Social systems persist through continuity just as biological systems do.
In biology, continuity is maintained through viability-oriented organisation that preserves the persistence of living systems across time despite ongoing material change. In social life, continuity is maintained through the reproduction, transmission, repair, and transformation of shared patterns of coordination.
Norms, institutions, languages, technologies, traditions, and cultural practices allow forms of collective organisation to outlast the individuals who participate in them. New members enter already-existing systems of meaning and coordination, while established members continually reproduce and modify those systems through their actions.
Social continuity is therefore neither simple repetition nor rigid stability. Social systems persist because they are capable of maintaining organised patterns of coordination while adapting to changing circumstances.
From an APS perspective, social organisation represents a higher-order continuity architecture built upon biological continuity. Human societies persist not because their components remain unchanged, but because coordinated forms of life are continually reconstructed across generations.