Separate supported facts from claims.

Your first win, on fictional files

Download both fictional files first. They are free and work without a ZIP on Mac, Windows, and Linux.

Read brief-sample.txt and draft-sample.txt in this folder. Create research-brief.txt with Supported and Not supported headings. Under Supported, cite brief-sample.txt for each fact about the welcome experience. Under Not supported, list draft claims the brief cannot justify. Do not edit the inputs or invent evidence.

RESEARCH BRIEF: fictional Riverbend Co-op welcome experience

Supported
- Riverbend Co-op is a fictional neighborhood grocery co-op. (brief-sample.txt, line 3)
- New members sign up online. (brief-sample.txt, line 3)
- The current welcome is a receipt and a fridge magnet. (brief-sample.txt, line 3)
- Staff can invite new members to a Saturday morning orientation. (brief-sample.txt, line 3)
- Staff can show new members how to suggest products. (brief-sample.txt, line 3)
[trimmed]
- "Best-in-class membership" (draft-sample.txt, line 3): the brief contains no comparison with other co-ops or retailers.
- "Guaranteed savings" (draft-sample.txt, line 3): the brief says it provides no discounts, and nothing in it supports a guarantee.
- "Effortless grocery delivery" (draft-sample.txt, line 3): the brief says it provides no delivery service.
- "Committed to exceptional experiences" (draft-sample.txt, line 3): the brief has no evidence about experience quality. The welcome it describes is a receipt and a fridge magnet.
- "A world-class solution for all your shopping needs" (draft-sample.txt, line 3): the brief contains no rankings, sales results, or product range information to support this claim.

Example outcome, recorded 2026-10-08 with Claude Code 2.1.292. Your result may differ.

Human check: Open brief-sample.txt and confirm each cited line. The only citation here is the fictional brief, not independent evidence.

Your first time in a terminal

Use a computer for this part. Choose Claude Code for the optional Mac kits or OMP for the plain-text practice path. Install only your chosen tool. Nothing is uploaded to this site.

Both practice-file downloads are directly above the example.

Make a folder called cli-practice inside Downloads, then put both fictional files in it. Leave the originals unchanged. Then choose your computer below.

If a command is not found, use the linked official install troubleshooting. For a slower walkthrough, see the Claude Code terminal guide and OMP quickstart. The same two plain-text files work in either lane; the four Mac ZIP kits are Claude Code only.

One next move

Open the saved file and identify a sentence to improve. Ask for a second version saved as a new file, without changing either original. Provide two sources you may share and ask the agent to mark any claim neither supports.

Follow the shared four-step ladder: first file, second version, skill, separate review.

Want the ready-made Claude Code kit?

The ZIP has a Mac installer, six Claude Code commands, two skills, a guide, and editable memory. The plain-text task above works without a ZIP on Mac, Windows, or Linux. This kit has not been adapted to OMP.

Download the Mac Claude Code Kit for Researchers

More to try

Make a finding land

Read draft-sample.txt as if it were a finding for a non-expert reader. Rewrite it so a smart person with no background gets it in one read, without dumbing it down. Keep the caveats.

Scope before you dig

I need to research [topic]. Before searching, ask me three questions to scope it, then lay out the five sources or angles you would check and why.

Stress-test the conclusion

Here is my conclusion and the evidence for it. Argue the strongest case that I am wrong, then tell me what single piece of evidence would settle it.

Your challenge

When you choose your own material, use only files you are allowed to share. Check every saved output yourself.

• Turn a stack of sources into a one-page brief with citations
• Rewrite a finding so a non-expert gets it in one read
• Pressure-test a conclusion before you put your name on it
• Get a sourced answer to a question instead of vibes
• Build a skill for the brief format you use every time

Explore another situation

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