@article{chang2026risk_bounds_physical_ai,
  title        = {Risk Bounds for Physical {AI}: Decision Ambiguity and Model Incompleteness},
  author       = {Edward Y. Chang},
  year         = {2026},
  month        = {September},
  journal      = {Zenodo Preprint},
  doi          = {10.5281/zenodo.23029984},
  url          = {https://zenodo.org/records/23029984},
  note         = {Preprint. Work in progress.}
}