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Chapter 8 · 0.5 min · from Homo Deus

The Time Bomb in the Laboratory

Chapter summary from Homo Deus by Yuval Noah Harari.

More by Yuval Noah Harari

The next revolution is new hardware: brains and bodies edited, enhanced, engineered. Once biology becomes code, power shifts to labs, clinics, and data centers.

The danger is less one breakthrough than a cascade of “reasonable” upgrades—healthier embryos, sharper minds, longer lives—until the gap between the upgraded and the rest hardens into caste.

Humanism claimed every person has unique value. Bioengineering tempts societies to measure value in performance: productivity, intelligence, resilience, even mood. Equality starts to look inefficient.

At the same time, the ability to model and manipulate emotions grows. If you can tune desire and fear, you can steer crowds without force.

A time bomb sits quietly while incentives line up. Then the old definition of “human” no longer fits the world.

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