The prompt is all it has
A prompt is the message you type to an AI. It sounds trivial, but it is the whole instruction. The model cannot see your face, your class, your deadline, or the three drafts you already wrote. All it has is your words. So "help with my essay" gives it almost nothing. Is the essay for English or history? How long? What is wrong with it right now? A person would ask. The model usually just guesses, and you get a generic answer you did not want. Every detail you leave out, it fills in with the most average possible choice.
Four pieces of a strong prompt
- Goal: say exactly what you want. "Rewrite this paragraph so it flows better" beats "fix this".
- Context and role: say who it is for and who it should be. "You are a patient science tutor. I am 15 and I find this confusing."
- Format: say what shape you want. A bullet list, a table, under 100 words, one paragraph.
- Example: if you like a certain style, paste a sample and say "like this".
Before and after
Compare two prompts. Before: "Explain photosynthesis." After: "You are a friendly biology tutor. Explain photosynthesis to a 15-year-old in under 150 words, using one everyday comparison. Then give me three quiz questions to check I understood." The second one names a role, an audience, a length, a style and a format. It takes twenty seconds longer to write and saves five minutes of fixing. Notice it did not use any special words or tricks. It is just clear, the way a good request to a person is clear.
Ordering at a café
Walk up to a counter and say "something to eat". You will get whatever is easiest to make. Say "a chicken wrap, no mayo, to go" and you get exactly that. The person behind the counter is not being difficult. They cannot read your mind. A prompt works the same way. The more precisely you order, the closer the result is to what you pictured.
Three habits of people who get good answers
- Ask it to ask you questions first: "Before you answer, ask me anything you need to know." This catches missing context.
- Ask it to show its steps. Watching the reasoning makes mistakes easier to spot.
- Iterate. The first answer is a draft. Reply with what to change: "shorter", "less formal", "add an example". Each round gets closer.
A perfect prompt can still get a wrong answer
Clear prompts improve answers a lot, but they cannot make a model know things it never learned, or stop it guessing when it does not know. Next: the four ways AI gets things wrong, and how to catch each one.
Check yourself · 3 quick questions
Which prompt is most likely to get a useful answer?
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Summarise the three main causes of the First World War in five bullet points for a Year 10 student — It states the goal, the audience and the format, so the model does not have to guess what you want.
What does giving the model a role, such as "you are a patient science tutor", do?
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It sets the tone and viewpoint the answer is written from — A role is context: it tells the model who it should sound like and who it is talking to, which shapes the whole reply.
The first answer is too long and formal. What is the best next move?
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Reply with what to change and ask again — The first answer is a draft; iterating with specific changes, like "shorter" or "less formal", gets you closer each round.