not simply disappear in the modern community just because it experiences accommodation and the decrease of emotional intensity into new forms. Social laws of primitive religion are not always contradictory and can run parallel with civilization.