{
  "annotation_id": "d18edb80-1cc8-4d99-b69f-f115891f9bd6",
  "date_created": "2026-03-02T18:02:00.112000Z",
  "date_modified": "2026-03-02T18:02:00.112000Z",
  "file_hash": "6f34c3914e886df0be317a10b2b8b839ce12d2f3d6bab55d06c7ea36de35b85e",
  "private": false,
  "record": {
    "abstract": "We expand on a recent development by Hardy, in which quantum mechanics is\nderived from classical probability theory supplemented by a single new axiom,\nHardy\u0027s Axiom 5. Our scenario involves a `pretend world\u0027 with a `pretend\u0027\nHeisenberg who seeks to construct a dynamical theory of probabilities and is\nlead -- seemingly inevitably -- to the Principles of Quantum Mechanics.",
    "arxiv_id": "quant-ph/0307121",
    "authors": [
      "Ian Duck"
    ],
    "categories": [
      "quant-ph"
    ],
    "title": "Discovering Quantum Mechanics Once Again",
    "url": "https://arxiv.org/abs/quant-ph/0307121"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "3fb86544-c196-4b36-a936-1a8ad59035da",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}