• Michio Kaku, in a Diary of a CEO interview, retells his sergeant’s Vietnam story: a boy offered candy, then threw a hand grenade; half the sergeant’s body was hit by shrapnel.
• Kaku asks why a boy would do that and answers: because he believed the story he was given, enough to turn candy into a trap. His lesson: believe in the goodness of men and that men can do evil; fight for what you think is right.
• He recalls singing “I want to kill a Charlie Kong” at 4 a.m. every morning, then asking himself whether he was on the right side or the wrong side of the war.

• A chimp community can live peacefully for decades, and out of nowhere split into factions and kill former allies.
• The scary part is what triggers it: network breakdown, the loss of mediators, status rivalry, and territorial pressure.
• Ants are the extreme case. Organized violence can emerge from simple social rules when resources, territory, and group structure line up.

• Bajau (sea nomads) spleens are 50% larger than average, even in non-divers. Each dive, the spleen squeezes out oxygen-rich blood like a built-in tank.
• Turkana (desert survivors) kidneys evolved for extreme protein and minimal water. When they move to cities and eat “healthy” food, they get sick.
• Andeans in Argentina drink water with 20 times the safe arsenic level. A gene variant lets them detoxify the poison and stay healthy.
• Myopia genes spread in 25 years, not thousands. Screens and indoor life changed our eyes faster than any plague.

Culture and tech solve survival problems faster than genes can. We are becoming cells in a superorganism: individual fitness is offloaded to the group’s infrastructure.

This “shield” is optimal while the environment stays stable. But if the stack stumbles, biology has no time to catch up. No pressure!.