A practical lab · about 17 minutes
Interactive learning lab
Prompting techniques + Building with prompts · guide 5 of 8
The product instruction-layer lab
0/6 core signals
Saved only on this device
System lab · BriefingScene 1 / 7
Persistent truth belongs above the request
System or developer instructions define product behaviour; user turns carry the changing job and data.
Persistent truth belongs above the request ready.
Predict
Inspect
Verify
A useful system prompt establishes role, scope, guardrails and output behaviour for every request. Variable documents, questions and customer data remain in the user layer. The prompt is product code: version it and assume users may eventually see it.
Stable behaviour in the instruction layer.
Variable data in the request layer.
No secrets in either prompt.