APS Box — What Biological Classification Tracks in APS

Biological classification in APS does not identify fixed natural kinds or timeless essences.

Instead, it tracks patterns of viability-oriented organisation and their continuity across time.

Living systems are not static entities but ongoing processes. What is classified are therefore not immutable types, but historically continuous, processually maintained forms of organisation.

Within this framework:

• Biological individuals are units of viability-oriented organisation
• Processual individuals are those units understood as continuous through time via ongoing self-maintenance
• Species name historically continuous lineages of such organisation
• Taxa are classificatory groupings that reflect patterns of similarity and divergence within these lineages

These categories are not ontologically privileged levels of reality. They are explanatory tools that track how living organisation persists, differentiates, and transforms.

Classification in APS is therefore neither arbitrary nor essentialist. It is constrained by the organisation and history of living systems, while remaining sensitive to the purposes of biological explanation.

Key Point. Biological classification in APS tracks the organisation and continuity of living systems—it does not identify fixed essences or privileged categorical levels.