Evidence-backed briefs: PRDs fail because theyre claims without citations
A brief you can defend: claim -> evidence -> pattern -> scoped change -> measurable acceptance criteria.
Most PRDs fail for a simple reason:
they are claims without citations.
"Users want X." "This will reduce churn." "Priority is obvious."
Based on what?
A brief you can defend
A brief I trust has this structure:
claim -> evidence -> pattern -> scoped change -> measurable acceptance criteria.
The difference is accountability.
Evidence-backed brief template (copy/paste)
FOCUS QUESTION: CONTEXT (1-3 lines):
EVIDENCE (with links):
- E1:
- E2:
- E3:
PATTERNS:
- P1 (frequency + severity):
- P2:
- P3:
HYPOTHESIS: PROPOSED CHANGE: ACCEPTANCE CRITERIA: RISKS: WHAT WE'LL CHECK (deploy + 7d, +14d):
One rule
If you can't link to the evidence, don't claim it.
This forces you to:
- stop overfitting to loud users
- stop shipping based on vibes
- stop restarting discovery every week
Where ContractSpec Studio fits
ContractSpec Studio is built to generate evidence-backed briefs with citation chains, then turn them into Change Cards and Impact Reports.
If you want sample outputs:
- https://www.contractspec.studio/
If you want a filled example, here are sample outputs.
If you want a filled example, here are sample outputs.Related articles
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Impact Report template: Breaks vs Must-change vs Risky
A practical Impact Report template to make blast radius explicit before you ship.
Change Card template: the smallest spec engineers trust
PRDs are too big. Tickets are too small. Use a Change Card: intent -> AC -> surfaces -> verification -> rollout.