The Worst Mistake in the History of the Human Race — Notes

Thesis

Jared Diamond argues agriculture was the worst mistake in human history: it introduced social inequality, disease, and despotism, and often reduced overall well‑being despite higher population density.

Height decline after the adoption of agriculture: before agriculture, heights were higher; after, average heights dropped and recovery was slow.
Dickson Mounds (Maize farming around AD 1150): enamel defects ↑ ~50%, iron‑deficiency anemia ↑ ~4×, bone lesions ↑ ~3×, spine degeneration ↑, life expectancy at birth ↓ from ~26 to ~19 years.
Other lines of evidence: well‑preserved mummies in Chilean deserts; preserved feces in Nevada caves show parasites; skeletal data allow mortality tables and growth assessments.

Hunter‑gatherers: varied diet with higher protein and nutrients; many wild plants (≈ 75+ species) and diverse foods.
Farmers: reliance on a few high‑carbohydrate crops (e.g., wheat, rice, corn); cheap calories but poorer nutrition and less dietary balance;
Risk: crops failed lead to famine; crowding promotes disease spread.

Agriculture enabled crowding and long‑distance trade, which facilitated epidemics (measles, bubonic plague) once large cities formed.
Early hunter‑gatherer bands were more dispersed, limiting disease spread compared to agricultural settlements.

Agriculture allowed a non‑producing elite to accumulate resources, creating structured inequality.
Royals and elites tended to be healthier or taller than commoners in several ancient populations; mummies and burial data show disparities in nutrition and disease.
Women in farming societies bore heavier labor and had more pregnancies, contributing to health burdens; example of weight carried by women in some communities.

Diamond rejects the claim that agriculture freed up leisure time for art; hunter‑gatherers produced art and had substantial leisure time long before agriculture; later technologies expanded art forms but were not the sole source of leisure.

Population dynamics: farming supports more mouths but at a lower per‑person quality of life.
Competition: higher densities allowed farming bands to outcompete hunter‑gatherers, often by force; some groups were driven out or absorbed.
Three major health‑related costs accompany farming: limited diet diversity, risk of crop failure, and crowding that spreads disease.

Hunter‑gatherer lifeways were, in many respects, healthier and more sustainable in the long run.
The shift to agriculture created a new social order with higher population density but worse average health for many individuals.
Archaeology provides a crucial lens on how a key decision in the distant past shaped human health and society.

24‑hour clock metaphor: humanity spent most of the day as hunter‑gatherers; agriculture was adopted near the end of the day (11:54 p.m.); the future remains uncertain—will we solve or repeat the problems created by farming?

The transition to agriculture yielded greater population potential but at substantial costs to health, equality, and freedom for many people; the perceived benefits (leisure, art, civilization) do not negate the profound trade‑offs introduced by farming.