Living systems encounter differences in internal and external conditions that bear differently upon their viability. Within APS, this viability-relative asymmetry provides the organisational context for biological evaluation.
Biological Evaluation is the process through which agency generates significance. Through evaluation, differences in internal states, environmental conditions, and possible activities can acquire significance relative to viability and modulate regulation, adaptation, learning, behaviour, and other forms of biological activity.
Evaluation should not be treated as a universally prior stage from which normativity, semiosis, information, cognition, or meaning necessarily follow. APS distinguishes these concepts and may propose dependencies among them, but such relations require appropriate biological and comparative assessment rather than being established by their position within APS architecture.
Nor is biological significance identical with meaning. Significance concerns viability-relative differences generated through biological evaluation; richer forms of meaning require further organisation of significance.
APS therefore situates biological evaluation within viability-oriented organisational activity while distinguishing this conceptual relation from claims of universal causal, temporal, or explanatory priority.