C.18.1:1 - Problem frame

Teams often say a method “scales” without disclosing which resources, across what window, and how outcomes respond (convex rise → knee → plateau). Without that, parity is skewed (unequal budgets, unmatched windows), coverage/illumination report-metrics leak into dominance, and “knees” are found late. SLL supplies a notation‑independent lens to make scale behaviour explicit and comparable.