If I understand correctly, the crux is this graph? https://www.ncbi.nlm.nih.gov/core/lw/2.0/html/tileshop_pmc/tileshop_pmc_inline.html?title=Click%20on%20image

If I understand correctly, the crux is this graph? https://www.ncbi.nlm.nih.gov/core/lw/2.0/html/tileshop_pmc/tileshop_pmc_inline.html?title=Click%20on%20image%20to%20zoom&p=PMC3&id=4381518_459f02.jpg https://www.ncbi.nlm.nih.gov/core/lw/2.0/html/tileshop_pmc/t... Showing total # of male ancestors (left) and female (right) I guess writing, agriculture, and fixed settlements allowed for dominance on a far greater scale. There's a natural limit to how much power you can project without technology.