Evidence Tiers

Tier taxonomy

Accepted tiers

• single_model_confirmed
• cross_model_confirmed

Intermediate tiers

• causal_plus_robustness
• causal_tested_unstable
• suggestive

Rejected tier

• rejected

How tiers are produced

Tiers are derived from gate outcomes, slice requirements, and optional transfer evidence.

They are not manual labels.

Interpretation guidance

• Use tiers to summarize evidence quality.
• Use gate diagnostics to determine next experiments.
• Treat intermediate tiers as prioritized follow-up states, not terminal outcomes.

Reporting recommendation

When publishing any tier summary, include:

• failed gate decomposition
• not-evaluated decomposition
• protocol version/hash
• deterministic rerun status