Information

A 300,000-Year-Old Species
Humans are young compared to species like sharks and horseshoe crabs, which survived millions of years — but what makes us unique is how we adapted:
cooperation, shared child-rearing, and small-group living.

How Humans Are Built
Almost genetically identical 0.5% DNA for adaptation to climate and terrain, but far more alike than different.
Women: wider peripheral vision, five hormonal systems, the only ones who physically birth humans.
Men: more muscle mass, focused long-range vision, one primary hormone (testosterone) that peaks in the morning.
Babies require extreme care, which forced adults to cooperate for survival.
80% of learning happens by age 3.
Full mental maturity arrives around age 25 — still with limited real-world experience.

Sociopaths (3–5% of the Population)
A small percentage lack empathy, guilt, and conscience.
They manipulate easily, seek power, and destabilize large systems.
In small groups, they are quickly identified and removed — one of the reasons Human Units cap at 150 members.

Hunter–Gatherer You
Imagine your natural role in an ancient group:
teaching, protecting, tracking, planning, healing, organizing, or problem-solving.
Your modern personality grew from those ancient strengths.

Hunter–Gatherer Me (Georgia’s Role)
I would not have hunted,
I would not have been able to be quiet enough, I would have observed, planned for danger, and kept the group functioning smoothly. I would send the teenagers to take care of the little ones and the tired mommas.

The Human Group Size Limit: 150
Based on Robin Dunbar’s research, humans function best in groups of 150.
Malcolm Gladwell calls this “The Law of 150.”
Larger groups collapse into hierarchy, conflict, and manipulation.
Small groups stay human, cooperative, and effective.