2.2 — Rule #1 — The recipe for a perfect prompt (structure)

🟢 In plain words — a good prompt is like a mission sheet handed to a new employee: who you are (Role), where you’re stepping in (Context), what I’m asking (Task), in what form to hand it back (Format). Fill those 4 boxes and the ambiguity disappears.

A good message to AI is never just one sentence. It contains 4 ingredients that remove ambiguity:

1. The Role (the persona, the character it plays) — Tell the AI who it is. “You are a marketing expert,” “You are a tax lawyer.” This instantly changes its vocabulary and level of expertise.
2. The Context — Give the background. (“We sell eco-friendly shoes for young urban dwellers.”)
3. The Task — Explain precisely what to do, with strong action verbs (“write,” “compare,” “classify,” “summarize”).
4. The Format — Say exactly how to present the answer. (“A bullet list,” “a table,” “under 100 words.”)

🔬 Before / after — the same need, two results.

• ❌ Vague: “Give me some post ideas for my account.”
• ✅ Structured: “[Role] You are a social media manager. [Context] Specialty coffee brand, 25-35 audience on Instagram. [Task] Propose 5 post ideas to launch a new roast. [Format] A table: idea · hook · suggested visual.”

The structured version is usable as is; the vague version returns platitudes you’ll have to rework. Same 30 seconds of writing, result 10× better.

Note

🏷️ The pro trick: tags. So the AI doesn’t mix up your instructions with the text to process, wrap the latter in angle-bracket < > tags (like labels that mark off the text):

Summarize the text below in 3 points.

<text>
… the text to summarize …
</text>

This helps the AI “file” the information and reduces misinterpretation.

🛡️ Anti-hallucination reflex (recall from Module 1: a hallucination is a false fact stated with confidence). Defuse it in the prompt: add “If you’re unsure or the information is missing, say so clearly instead of inventing” and, when relevant, “rely only on the provided text.”

⚠️ Common mistake — cramming everything into one catch-all sentence (“make me a nice professional marketing post”). The AI then has no role, no context, no format. The reflex: mentally separate the 4 ingredients, even in two lines.

✅ In short

• A solid prompt = Role + Context + Task + Format.
• Strong action verbs in the task (“write,” “compare,” “classify”).
• Tags (e.g. <text>…</text>) separate your instructions from the content to process.
• Add an anti-hallucination guardrail right in the prompt.