Stratum 01 · the foraging world
The Deep Past & the Agricultural Revolution
~300,000 BCE — 3000 BCE
For 95% of our story we were foragers. Then, in a few places at once, we started to farm — and everything else became possible.
- Sapiens, out of Africa. Anatomically modern humans emerge (~300k BCE), spread across the globe, and interbreed with Neanderthals and Denisovans on the way.
- The Neolithic fork. Farming is invented independently — the Fertile Crescent, China, Mesoamerica, the Andes, New Guinea, the Sahel — bringing surplus, cities, property, hierarchy and new disease.
- Monuments before granaries. Göbekli Tepe shows monumental building before farming was finished — reordering the old "farms first" story.
Stratum 02 · cities, writing, empire
The Ancient World & Classical Empires
~3000 BCE — 500 CE
The first cities learn to write things down — and the ethical operating systems we still run on are installed within a few centuries of each other.
- The first states. Sumer, Egypt, the Indus Valley and Shang China invent cities, writing, law and monumental power.
- The Axial Age. Roughly 800–200 BCE, Confucius, the Buddha, the Hebrew prophets and Greek philosophy appear almost together — the moral software of civilisation.
- Empires of reach. Persia, Alexander's Hellenistic world, Mauryan India, Han China and Rome knit the Old World together and open the Silk Road.
Stratum 03 · the connected middle
Medieval Worlds (the global middle ages)
~500 — 1450
Not "the Dark Ages." While post-Roman Europe recovered, the centre of gravity sat in Baghdad, Chang'an and the Indian Ocean.
- Islam's golden age. Abbasid Baghdad's House of Wisdom preserves and advances Greek learning; algebra, optics and medicine flourish.
- Song China, the most advanced society on earth. Printing, gunpowder, the compass, paper money and vast cities.
- The Mongols reconnect Eurasia — the largest land empire ever, a brief "Pax Mongolica"… and the highway for the Black Death. Mali, Great Zimbabwe and the Swahili coast trade gold.
Stratum 04 · the hemispheres join
The Early Modern World 1450–1750
1450 — 1750
In 1492 two halves of the planet that had evolved apart for millennia collide — with world-remaking, and catastrophic, results.
- The Columbian Exchange. Crops, animals and silver cross the oceans — and Old World disease kills an estimated 90% of Indigenous Americans, the largest demographic collapse in history.
- Print, Reformation, Science. Gutenberg's press cracks the information monopoly; Luther splits the Church; Copernicus to Newton rebuild the sky.
- Gunpowder empires & the Atlantic economy. Ottomans, Safavids, Mughals and Ming/Qing dominate Asia while the Atlantic slave trade — an estimated 12 million people — builds the plantation world.
Stratum 05 · the fossil break
The Age of Revolutions & Industry
1750 — 1914
Coal blows the lid off the old energy ceiling, and a wave of revolutions rewrites who is allowed to rule.
- The Industrial Revolution. Steam, the factory and the railway break the Malthusian trap — the hockey-stick of population, output and carbon begins.
- The Atlantic revolutions. American, French and Haitian (the only successful large slave revolt) revolutions spread the language of rights, nation and liberty.
- Industrial imperialism. The Scramble for Africa, the Raj, and China's "century of humiliation" — the costs of the era, named plainly.
Stratum 06 · total war & acceleration
The Twentieth Century & After
1914 — now
The century that lifted the most people out of poverty and industrialised killing on a scale never seen — and then handed us the network.
- Total war & its aftermath. Two world wars, the Holocaust and the bomb; then decolonisation dissolves the European empires and remakes the map.
- The Cold War & the long boom. A nuclear standoff, the space race, and the greatest economic expansion in history — to 1989 and the Soviet collapse.
- The digital acceleration. The transistor, computing and the internet compress the planet; China rises; climate and AI define what comes next.