Mitchell's Principle of Constraint-First Unification: relations, never values

A theory of everything predicts relations, never values. The exact content of the flux sector is exhausted by one constraint — the D3 tadpole, the unique duality invariant — together with topological labels and counting (nineteen, the Standard Model orbit-space dimension). And there is no selection: not exact (a no-go theorem), not statistical (the flux measure is flat), not cosmological. The principle reduces to one equation: the invariant ring of the flux is C[N] with N = F^T J H. Four falsifiers would kill it.