Lighting the Way to AIExact recipes for real AI jobsHome

write · ~20 min

Turn options and facts into a decision memo that separates evidence from assumptions.

Last verified: 2026-09-07

The memo is only as good as the notes you paste. Assumptions must stay labeled. This is not legal, financial, or medical advice.

Top picks

Best Overall

Claude

Strong at a visible Assumptions vs. Facts split.

Open Claude

Best Free

ChatGPT Free

Enough for one careful paste-and-review session.

Open ChatGPT

Best Power-User

Gemini

Handy if the options already live in a Doc.

Open Gemini

Protocol

  1. Paste the decision, options, and facts only (4 min).

    Write the decision in one sentence, 2–5 options, facts with sources/dates, constraints (budget, date, people), and what “good” means if you have it. Label guesses as ASSUMPTION before you paste. Do not add a market size you did not look up.

  2. Lock facts vs. assumptions.

    Paste the rules first so the model cannot promote a guess into a finding.

    Copy-paste prompt

    Write a decision memo from notes I paste.
    
    Not legal, financial, or medical advice. I decide.
    
    Hard rules:
    - Separate FACTS (from my paste, with source/date if I gave one) from ASSUMPTIONS (labeled).
    - Do not invent options, costs, risks, or stakeholders.
    - If a number is missing, write UNKNOWN. Do not fill a TAM, ROI, or headcount.
    - A recommendation is allowed only if I asked for one, and it must cite my facts — not new ones.
    - Keep it to one page unless I say otherwise.
    
    Output:
    1) Decision in one sentence
    2) Options table: option · facts that apply · assumptions · unknowns
    3) Risks and reversibility (only from my notes)
    4) Recommendation (or “no recommendation — missing X”) if I asked
    5) Open questions
    
    Confirm the rules, then wait.
  3. Generate the memo and hunt promoted guesses.

    If a sentence in Facts has no source in your paste, move it to Assumptions or cut it. Then send:

    Generate command

    Here are the decision, options, facts, and labeled assumptions. Write the memo. Do not add an option or a number. If I did not ask for a recommendation, omit one.
  4. Share with the people who must live with it.

    You still send. If you want a five-line exec cut, use the block below—facts stay facts.

    Exec five-liner

    Cut to five lines: decision, two facts, one assumption, one unknown. No new numbers. Label the assumption.

When not to

  • Do not let an assumption land in the facts table without a label.
  • Do not invent ROI, market size, or a stakeholder who was not in the notes.
  • This is not legal, financial, or medical advice. High-stakes calls still need the right specialist.
  • Skip this recipe if you have only a vibe and no options written down. Name two options first.

Dated sources

Related recipes

Copied