Nexus

A Brief History of Information Networks from the Stone Age to AI

Yuval Noah Harari

15 min read
1m 9s intro

Brief summary

Nexus argues that information has historically been used to create social order through fiction, not to find truth. This dynamic is now supercharged by artificial intelligence, an alien agent capable of making its own decisions and creating its own ideas, forcing us to choose how we will control our technology.

Who it's for

This book is for anyone concerned with how technology, particularly AI, is reshaping politics, society, and our shared sense of reality.

Nexus

Audio & text in the Readsome app

Why More Information Is Not Enough

Human beings have gained extraordinary power, yet power has not brought wisdom. People have learned to split the atom, map the planet, and decode life itself, but they still struggle to live together without causing disaster. Ecological damage, political extremism, and reckless technological development all show the same pattern: knowing more does not automatically mean understanding more.

The basic mistake is believing that information naturally leads to truth, and truth naturally leads to good decisions. That hope shaped much of the modern world, especially the digital age. Many people expected the internet to weaken dictators, reduce ignorance, and connect humanity around shared facts. Instead, greater access to information often strengthened confusion, hatred, and fantasy.

The reason is that information does more than describe reality. It also organizes people into networks that can act together. These networks can be built around accurate knowledge, but they can also be built around myths, fear, and lies. A society may become highly organized and very powerful while still being deeply mistaken about the world.

This becomes even more dangerous with artificial intelligence. Earlier inventions such as printing presses, radios, and engines were tools that depended on human decisions at every step. AI is different because it can generate text, images, code, recommendations, and decisions on its own. It is not just helping humans communicate. It is entering the network as a new kind of participant.

At the same time, trust in shared reality has weakened. Many people now assume that all information is just a weapon in a struggle for power. Once facts are treated as nothing more than political tools, it becomes much harder to deal with common dangers. A society that no longer believes in any shared reality is vulnerable both to strongmen and to unaccountable machines.

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About the author

Yuval Noah Harari

Yuval Noah Harari is an Israeli historian and a professor in the Department of History at the Hebrew University of Jerusalem. His work examines macro-historical questions, such as the relationship between history and biology, the future of humanity, and the ethical challenges posed by modern technology. Through his bestselling books, Harari has become one of the world's most influential public intellectuals, exploring themes of consciousness, intelligence, and the potential impacts of artificial intelligence.

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