social structure

technological revolution

politics

actual ruling

class

state

= social brain

imagination

= theory of mind

rule

= rational brain

accountability

= empirical brain

band

realistic egalitarianism

people

√

linked band

Upper Paleolithic

imaginative egalitarianism politics

people

√

√

tribe

Agricultural-Bronze

decentralized hierarchical tribalism politics

tribal chiefs

√

√

mega empire

Iron

centralized top-down thinking politics

top-down thinkers and upper-class people

√

√

√

√

modern nation

Industrial

multilateral bottom-up thinking politics

bottom-up thinkers and all people

√

√

√

√

competitive worldview

liberal democracy based on liberty

√

√

rule of law

accountability of election

cooperative worldview

well-off democracy (well-off socialism) based on wellbeing

√

√

rule of relation

accountability of professional qualification