A.19.SelectorMechanism:9 - Consequences

Benefits

• Preserves correctness under partial orders by making set‑valued outcomes first‑class.
• Eliminates a major source of decision drift: hidden thresholds, hidden weights, and silent scalarization.
• Improves replayability and teachability: one governing pattern states selection semantics and guards, while dated work and direct relations preserve each realized use.
• Supports evolvability: new method families and selection styles can be wired without changing the kernel signature.

Costs and trade-offs

• Selected-set results can require explicit downstream handling when a single decision is needed.
• Strict evidence discipline increases early degrade or abstain until criteria and evidence policies are explicit.
• Teams must invest in explicit criteria records instead of relying on implicit conventions.