14.5 Cross-workflow obstructions

An integrated system exposes failures invisible to each component alone. Representative obstruction types include:

1. Actionability defect. CLIC admits a model-relative causal distinction, or an equivalence class of such distinctions, for which OPTIC has no executable intervention or measurement skill.

2. Utility defect. OPTIC admits a reliable skill, but RELIC cannot find a decision context in which its use improves the declared objective.

3. Explanatory defect. RELIC discovers a reproducible policy failure that no alternative in the current causal sketch explains.

4. Realizability defect. RELIC requests an intervention that the skill theory deems physically, ethically, or operationally inadmissible.

5. Transport defect. A causal repair, skill, and policy compose in the discovery environment but fail under a registered change of regime.

6. Order defect. Two individually useful workflow calls yield incompatible results when their order is reversed.

Some order defects may admit a DIAL interpretation through paired infinitesimal directions. Others arise from finite data acquisition, irreversible action, or conflicting certificates and should not be forced into Lie-bracket language. The meta-sketch records which semantics applies.