# Vannevar Bush

Engineer and wartime science administrator whose 1945 essay imagined the Memex, the conceptual seed of hypertext and the personal knowledge base.

**Vannevar Bush** (1890–1974) was an American engineer who, as director of the U.S. Office of Scientific Research and Development, coordinated American science during the Second World War. He is remembered here for a single essay.

## Key work in the library

- [As We May Think](/docs/as-we-may-think.md) (1945) — the essay introducing the **Memex**, a personal device for storing one's records and building *associative trails* between them.

## Significance

The Memex is the headwater of the entire lineage in the [overview](/wiki.md): [Engelbart](/wiki/engelbart.md)'s [Augmenting Human Intellect](/docs/augmenting-human-intellect.md) re-examined it directly, and it precedes [Licklider](/wiki/licklider.md)'s 1960 work by fifteen years. Its emphasis on private, actively curated knowledge with the links between documents as valuable as the documents themselves anticipates both hypertext and the [LLM-maintained wiki](/wiki/llm-maintained-wiki.md).

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## Backlinks

Pages that link here:

- [As We May Think](/docs/as-we-may-think.md) — Vannevar Bush's wartime essay imagining the Memex — a personal device for storing and associatively linking all of one's books, records, and communications.
- [Compounding Knowledge vs. Retrieval](/wiki/compounding-knowledge-vs-rag.md) — Why an LLM-maintained wiki accumulates understanding where retrieval-augmented generation re-derives it on every query.
- [Douglas Engelbart](/wiki/engelbart.md) — Inventor and researcher who turned the idea of augmenting human intellect into a working research program and the demos that defined modern computing.
- [LLM-Maintained Wiki](/wiki/llm-maintained-wiki.md) — A persistent, interlinked knowledge base that a language model builds and maintains — integrating each source once, rather than re-deriving answers from raw documents on every query.
- [LLM Wiki: A Pattern for Building Personal Knowledge Bases Using LLMs](/wiki/llm-wiki.md) — Karpathy's pattern for an LLM-maintained wiki: instead of re-deriving answers from raw documents on every query (RAG), the model integrates each source into a persistent, compounding knowledge base.
- [Ted Nelson](/wiki/ted-nelson.md) — Information theorist who coined 'hypertext' and 'hypermedia' and argued, decades before the personal computer, that computing power must belong to individuals.