Paper 13 established the zero point of the E=mc Thought Principle: the static singularity E ≡ 0, in which the entry path for Δ is closed and no process of thought generation can operate. It further identified the conditions under which pseudo-static singularities collapse back into dynamic process. What remained unaddressed was the positive question: not when Δ fails to operate, but what conditions cause it to be generated. The collapse of closure is necessary for Δ to become active, but not every collapse produces Δ. This paper provides a structural account of that distinction. By introducing a two-variable dynamical system in which the structural state X and the fluctuation Δ are mutually constitutive, the paper derives the bifurcation condition under which Δ persists rather than decaying to zero. The parameters of the dynamical system are proposed — as a motivated hypothesis rather than a formal derivation — to correspond to the established parameters of the E=mc Thought Principle: m, c, η, ρᵢ. Under this correspondence, the bifurcation condition translates into a new relational quantity, R = ρᵢc / mη, the first explicit measure of dynamical regime in the E=mc framework. Where E measures the magnitude of thought energy generated, R measures whether the structural conditions for sustained generation are met. Music is examined as the first concrete verification domain, and three further domains — philosophical argument, visual art, and scientific hypothesis formation — are considered as directions for generalisation.
Katsutoshi Mayumi (Wed,) studied this question.