{
  "abstract": "QBists insist that theirs is a realist position while denying that the quantum formalism represents a mind-independent world. The insistence is hard to place. The realism debate is throughout a dispute about represented content, so a theory that denies standing in the representation relation appears not to take up a position within that debate at all. This paper examines the most developed attempt to make good on the QBist claim--David Glick's perspectival normative realism--and argues that it fails instructively. Glick seeks the ground of the Born rule's objectivity among states of affairs and construes an agent's perspective as a location within an already-constituted world; finding no state of affairs fit to bind every agent at once, he must book the ground as brute. Phenomenology supplies the third thing his picture lacks. A horizon is not a position within the world but the condition under which a world is given. Read as an agent's weighting--her curvature--of such a horizon, the quantum state is neither a defective description nor a brute posit, and the Born rule articulates the invariant lawfulness by which any sense confers a curvature at all.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.22159",
  "author_total": 1,
  "authors": [
    {
      "name": "Harald A Wiltsche"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/7rgxk5sjwbkhq.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.22159",
  "fulltext_url": null,
  "id": "7rgxk5sjwbkhq",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.22159",
  "language": null,
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "physics.hist-ph"
    ],
    [
      "arxiv",
      "quant-ph"
    ],
    [
      "openalex",
      "3107|Quantum Mechanics and Applications"
    ]
  ],
  "openalex": "W7213995685",
  "pdf_url": "https://arxiv.org/pdf/2609.22159",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-01",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/7rgxk5sjwbkhq.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:23:19Z",
      "native_id": "2609.22159",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.22159"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
    }
  ],
  "title": "The Limit and Its Ground. QBism, Scientific Realism, and the Born Rule",
  "title_text": "The Limit and Its Ground. QBism, Scientific Realism, and the Born Rule",
  "type": "preprint",
  "updated_at": "2026-10-30T12:23:19Z",
  "url": "https://research.draconitic.com/paper/7rgxk5sjwbkhq",
  "venue": "arXiv",
  "versions": []
}