{"slug": "ptolemaic-and-llm-architecture-compared-in-3d", "title": "Ptolemaic and LLM Architecture Compared (In 3D)", "summary": "Michael Mangialardi's essay compares the Ptolemaic model of the cosmos with the architecture of large language models, drawing parallels between medieval celestial spheres and transformer layers. The piece explores how both systems use nested, hierarchical structures to process and represent information, culminating in a fixed, unchangeable realm at the top.", "body_md": "# The Celestial Mirror\n\nThe Ptolemaic architecture of the cosmos — Earth, the seven planetary spheres, the Stellatum, the Primum Mobile, and what lies beyond. After Michael Mangialardi’s essay on medieval cosmology and LLM architecture.\n\n[Read the paper ↗](https://michaelmangialardi.substack.com/p/the-celestial-mirror-how-medieval)\n\nPlanet maps © [Solar System Scope](https://www.solarsystemscope.com/textures/) (CC BY 4.0)\n\nThe Celestial Mirror\n\n“…a series of hollow and transparent globes, one above the other…”\n\n— C.S. Lewis, The Discarded Image\n\nAscend from the motionless Earth through the seven planetary spheres to the Stellatum and the Primum Mobile — up to the one boundary no geometry can cross. Then toggle the view, and climb the same tower as a transformer: token to layer to fixed constellation, with the very same line drawn at the top.\n\n[Read the paper: The Celestial Mirror ↗](https://michaelmangialardi.substack.com/p/the-celestial-mirror-how-medieval)", "url": "https://wpnews.pro/news/ptolemaic-and-llm-architecture-compared-in-3d", "canonical_source": "https://celestial-llm-mirror.vercel.app/", "published_at": "2026-07-15 02:29:14+00:00", "updated_at": "2026-07-15 02:47:54.909894+00:00", "lang": "en", "topics": ["large-language-models", "artificial-intelligence"], "entities": ["Michael Mangialardi", "C.S. Lewis"], "alternates": {"html": "https://wpnews.pro/news/ptolemaic-and-llm-architecture-compared-in-3d", "markdown": "https://wpnews.pro/news/ptolemaic-and-llm-architecture-compared-in-3d.md", "text": "https://wpnews.pro/news/ptolemaic-and-llm-architecture-compared-in-3d.txt", "jsonld": "https://wpnews.pro/news/ptolemaic-and-llm-architecture-compared-in-3d.jsonld"}}