{
  "id": "palimpsest-news:board-alarm",
  "slug": "board-alarm",
  "url": "https://palimpsest.info/news/board-alarm/",
  "signal_id": "board-alarm",
  "headline": "Multiple layers elevated together in the latest board synthesis",
  "dek": "The merged board read remains a measure of cross-signal movement, not a verdict about any single cause.",
  "section": "command",
  "order": 1,
  "type": "analysis",
  "priority": "lead",
  "status": "live",
  "published_at": "2026-08-24T15:55:45Z",
  "modified_at": "2026-08-24T15:55:45Z",
  "claim_fingerprint": "sha256:6c4f9eea6db993875ab5d8c6861062fd0119abfa41943d51170fb6a402105a64",
  "metric": {
    "label": "board e-value",
    "value": 8.79,
    "unit": "e-value",
    "denominator": {
      "label": null,
      "value": null
    }
  },
  "claims": [
    {
      "type": "observation",
      "statement": "Upstream board reports: MULTI-LAYER CO-MOVEMENT: content + network elevated together. 39 of 39 configured sources report; 28 are live. Health qualifiers: 5 degraded, 6 stale. The board-wide e-value is 8.79; the predeclared board alarm threshold is 20."
    }
  ],
  "evidence": {
    "url": "https://palimpsest.info/readings/board-alarm-latest.json",
    "input": {
      "filename": "board-alarm-latest.json",
      "sha256": "a2bb5631be1941601f894b83e6dad0abbe5a98fa3bde86316a4dc596dabe15fa",
      "bytes": 10258
    },
    "source_timestamp": "2026-08-24T15:55:45Z"
  },
  "method": {
    "summary": "per-signal two-sided conformal Shiryaev-Roberts e-detectors, except the model layer: refusal_churn is the v2 refusal suite's own anytime-valid mixture e-process over adjacent-run flip counts (one per model, calibrated on a burn-in, valid under unlimited peeking), panel-merged by arithmetic mean — a valid e-value at any stopping time, which is all the machinery below requires. e-BH (arXiv:2009.02824) at alpha=0.1 selects which signals are reported elevated, controlling FDR under arbitrary dependence; per-layer and board-wide e-values merged by arithmetic mean (arXiv:1912.06116), which is valid for dependent e-values; a layer counts as elevated at merged e >= 20, i.e. at most a 1-in-20 fluke, or when one of its signals alarmed within the last 12 readings",
    "version": null
  },
  "limitations": [
    "A merged e-value measures evidence against no change; it does not identify a common cause for co-movement."
  ],
  "related_signal_ids": [
    "event-flags",
    "coverage-guard",
    "vantage-fusion"
  ]
}