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Make a start
One step at a time.
3 steps
Start with the synthetic worked example or other non-sensitive inputs. Run one prompt at a time in your chosen AI tool. Replace any bracketed placeholders with the requested material, check each reply, and supply the source or earlier outputs that step needs. Paste them again if the tool lacks that context.
Start with the synthetic example, then adapt each prompt to your task.
01
Open a chat and use the complete sample
Open https://chatgpt.com. If you have access, choose New chat. Copy all the instructions below (the prompt), including the SAMPLE INPUT, into the message box and send it. You do not need to upload a file. You should see a two-product feature card and two clearly conditional fit notes. The wording can differ from the worked example, but the facts and constraints must agree. If you cannot access this service, use another text assistant available to you; account requirements and limits may differ.
Your starting prompt
Compare the five supplied features, show unknown information separately, and explain whether either product meets each buyer’s stated need. Do not invent prices, quality rankings or a battery option. Use only the supplied facts; mark missing information rather than inventing it. Return written text only. Do not send, publish or change anything in another service.
SAMPLE INPUT
Made-up example for practice. All people, organizations, records and product behavior below are fictional.
Fictional products with approved facts only: Fold lamp: folds flat, USB-powered, 3 brightness settings, 320 g, no battery. Arc lamp: fixed shape, mains-powered, 2 brightness settings, 520 g, no battery. Neither has supplied brightness-in-lumens, durability, warranty or price data. Buyer A needs to carry the lamp between desks and has USB power at both desks. Buyer B requires a battery-powered lamp. Need a factual side-by-side text card and a conditional fit note for each buyer. No purchase recommendation based on missing measurements.
02
Compare, correct and save
Compare the answer with the complete sample input and the checks below. All ten supplied product facts are preserved and missing specifications remain unknown. If a fact is missing, changed or invented, paste the correction prompt below into the same chat. Read the revised result again; if it still fails, correct the text yourself before using it. Copy the reviewed result into a new note or text document. Keep real publication, decisions and sending for a separate human review.
Your starting prompt
Check your previous answer against the SAMPLE INPUT in my first message. Test each point below. For a failure, show the problem and then return a complete corrected answer; for a missing source fact, keep it explicitly unknown. Do not invent a successful check.
- All ten supplied product facts are preserved and missing specifications remain unknown.
- Buyer B is told neither option meets the requirement.
- More brightness settings are not treated as proof of greater light output.
03
Optional: use your own facts
Open a new chat. Copy the prompt below and replace [PASTE YOUR INPUT HERE] with your own non-sensitive source text, facts and limits for this task. Include any desired headings, count or length. Send the whole message. Expect the same kind of written result, using your facts. Check every source fact and limit yourself; the example’s names and totals do not apply. If a detail differs, show the exact mismatch and ask for a complete correction. Save the checked draft before any separate decision to use or send it.
Your starting prompt
Compare the supplied features and buyer needs below. Show known facts and unknown information separately, and explain which stated needs each product meets. Do not invent prices, quality rankings, capabilities or availability.
Use only my input. Ask for information needed to finish rather than guessing. Return written text only; do not send, publish, book, submit or change another service.
MY INPUT
[PASTE YOUR INPUT HERE]
Optional: improve the result
Turn the card into a customer question
Identify the one missing detail most likely to change the fit decision. This extension uses the worked example. Return to that example chat, or paste its input and your checked example answer into a new chat first. Do not apply its sample values unchanged to your own input.
Advanced prompt
For Buyer A, write two useful follow-up questions about actual lighting needs and power use. Explain why each answer matters without inventing product measurements. Keep the same SAMPLE INPUT from my first message unless I explicitly replace it.
Show, then try
See the shape of the result.
This input is synthetic. The output is a written illustration of the intended result, not a verified AI-tool run.
01 / The starting point
Synthetic input
Made-up example for practice. All people, organizations, records and product behavior below are fictional.
Fictional products with approved facts only: Fold lamp: folds flat, USB-powered, 3 brightness settings, 320 g, no battery. Arc lamp: fixed shape, mains-powered, 2 brightness settings, 520 g, no battery. Neither has supplied brightness-in-lumens, durability, warranty or price data. Buyer A needs to carry the lamp between desks and has USB power at both desks. Buyer B requires a battery-powered lamp. Need a factual side-by-side text card and a conditional fit note for each buyer. No purchase recommendation based on missing measurements.
Copies text only. For image or file tasks, use the source files named in the steps too.
Worked example written for this guide, not output recorded from a live AI session.
Fold lamp
- Shape: folds flat
- Power: USB
- Brightness settings: 3
- Weight: 320 g
- Battery: none
Arc lamp
- Shape: fixed
- Power: mains
- Brightness settings: 2
- Weight: 520 g
- Battery: none
Not supplied for either: price, measured light output, durability and warranty.
Buyer A: Fold matches the stated USB availability and has a folding shape and lower supplied weight. Its actual light output still needs checking against the buyer’s needs.
Buyer B: Neither meets the battery-power requirement.
These checks use the worked example and its particular facts. With your own material, check your actual names, numbers, sources and rules; do not reuse the sample’s values as the answer.
Unsaved checks stay in this tab and reset when you reload. If you choose Save guide, its current example checkmarks are kept in this browser when storage is available.
!
A few things to watch for.
Feature count is not the same as quality or suitability.
Do not fill gaps using assumptions about similar-looking real products.