一张地图，记录人类如何 走到今天

From clay counting-tokens to merchants signing their names under a ship's description at Lloyd's — how counting learned to price a catastrophe, in 6 steps.

6 步 · 5,088 年

From clay tally-tokens to Turing's imaginary machine — how counting sheep became the theory of everything a computer could ever do, in 7 steps.

7 步 · 5,336 年

A broth left to rot over a summer holiday taught us to make immunity to order — a million years of fire, glass, and lenses in 6 steps.

6 步 · 1,001,879 年

For most of history a scratch could kill you. The cure took a microscope, a heresy, and a moldy dish — 6 steps across the whole of civilization.

6 步 · 1,001,928 年

China flew kites in 500 BC. Powered flight waited until 1903 — not for a better wing, but for a lighter fire.

7 步 · 1,001,903 年

From a rubbed piece of amber to a machine that talks — 2,600 years in 12 steps.

12 步 · 2,620 年

From amber rubbed with fur to a river mill lighting a city 175 km away — 2,500 years of learning to move electricity, in 7 steps.

7 步 · 2,491 年

Iron rusted for 3,000 years until chemistry learned what rust actually is — the road from a fired clay pot to metal that heals its own wounds, in 7 steps.

7 步 · 1,001,913 年

A processor is just sand we taught to think. The trick took seven capabilities and a way to draw with light.

7 步 · 1,001,971 年

The first fully synthetic thing in most homes was a toothbrush. Tracing its bristles back runs through 8,000 years of chemistry.

6 步 · 19,935 年

Rome had engineers, empire, and industry — and still couldn't have built a calculator. Here's the chain of ideas they were missing.

7 步 · 5,389 年