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An AI summary is a map of the document, not a replacement for it
Knowledge workers drown in packs: board papers, contracts, research PDFs, incident reports, vendor proposals. Asking AI to summarize documents is the most common workplace use after email, and the most common way a mistake becomes a shared truth. A summary that drops an exception, a dissent, or a date will still look like competence. The reader of the summary will not know what was left on the cutting-room floor.
The method is simple and rarely followed. Define who the summary is for and what decision it must support. Ground the model in the actual file inside an approved tool. Ask for a structured output with pointers back to sections. Then spot-check the numbers, names, and the one thing that would change the decision if it were missing.
If you cannot open the source, you are not summarizing. You are hoping. Hoping is not a professional practice.
A summary for a board is not a summary for an operator. Same document, different artefact. Name the reader first.
What to ask for instead of “summarize this”
“Summarize this” produces a generic abstract. Ask for: the decision required, what changed, what is still open, risks named by the authors, and numbers with their section. Ask the model to list what it did not include. That last list is how you catch the buried limitation on page forty.
For contracts, ask for obligations, dates, money, termination, and unusual clauses — and for the word “not found” when a clause is absent. Absence matters. Models prefer to fill a template. An empty cell is more honest than a plausible clause.
| Reader | Summary they need | What you must still open |
|---|---|---|
| Board | Decision, movement, risk | The page with the number you will say aloud |
| Counsel | Obligations and exceptions | The clause itself |
| Operator | Actions, owners, dates | The procedure they will run |
| New joiner | What this is and why it exists | The glossary and the current version |
A grounded summary prompt
Use a tool that can see the file you are allowed to give it. Do not paste a confidential contract into a consumer chat. Tell the model the reader and the decision. Forbid facts from outside the document. Ask for quotes or section numbers for every figure. Then read those sections. If the pointer is wrong, the summary is wrong.
For very long packs, summarize in layers: contents, then the two chapters that hold the decision, then the numbers. A single pass over two hundred pages is how details vanish.
Role: You are preparing a briefing note I will use in a meeting.
Task: Summarize the document for the reader I name.
Context: The decision the meeting must take.
Constraints:
- Use only this document. If a point is not in it, say not found.
- Attach a section or page pointer to every number and name.
- List important items you omitted.
Output: One page: decision, what changed, open questions, risks, numbers with pointers.
Quality checks: What a sceptical reader would say you left out.Keep the omitted-items list. If it contains the thing you cared about, the one-page version failed and you still have to read. That is a successful check, not a failed tool. For a board pack, also ask for a three-line version you could say aloud without looking down. If you cannot say it, the summary is still a document, not a briefing.
Compression hides dissent, dates, and footnotes
Models smooth disagreement. A paper with a minority view becomes a single recommendation. Dates slide. “Proposed” becomes “agreed.” Footnotes that limit the finding disappear. Your review is looking for those three: dissent, time, and limits.
Do not chain summaries. A summary of a summary of a transcript is a party game. Each pass deletes the exception. If the chain is long, go back to the source once before you act.
| Mistake | What it looks like | What to do instead |
|---|---|---|
| Generic abstract | Five vague paragraphs | Decision, movement, pointers |
| No source tool | Pasted secrets into public chat | Approved file path and class |
| Trusting the number | Repeating a figure in a meeting | Open the page first |
| Summary chain | Notes of notes of notes | One hop back to the file |
If you will quote a number from a summary, you have not finished. Open the document. The meeting will.
Related reading on StudyGrid
Read next: How to Fact-Check ChatGPT AI for Research at Work AI in Everyday Work. Those essays sit beside this one. Use them when you need the neighbouring skill, not as a substitute for the check you still have to make.
What to do this week
Summarize one real pack for a named reader. Require pointers. Check three figures and one omission. If the pointers fail, change the prompt before you trust the next pack.