{
 "format": "LSC-1",
 "lsc": "LSC-1",
 "edition": "E1",
 "cut": "2026-10-09",
 "name": "THE MODEL CHANGE",
 "handle": "model-change-card",
 "number": "Nº 971",
 "house": "THE INSTRUMENTS",
 "wing": "THE AGENT BENCH",
 "role": "the probes to run when the model changes",
 "tagline": "A fixed set of probes with what each answer must do; a baseline on the model you have; every flip, the length and shape drift, one verdict.",
 "sigil": "◈",
 "hue": "#4A3BC4",
 "punch": "A5FC7D72DD9BBC8B7F6C093C",
 "punch_of": "SKILL.md · sha-256 · first 24",
 "score": 98,
 "tier": "LEGENDARY",
 "layer": "WITNESSED",
 "score_line": "SELFTEST 11/11 · THREE COMMANDS ON THE RECORD",
 "honest_line": "I'm an AI reading a card. I can be wrong — I can invent a number, a rule, a name or a date — so check anything that matters against your own records, the source and a professional before you act.",
 "term": "one purchase · yours to keep · nothing renews itself",
 "free": false,
 "wakes": "a model version changes or is retired, or someone asks if the new one still does the job",
 "loop": [
  "modelchange.py probes · the starter set",
  "replace them with prompts from traffic",
  "baseline · the model you have, judged",
  "compare · the model offered, every flip",
  "read the flipped pairs side by side"
 ],
 "laws": [
  "**The probes are written before the change**, not after; a baseline taken afterwards is a memory.",
  "**Each probe says what the answer must do** — words, shape, length, decline or help — so the judge reads the same thing twice.",
  "**Every flip is named**, pass→FAIL first; a flip is a reason to read the two answers, not a verdict.",
  "**Length and shape are measured**, not felt: the median ratio and the drift count.",
  "**One verdict, written rules.** DRIFTED on any pass→FAIL, a median length outside half-to-double, or shape drift on more than a quarter.",
  "**Words, lengths and shapes, not quality.** The judge reads form; the person reads the pairs."
 ],
 "never": [
  "switch models without the baseline",
  "read a flip as a verdict on the model",
  "trust eight probes as a benchmark"
 ],
 "machine": "scripts/modelchange.py · probes · baseline · compare · selftest",
 "proof": "selftest 11/11 · THREE commands on the record",
 "faces": [
  "card.svg",
  "card-machine.svg"
 ],
 "box": [
  "SKILL.md",
  "CARD.md",
  "TIN.md",
  "START-HERE.md",
  "LICENSE-NOTE.md",
  "THE-CLAUSES.md",
  "MY-LEDGER.md",
  "WITNESS.md",
  "SELFTEST.md",
  "AUDIT.md",
  "MANIFEST.md",
  "HOSTS.md",
  "scripts/modelchange.py",
  "references/THE-DAY-THE-MODEL-CHANGES.md",
  "rules/ (4 doors)",
  "system/ (2 prompts)",
  "mcp/mcp_card.py",
  "card.json",
  "card.svg",
  "card-machine.svg",
  "card.html"
 ],
 "hundred": "Trigger 5 · Machinery 5 · Law 5 · Portability 5 · Proof 5 — 25 of 25 → 98 of 100 · LEGENDARY"
}