Backward Compatibility / Cleanup / Simplification
Kind: tension
Record: tension:backward-compatibility-cleanup-simplification
Canonical: Schema
"backward-compatibility" (contracts-core layer) is traded against "Cleanup / Simplification" (contracts-core layer) — a principle cannot be scope-separated from a quality, metric, or cost it competes with; resolve by measuring "Cleanup / Simplification" and choosing an explicit operating point.
Listed in Tensions, after Invariant / Flexibility and before Forward Compatibility / Strong Validation.