Why Light Can Share a State but Matter Cannot

Natural Evolution of Actuality (NEA) begins with independently lawful abstract parental responsibilities and primitive consequential joining. Its established constructive chain distinguishes fermionic antisymmetry from photon transversality : the antisymmetric projector prohibits double occupation of an identical complete fermion state, while the transverse projector admits the transverse propagation modes of a developed electromagnetic field. We reconstruct these source-owned equations and derive their distinct mathematical responsibilities without treating either as an additional primitive force. The fermionic wedge-Gram theorem equates the squared norm of an antisymmetrized multi-fermion state to the Gram determinant of its single-particle inner products, yielding a quantitative overlap obstruction and a combinatorial rank bound for identical fermions in independent complete one-particle modes. A selected transverse photon carrier instead has two physical polarisation directions at fixed nonzero momentum; its symmetric multi-photon sector scales linearly in dimension and allows arbitrarily repeated occupation of the same mode. A joint-projector theorem proves that antisymmetric matter organisation and transverse bosonic propagation can be simultaneously admitted and calculates the exact combined rank for a selected two-fermion, multi-photon carrier. A new conditional transition identity combines Pauli blocking, photon-mode admissibility, and Bose occupation, expressing the squared transition amplitude as a direct product of coupling strength, initial fermion occupation, final state availability, and stimulated bosonic enhancement. Furthermore, we distinguish free-radiation gauge constraints from physically retained Shadows, and analyse how admissible events acquire Records and affect future sufficiency. These are exact consequences of selected mature representations, rather than a derivation of exchange statistics from the primitives, a universal spin–statistics theorem, or a particular atomic emission rate. The NEA contribution is a source-faithful constructive synthesis, showing that different physically realised constraints can jointly determine the organisations and transitions that remain possible.