The Information: 8 key ideas
The core ideas of The Information, each in under a minute, written in our own words. Want the full depth? Get the book.
- IDEA 1 OF 8
Information shapes human history
Gleick tells the story of information, from early writing and drums to computers and the internet.
He argues that information has become the central substance of the modern world. Every era found new ways to send it.
- IDEA 2 OF 8
Drums once carried messages
Gleick describes African talking drums, which sent complex messages over long distances by imitating the tones of speech.
Drummers added extra phrases to avoid confusion, a way of building in redundancy.
- IDEA 3 OF 8
Early machines dreamed of computing
Gleick describes Charles Babbage's plans for calculating engines and Ada Lovelace's insight that such machines could handle symbols, not just numbers.
Their ideas were far ahead of their time. Computers later fulfilled them.
- IDEA 4 OF 8
The telegraph shrank distance
Gleick describes how the telegraph and Morse code allowed messages to travel almost instantly.
This changed business, news and how people thought about time and space. Codes made messages cheap to send.
- IDEA 5 OF 8
Shannon defined information
Gleick tells how Claude Shannon, an engineer at Bell Labs, created a mathematical theory of information in 1948.
He separated information from meaning and showed how to measure it. His theory underpins modern communication.
- IDEA 6 OF 8
The bit became fundamental
Gleick explains that Shannon's unit of information, the bit, is a choice between two options.
Bits made it possible to treat text, sound and images in the same way. Computers depend on them.
- IDEA 7 OF 8
Life runs on a code
Gleick describes how biologists came to see genes as stored information, a code copied and passed on.
Information became a way of understanding life itself. DNA, in this view, is a message passed down through generations.
- IDEA 8 OF 8
Abundance brings new problems
Gleick argues that today we face a flood of information, which makes finding meaning harder.
He sees this as the latest chapter in a long human story. Choosing what matters is the new challenge.
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