Reusability / YAGNI
Kind: tension
Record: tension:reusability-yagni
Canonical: Schema
"reusability" (structural-core layer) is traded against "YAGNI" (structural-core layer) — a principle cannot be scope-separated from a quality, metric, or cost it competes with; resolve by measuring "YAGNI" and choosing an explicit operating point.
Listed in Tensions, after Composition Over Inheritance / Simplicity for Trivial Reuse and before Reusability / Over-Generalization.