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Sapiens
Chapter 17 · 0.5 min · 17 of 21

The Wheels of Industry

A chapter summary from Sapiens by Yuval Noah Harari.

For most of history, human work depended on muscle, and muscle depended on plants.

— From Sapiens by Yuval Noah Harari

Industrialization was a revolution in energy conversion. For most of history, human work depended on muscle, and muscle depended on plants. That chain set a ceiling on production.

Engines and fossil fuels cracked the ceiling. Coal and oil let societies mobilize power far beyond what fields could store. Factories reorganized labor; railways shrank distance; clocks and schedules tightened their grip on daily life.

Industry also reshaped farming. Machines, fertilizers, insecticides, and medication increased yields and tightened control over animals. Food became more abundant for many humans, while the suffering of domesticated creatures often became more systematized.

“More” is not the same as “better.” Industrial growth can extend lifespans and multiply choices, while also creating dependencies, pollution, and bureaucracy. The wheels turn fast, and they demand fuel.

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A Permanent Revolution
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