A connection
How did Division of Labor lead to Wheel and Cart?
8 steps · 7 domains · 3,500 years
- Division of Labor~7,000 BC (craft specialists) · 7,000 BCSplitting work so each person does one thing well instead of everything badly — the arrangement that turns food surplus into every other profession.
- 有赖于它的是—— 使之可能 ↑Agriculture~9,500 BC · 9,500 BCTurning a patch of land into a repeating calorie machine by planting and tending chosen crops — the surplus that made cities, writing, and everything after them possible.
- 有赖于它的是—— 使之可想 ↑Food Triagesince the species began · 300,000 BCThe hard-won knowledge of what is safe to eat and how cooking turns poison into food — the difference between a full belly and a fatal mistake.
- 有赖于它的是—— 使之可造 ↑Control of Fire~1,000,000 BC · 1,000,000 BCThe ability to keep, feed, and eventually start a fire at will — humanity's first external source of energy.
- 使之可造 ↓Charcoalby ~4,000 BC (as furnace fuel) · 4,000 BCWood baked without air until only nearly-pure carbon remains — a fuel that burns far hotter and cleaner than the wood it came from.
- 使之可能 ↓Iron Smelting (Bloomery)~1,500 BC · 1,500 BCReducing iron ore to workable metal in a charcoal-fired clay furnace.
- 使之可能 ↓Mechanical Clock~1300 AD (escapement) · 1300 ADA falling weight checked by an escapement that releases its power one tick at a time — the first machine to chop time into equal, countable beats.
- 有赖于它的是—— 使之可想 ↑Lever, Pulley, Screw, Gear~6,000 BC (levers and ramps) · 6,000 BCThe simple machines — lever, ramp, pulley, screw, gear — that trade force for distance, letting ordinary human muscle move loads far beyond its natural limit.
- 使之可想 ↓Wheel and Cart~3,500 BC · 3,500 BCA disc turning on an axle that converts dragging into rolling, cutting the effort of moving a heavy load overland many times over.
Every link in this chain is a verified dependency — not a trivia association. Explore either end: Division of Labor or Wheel and Cart.