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Tracks›Claude Cowork
L2Lesson 6Free

Rewrite a document with source proof

Edit without losing facts

After this, you'll be able to create a source-checked rewrite and use it to make Claude's work with local files safer and easier to verify.

Before you start

Complete Turn files into a sourced summary first.

The idea

A rewrite should improve the document without inventing facts or losing source meaning. This lesson asks you to make a source-checked rewrite, not a broad promise that Claude can use files. The output should be specific enough that you can inspect what Claude read, what it produced, and what still needs review.

A revised document starts to curl away from the source sheet and lose its evidence trail.
A revised document starts to curl away from the source sheet and lose its evidence trail.

Here is the before and after: Before, Claude rewrites the text and you have to trust that facts survived. After, the rewrite includes changed sections, source notes, removed claims, and questions where the source was unclear. For example, a client folder might include notes, drafts, exports, and old versions. The lesson output should say which files are in scope, which are out, what Claude is making, and how you will prove the result came from the right source.

Now try it: Ask Claude to rewrite one document and produce a change table beside it. Make one choice before asking Claude to work: folder, file set, output shape, source check, access path, or maintenance rule. That choice keeps desktop file work from becoming vague local search.

The folder workflow works when a source-checked rewrite connects the input, the check, and the next step.
BeforeAfter
InputScatteredNamed
OutputGuessinga source-checked rewrite
CheckHiddenVisible
Next stepUnclearReady

The lesson turns a loose desktop files idea into an artifact you can inspect.

The lesson is done when you can show the source boundary, the output, and the check that proves the output is safe to use.

Try it (16 min)

Watch out for

  • Letting tone edits change facts.
  • Adding impressive claims without source support.
  • Ignoring removed claims.

Paste this into Claude

Rewrite this document using the approved source files: [paste or name file]. Return Revised Draft, Change Table, Source Notes, Claims Removed, Claims Added, and Questions. Do not add facts that are not in the source files.

If any input is missing, ask me up to three questions before producing the artifact. Then return five sections: Finished Artifact, Realistic File Example, Assumptions To Check, What I Should Use In The Next Lesson, and One Risk If I Trust This Without Fixing It. Keep the answer practical enough that I can paste it into my folder workflow notes.

Created by potrace 1.16, written by Peter Selinger 2001-2019 What a good response looks like

Finished Artifact:
- a source-checked rewrite
- Why it matters: it gives the folder workflow a concrete thing to inspect instead of a vague intention.
- Use it next: paste this artifact into the next lesson before asking Claude to write, build, import, publish, or review anything.

Reality Check:
- The artifact names the user, input, decision, owner, or proof it depends on.
- The weakest assumption is visible.
- The next step can be completed in one sitting.

Created by potrace 1.16, written by Peter Selinger 2001-2019 What good looks like

  • The revised draft is included.
  • Changes are summarized in a table.
  • Source notes are included.
  • Unverified additions are blocked or questioned.

Created by potrace 1.16, written by Peter Selinger 2001-2019 Go deeper (8 min)

Paste this into Claude

Without rereading the lesson, explain why a source-checked rewrite matters in three bullets. Then apply it to a second file example: [describe a different folder or document set]. Return What Changed, What Stayed The Same, What To Check Before Trusting The Output, and the exact next action.

Created by potrace 1.16, written by Peter Selinger 2001-2019 What a good response looks like

Transfer Check:
- What changed: the second example has a different audience, input, or delivery context.
- What stayed the same: a source-checked rewrite still needs a source, a review check, and a next step.
- Before trusting it: inspect the source check that would catch a wrong assumption.
- Next action: run the check once, then carry the revised artifact into the next lesson.

Created by potrace 1.16, written by Peter Selinger 2001-2019 What good looks like

  • You explained the lesson idea from memory before applying it again.
  • The second example changes the artifact instead of copying the first answer.
  • The trust check names a real risk.
  • The next action can be done in one sitting.

When this breaks

  • Breaks when a rewrite changes meaning because the owner may approve a prettier but wrong draft.
  • Fails when added claims are not checked because the document gains unsupported content.

AI can help with this

Paste the exercise prompt into Claude with your real folder or file context. Ask Claude to interview you one question at a time, produce a source-checked rewrite, challenge the weakest assumption, and rewrite the artifact once so it is ready for the next file step.

Each revised section sits beside a source shard, with small proof tabs tying them together.

Created by potrace 1.16, written by Peter Selinger 2001-2019 You can now

✓

You can point to a source-checked rewrite.

  • ✓You can explain which files are in scope.
  • ✓You can name the assumption that still needs checking.
  • ✓You can use the output in the next lesson.

Key takeaways

Source-checked rewriting lets Claude improve the draft while keeping the facts visible.

  1. 1Tone edits can change meaning.
  2. 2Change tables make rewrites inspectable.
  3. 3Added claims need source support.
  4. 4Removed claims should be visible.

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