@Radical_EgoCom Humans are hypersocial *because* of our selfish genes, plus the mental "memetic" hack of imagined communities. (Graeber and some other David argue that imagined communities are not limited to nations and religions, and that they have been around for as long as behaviorally modern humans have.) You are correct that nepotism doesn't entail inequality. However, unequal *clans* + nepotism = reinforced inequality.
@DrDanMarshall
While human behavior can be influenced by both genetic and memetic factors, it's not accurate to attribute our social nature solely to "selfish genes" or "imagined communities." Human sociality is also shaped by historical and material conditions, including economic systems and power dynamics, which can either reinforce or mitigate inequality.