Defined by Joel Robbins as the science of continuity, anthropology has long experienced difficulty explaining changes and transformations. The notions of cultures and traditions it maintains tend to simply assume their durability. This inclination has led to the problem of overlooking the dramatic heterogeneity in bodies of myths. Since myth is often treated as the ‘great component’ that promotes ‘the unity of a culture’, even among those who are critical of the timeless notion of culture, the theoretical tendency that pervades anthropology is to emphasise its coherence with the whole while disregarding its conflicting multiplicity. This paper attempts to propose a framework within which we can better address the multifariousness of a body of myths in actual social circumstances. This is accomplished by expanding Edmund Leach’s view of myth as an ‘argument’ and taking the view that the reproduction of myth requires its alteration and transformation for the sake of appropriating conceptualised qualities of social value. The subject of this study, in particular, is the myth about the Butonese lowlander in North Seram, Maluku, Eastern Indonesia.