build-current-reality-tree

Purpose

Build a sufficient-cause Current Reality Tree linking undesirable effects to a small root set.

Input contract

required: [undesirable_effects, causal_evidence]
optional: [candidate_causes, system_boundary]
constraints: [each AND/OR connection requires a stated causal rationale]

Procedure

1. Normalize undesirable effects into observable statements.
2. Connect effects with sufficient-cause relationships, marking AND requirements.
3. Trace converging chains to a small root set and test each link.

Output contract

produces: [current_reality_tree, root_cause_candidates, causal_rationale]
delta_fields: [findings, assumption_updates, uncertainties, decisions]

Quality gates