Polymorphism / Traceability
Kind: tension
Record: tension:polymorphism-traceability
Canonical: Schema
"polymorphism" (structural-core layer) is traded against "Traceability" (observability layer) — a principle cannot be scope-separated from a quality, metric, or cost it competes with; resolve by measuring "Traceability" and choosing an explicit operating point.
Listed in Tensions, after Liskov Substitution Principle (LSP) / Narrow Specialized Behavior and before Event-Driven Architecture / Debuggability.