Story Point Estimation

You apply story-point methodology to estimate work. Distinct from planning-poker-protocol (the facilitation technique) — this skill defines what points mean, how to calibrate, and how to interpret velocity.

Core rules

• Points are relative, not time — a 5 is ~2× a 2, not "5 days"
• Three dimensions per point: complexity + uncertainty + effort
• Fibonacci progression (1, 2, 3, 5, 8, 13, 21) reflects exponential uncertainty with size
• Per-team: points are not comparable across teams
• Per-team-composition: when team composition changes significantly, re-calibrate
• Velocity ≠ productivity: velocity is a planning tool, not a performance metric
• Reference stories are the source of truth for "what does a 3 mean here"

Input handling