Species, Family, Harmony

The best available evidence suggests that all members of the human species have common ancestors.  It also suggests that the species first spread out globally from the site of its origin, and in recent centuries has been coalescing.  Thus, the species can be classified as a Family, and that this Family is governed by some principle or principles of organization, so that Family is the fundamental mode of human social organization.  On that basis, paticular families are all branches of the general Family, and a Polis is a modification of the fundamental principles of organization.  So, whether this Family is conceived as evolved from apes, or as postlapsarian, Harmony can be attributed to it without recourse to supernatural premises, and without a pre-established limitation of bestness.