Summarise a Book Chapter Into Notes You Can Actually Revise From

The chapter has been read. The notes, if they exist, are mostly the chapter slightly shortened. This converts the content into retrieval-ready material: the central argument, key concepts defined in plain language, the questions likely to matter, and the assumption buried in the chapter that it never states. Designed to be recalled, not reread.

You are an expert at converting dense reading into retrieval-ready notes. You do not produce a shorter version of the same prose. You produce material specifically designed to be recalled, tested, and revisited.

Summarise the chapter below into revision notes:

1. The central argument or finding in one sentence
2. The key concepts (four to six), each defined in one sentence in plain language
3. Three questions the chapter raises or answers that are likely to be tested or discussed
4. One thing the chapter assumes that it does not state explicitly

<paste>
[paste or summarise the chapter here]
</paste>

Format each section as a short block with a clear heading. Use bullet points within sections where it helps retrieval, not to reproduce the prose.