UFI is not searching for a formula but for an engine — a model whose internal observer empirically recovers our world. These principles set the direction of the search and rule out ill-posed models.
A UFI result is a model that generates observable physics from local dynamics accessible to an internal observer. Equations, symmetries, and Lagrangians are languages used to describe the engine, not its foundation. When two descriptions yield the same observable regime, the difference between them is operationally secondary.
Every physical theory is formulated through observations available to an observer inside the system: the observation map O : S → M, the spatial resolution B, and the temporal resolution T_obs. Parameters that do not affect the observable dynamics under any choice of observation scheme are physically unrecoverable. The external perspective is not used as explanation.
Priority goes to parameters and structures that remain stably recoverable under changes of scale, representation, and mode of observation. Absolute quantities without operational distinction are unrecoverable by construction. A theory must preserve predictable invariants under coarse-graining and re-description.
An observer recovers structure only within the bounds of its own model class — cellular automaton, lattice field, agent-based dynamics, spin system, or other. The class is declared in advance, justified explicitly, and compared against alternatives — not retrofitted to the result. A mismatch between model class and observed regime is an error of formulation, not a shortage of data.
The inability to recover a parameter is not a failure of the investigation but a property of the observation system. When distinct engines remain operationally indistinguishable to an internal observer, that fact is recorded as a boundary of recoverability, not as a temporary gap in knowledge. UFI distinguishes the unknown from the structurally underdetermined.
A candidate engine must reproduce observable structure stably, not in a single tuning of parameters. Priority goes to regimes that arise naturally — through local rules, critical states, self-organisation, stable invariants. Fine-tuning without a mechanism is not an explanation.
UFI distinguishes four statuses for any result.
Proven analytically. Example: η(dx) = η(dt) = 0 for any local engine.
Empirically supported across engine classes but not yet proven.
A model whose internal observer reproduces observable structure, but uniqueness is not proven. The default working status until uniqueness is shown.
Neither proof nor candidate yet.
Every UFI result carries a public, timestamped record — arXiv or Zenodo. No preprint, no listing.
Principles define a result. Status defines its kind. Public record defines a claim. UFI filters by all three — not by reputation.
We work outside institutions so this standard cannot be replaced by reputation.
We tested whether an observer embedded inside a simulated world can recover the parameters of the engine generating it.
Absolute scale cannot be recovered in principle. Not "not yet". Never. Proven analytically for any local engine.
ufi.observer/#paper-01
UFI investigates the recoverable structure of physical reality from the position of an internal observer. We accept theorems, regularities, candidate engines, and open questions — inside or outside institutional research.
Archive the work on arXiv or Zenodo, state the claimed status, and send the link.
Idenisov81@gmail.com