The Mechanism · Gated-generation receipt

gen-in-3-4-sentences-explain-flood-frequency-analysis-state-any-a2fb

stable pending witness
2026-05-29 08:08:12 UTC · anthropic/claude-sonnet-4-5

Prompt

In 3-4 sentences, explain flood frequency analysis. State any key formula.
74 chars

Generation

# Flood Frequency Analysis Flood frequency analysis is a statistical method used to estimate the probability of flood events of various magnitudes occurring in a given time period. It involves analyzing historical flood data (typically annual peak flows) to establish a relationship between flood magnitude and recurrence interval or exceedance probability. The key formula is: **T = 1/P** where T is the return period (recurrence interval) in years and P is the annual exceedance probability (the probability that a flood of given magnitude will be equaled or exceeded in any year). This analysis allows engineers to design hydraulic structures and floodplain management strategies based on acceptable risk levels, such as designing for a 100-year flood (P = 0.01 or 1% annual chance).
25 tokens in · 171 tokens out · 5632 ms · $0.0026

The four gates

RED
pass
no disqualifying input patterns detected
FLOOR
pass
output above protective minimum; no mismatches
WAY
pass
no declared way_path (Way check NA); no coercion language
EXECUTION
deferred
no witnesses available (Witness Roll not yet constituted)

Verifier results

scripture_anchors NOT_APPLICABLE
0 Scripture citation(s) extracted
theology_doctrine NOT_APPLICABLE
no doctrine keyword patterns detected

Metrics

Total latency
5637.7 ms
Base LLM
5632.0 ms
Verifiers
0.2 ms
Gates
0.0 ms
Cost
$0.0026

Trail

08:08:12 received prompt_chars=74 verifiers=['scripture_anchors', 'theology_doctrine']
08:08:12 red_gate decision=pass reason=no disqualifying input patterns detected
08:08:18 base_llm_call model=anthropic/claude-sonnet-4-5 tokens_in=25 tokens_out=171 latency_ms=5632.0 cost_usd=0.0026
08:08:18 verifier:scripture_anchors verdict=NOT_APPLICABLE summary=0 Scripture citation(s) extracted
08:08:18 verifier:theology_doctrine verdict=NOT_APPLICABLE summary=no doctrine keyword patterns detected
08:08:18 floor_gate decision=pass reason=output above protective minimum; no mismatches
08:08:18 way_gate decision=pass reason=no declared way_path (Way check NA); no coercion language
08:08:18 execution_gate decision=deferred reason=no witnesses available (Witness Roll not yet constituted)
08:08:18 signed hash_algo=sha256 hash=sha256:020a7e39a1734193ca60543c3850f4a05468267a481569c789e8ba4cffb048ed

Content hash

sha256:020a7e39a1734193ca60543c3850f4a05468267a481569c789e8ba4cffb048ed

SHA256 over the canonical JSON (excluding this field). Tamper detection. Ed25519 signing planned for v2 once the operator’s signing key is provisioned on disk.

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