This paper formulates the structural requirements that a Theory of Everything must satisfy, based on rigorous definitions of information and operations. Starting from minimal axioms of information I and operation F*, it derives causal structure from cognitive accessibility and enumerates nine structural requirements including dimensional unification (all dimensions expressible as Lⁿ) and scale symmetry (scale homogeneity of all equations).
Noriaki Kihara (2026) studied this question.