{
  "id": "si-symbol-review-2026-10-22",
  "promptId": "daily-v4-si-long-symbols",
  "reviewedAt": "2026-10-22T18:49:47.282Z",
  "reviewer": "Codex source and validator review; not an independent human audit",
  "answerVersion": "a1-8d0bc309",
  "decision": "Retain the published question, accepted answers, aliases and fixed scores. Add explanatory feedback and an untimed lesson.",
  "statistics": {
    "from": "2026-09-22",
    "through": "2026-10-21",
    "timezone": "UTC",
    "allRounds": 381,
    "diagnosedRounds": 265,
    "excludedLegacyRounds": 116,
    "measured": 265,
    "accepted": 35,
    "timeouts": 196,
    "skipped": 34,
    "rejected_rounds": 162,
    "rejected_attempts": 324,
    "recovered": 6
  },
  "reports": {
    "reviewed": 12,
    "outsideRule": 10,
    "needsEvidence": 2,
    "confirmedMissingAnswers": 0,
    "scope": "Reports available at review time, including reports received after the diagnostic window. Private report text and identifiers are excluded."
  },
  "sources": [
    {
      "name": "BIPM: SI base units",
      "url": "https://www.bipm.org/en/measurement-units/si-base-units"
    },
    {
      "name": "BIPM: SI prefixes",
      "url": "https://www.bipm.org/en/measurement-units/si-prefixes"
    }
  ],
  "limitations": [
    "Only counts of rejected attempts are stored for normal rounds, not a complete log of rejected input text. Submitted reports are a self-selected subset.",
    "The diagnostic subset excludes 116 older rounds without complete diagnostic fields. It must not be presented as the acceptance or timeout rate of all 381 rounds.",
    "Scope confusion is a plausible contributor, not an established cause of every timeout. These data predate this lesson release."
  ],
  "nextReview": "Compare later rounds for this exact question only once there are at least 20 newly diagnosed rounds; inspect timeout, rejection and recovery rates together. A later rules, alias or score correction must use a new question ID and new answer fingerprint, with the old edition preserved."
}