{
  "name": "Possible Matter: The Possible Engine",
  "url": "https://possiblematter.com/",
  "author": "Possible Matter, through DrMatcha Studio",
  "rights": "All rights reserved.",
  "relationship": "An emerging long-horizon venture, growing from the exploratory work of DrMatcha Studio.",
  "conventions": {
    "scale": "Register labels are illustrative conventions. Compressed views are marked compressed; mass known only from its gravity is marked inferred.",
    "evidence": {
      "demonstrated": "A specific process or result has been shown; the page may simplify it.",
      "active-research": "Real work exists; important questions of performance, scale, or deployment remain.",
      "extrapolation": "An imagined system that combines known principles beyond demonstrated scale.",
      "speculative": "A mechanism or capability without demonstrated feasibility, or fictional by design.",
      "open-question": "The evidence is demonstrated; the explanation is not known."
    }
  },
  "chapters": [
    { "id": "threshold", "title": "The unresolved instrument", "register": "about 1 m", "summary": "A closed instrument opens: a shell withdraws on guides, rings fold out, three apertures align, and a seed is revealed.", "evidence": ["speculative"], "sources": [] },
    { "id": "matter", "title": "Architecture below the surface", "register": "about 1 cm", "summary": "The seed's graded lattice is sectioned, loaded, and compared with two other architectures of the same substance.", "evidence": ["active-research", "speculative"], "notes": "Most of a proton's mass comes from the binding energy of quarks and gluons. States of matter beyond the familiar four have been made in laboratories.", "sources": ["https://www.nobelprize.org/prizes/physics/2001/summary/", "https://www.nobelprize.org/prizes/chemistry/2011/summary/"] },
    { "id": "fabrication", "title": "A machine that makes the next machine", "register": "about 10 m", "summary": "A blank is located, held, built up, measured, and released as a structural module.", "evidence": ["demonstrated", "extrapolation"], "sources": ["https://www.esa.int/ESA_Multimedia/Images/2024/09/First_metal_part_3D_printed_in_space"] },
    { "id": "moon", "title": "Industry that belongs to its place", "register": "about 1 km", "summary": "An imagined lunar district laid out by dust, heat, and a two-week night.", "evidence": ["demonstrated", "extrapolation"], "sources": ["https://www.nasa.gov/centers-and-facilities/nasa-successfully-extracts-oxygen-from-lunar-soil-simulant/"] },
    { "id": "computation", "title": "Structure for uncertainty", "register": "about 1 m", "summary": "Nested shields open around a dilution refrigerator; most of the machine protects a small active region.", "evidence": ["active-research", "speculative"], "sources": ["https://www.nist.gov/quantum-information-science/quantum-computing-explained"] },
    { "id": "habitats", "title": "Systems that can be repaired", "register": "about 500 m", "summary": "A habitat ring in which a worn module is released and a new one seated on the same joint.", "evidence": ["speculative"], "sources": [] },
    { "id": "distance", "title": "The sea of light", "register": "about 1 AU to the observable universe, compressed", "summary": "A message leaves a node and is still travelling as the view widens.", "evidence": ["speculative", "extrapolation"], "notes": "Light-travel delay is real; the network is imagined. Andromeda is about 2.5 million light-years away.", "sources": ["https://science.nasa.gov/photojournal/our-neighbor-andromeda/"] },
    { "id": "unseen", "title": "The unseen", "register": "galactic to cosmological; inferred where mass is drawn from its gravity", "summary": "Rotation curves, lensing, the accelerating expansion, and gravity itself, drawn as evidence with the gap named.", "evidence": ["demonstrated", "open-question"], "notes": "About 5% ordinary matter, 27% dark matter, 68% dark energy. The nature of dark matter and dark energy is not known. No quantum theory of gravity has been tested.", "sources": ["https://www.esa.int/Science_Exploration/Space_Science/Planck", "https://science.nasa.gov/universe/dark-matter-dark-energy/", "https://www.nobelprize.org/prizes/physics/2011/summary/", "https://www.ligo.caltech.edu/detection", "https://eventhorizontelescope.org/"] },
    { "id": "continuity", "title": "The instrument that remembers", "register": "about 1 m", "summary": "An archive whose outer form is the seed's opens into nested layers of pictures, words, diagrams, units, and data, and closes again.", "evidence": ["speculative"], "sources": [] }
  ]
}