A marker is defined not by the phenomenon it names but by the exclusive mechanism it isolates within that phenomenon, giving each concept a single governing function rather than a diffuse field of connotation. This constraint allows markers to combine: because each operator does one thing precisely, several can be applied jointly to a situation without semantic collision, generating propositions unavailable to any single term. The marker also carries a stable, citable address, so that its meaning can evolve through use while its identity remains locatable across contexts. The approach treats conceptual precision and combinatorial capacity as mutually reinforcing rather than opposed, arguing that a vocabulary becomes powerful in proportion to how disciplined, not how expansive, its individual units are.