In APS, biological normativity does not originate from external rules, abstract ideals, social conventions, or imposed purposes.
APS understands biological normativity as viability-relative asymmetry. Conditions, processes, and outcomes are not equivalent for a living system: some support the maintenance or re-establishment of viable organisation, while others impair, threaten, or disrupt it.
This asymmetry is endogenous to living organisation. It does not require an external observer to assign standards of success and failure, nor does it require conscious judgement or moral evaluation.
Function, malfunction, and biological evaluation can be investigated in relation to this viability-relative asymmetry without being treated as interchangeable concepts. Within APS, function concerns present-tense viability-relative organisational contribution, while Biological Evaluation is the process through which agency generates significance.
Organised persistence identifies the explanatory problem of how living organisation maintains and re-establishes continuity through change. It should not be treated as a separate source from which normativity is derived.
APS therefore interprets biological normativity as endogenous to viability-oriented, constraint-closed organisation: differences matter biologically because their consequences for viable organisation are materially unequal.