Zero-Entropy Bootstrap and the Fine-Structure Constant

"Topological supersymmetry," a newly recognized feature of the zero-entropy $S$-matrix bootstrap, leads to a zero-entropy coupling constant $g_0$ whose order of magnitude is controlled by the relation $8N_g(8\mathrm{}{N}_g-1)\frac{{g_0}^2}{16{\pi }^2}\sim 1$, where $N_g=4\mathrm{}$ is the number of quark generations. A unification principle, suggested by electromagnetic extension of topological theory and encouraged by this relation, is $g_0=e$. The posture of this unifying $S$-matrix condition with respect to field-theoretical grand unification is discussed.