What a Theory Must Accomplish

This paper states without evasion what a fundamental physical theory must accomplish. A theory is not foundational because it retrospectively organizes many isolated findings, but only if it identifies a primary structure from which different classes of phenomena emerge causally, in closed form, and in a testable way. Within the current Phoenix Axiom, this standard is sharpened into five binding criteria: self-explanatory basic structure, determinism, axiomatic closure, hard testability, and minimal ontological load. Tensor Field Dynamics therefore does not present itself as a mere alternative description, but as a unified field-mechanical foundational architecture for gravitation, optics, cosmology, and coherent microphysical processes. The paper is formulated as TFD-internally audit-proof and maintains a strict separation between axiom, derivation, comparison, interpretation, and open programme of examination. It is therefore not a polemical counterstatement, but a precise standard for what fundamental physics must be measured against at all.