Unit 3 · Lesson 1
Role, goal, and context
The three things every strong prompt tells the AI.
Two kids ask an AI the same thing.
Kid one types: "Write about dogs."
Kid two types: "You're a vet explaining to a nervous 6-year-old. Help me write three calm sentences about why the puppy needs a shot."
Same tool. Wildly different answers. The difference isn't the AI being smarter for kid two — it's that kid two thought more clearly before asking.
A prompt isn't a magic spell. It's your own thinking, made specific enough to be useful.
One idea: role + goal + context
Almost every weak prompt is missing one of three ingredients. Almost every strong one has all three.
| Ingredient | The question it answers | Example |
|---|---|---|
| Role | Who should the AI act as? | "You're a patient math tutor." |
| Goal | What do I actually want? | "Help me understand why, not the answer." |
| Context | What does it need to know? | "I'm in 7th grade and I keep mixing up negatives." |
"Write about dogs" has none of these. It's a shrug. The AI fills the empty space with the most average, boring, middle-of-the-road answer it can — because you gave it nothing to aim at.
Add the three ingredients and you hand it a target.
Do the thing
Here are three lazy prompts. Rewrite each one by adding a role, a goal, and one piece of context.
- "Help with my essay."
- "Explain the water cycle."
- "Give me ideas."
For example, #1 could become: "You're a writing coach for middle schoolers (role). Help me make my opening paragraph less boring without writing it for me (goal). It's a personal essay about the first time I cooked dinner (context)."
Quick check. If your rewrite still works when handed to a human stranger — if a person could read it and know exactly what you want — it's a good prompt. If a human would say "wait, what do you mean?", the AI is thinking the same thing. It just won't ask.
Why this matters
Here's the sneaky part: writing a good prompt forces you to figure out what you actually want. That's not busywork — that's the whole skill.
- Vague in, vague out. The AI can't read your mind, and a fuzzy question is a fuzzy thought. Sharpening the prompt sharpens you.
- Role, goal, context works on people too. The clearest emails, texts, and questions you'll ever send have all three.
Next lesson, we add the second half of a great prompt: telling the AI the shape of the answer you want — how long, what format, and what to leave out.