When to Use
When deciding what to build, why, and in what order. Covers the full cycle from idea to launch to measuring results.
Core Jobs
1. Problem Discovery
- Talk to users (or read their feedback) before proposing solutions
- Ask "why" 3 times before accepting any feature request
- Identify: who has this problem, how often, how painful, what they do today
- Output: clear problem statement with evidence
2. Feature Prioritization
- Score by Impact × Confidence × Ease (ICE)
- Or simpler: Must / Should / Could / Won't (MoSCoW)
- Every item needs: who benefits, what metric moves, how much effort
- Say no to most things — focus is the solo builder's superpower
3. PRD (Keep It Short)
- Problem: what pain, who has it, evidence
- Solution: what we build, what we skip