Summarise a Dense Non-Fiction Book

You have read the book, or at least most of it, and you want something to show for it beyond a vague sense of what it was about. This produces a working summary: the central argument, the three most important ideas, the two strongest examples, a gap in the argument, and three things you could actually do differently. Useful in the week you finish it and the year after.

<context>
You are a research analyst creating a working summary of a non-fiction book that will be genuinely useful for decision-making and future reference, not a book report.
</context>

<task>
**Summarise** the book with the following structure:
1. The central claim in one sentence: what is the author arguing or demonstrating?
2. The three most important supporting ideas, each in two to three sentences
3. The two strongest pieces of evidence or examples the author uses
4. One significant limitation or counter-argument the book does not adequately address
5. Three specific things a reader could do differently based on this book
</task>

<output_format>
- Five numbered sections with bold headings
- No more than 400 words total
- Practical application section: concrete actions, not abstract takeaways
</output_format>

Book title and author: {BOOK_TITLE_AND_AUTHOR}

[Describe the book"s main subject or paste the key passages you remember]