# Observer Pattern / Ordering

> "observer-pattern" (design-patterns-core layer) is traded against "Ordering" (causality-core layer) — a principle cannot be scope-separated from a quality, metric, or cost it competes with; resolve by measuring "Ordering" and choosing an explicit operating point.

Record: `tension:observer-pattern-ordering`
Kind: tension
Canonical: https://banes-lab.com/ontology/schema#tension-observer-pattern-ordering

## tensions-with

- [Observer Pattern](https://banes-lab.com/records/arch/observer-pattern.md)
- [Ordering](https://banes-lab.com/records/lex/ordering.md)