Systems, Boundaries, and Re-Identifiability

Function in corpus

Load-bearing identity mechanics for all lineage, drift, and collapse analyses.

Details

Summary This paper provides a structural account of systemhood, boundaries, and identity persistence strictly downstream of Informational Ontology. It rejects substance‑based individuation and intrinsic “hard edges” while preserving the reality of systems and the legitimacy of re‑identification practices used in science and everyday reasoning. A **system** is treated as a region of relational organization whose internal constraints cohere sufficiently to remain distinguishable under perturbation. Systemhood does not require fixed material composition, essential properties, or sharply bounded containers; it requires constraint coherence that maintains organizational distinguishability across change. A **boundary** is analyzed as an emergent zone of constraint transition. Boundaries are not metaphysical borders and not arbitrary observer impositions; a boundary exists where internal organization selectively filters interaction with its surroundings—regulating perturbations through the system’s structure. **Identity persistence** is grounded in continuity of structural invariants rather than material sameness or essences. Identity tolerates variation and replacement; it fails when organizational continuity is disrupted beyond recovery. This framing is designed to block common collapse routes: that non‑sharp boundaries imply non‑existent systems, or that identity without essence collapses into mere naming convention. **Re‑identifiability** is defined as structural availability for reference across time and change: a system is re‑identifiable when its organization constrains future states in continuity with prior organization. Re‑identification succeeds when structural continuity succeeds; failure is a real loss of structure rather than a purely epistemic or purely conventional breakdown. Finally, the paper distinguishes **context sensitivity** from relativism: contexts select which structural features matter for a given tracking task, but they do not invent systems. The result is a constraint‑based account that preserves real systems, real boundaries, and real persistence without importing intrinsic essences or sharp metaphysical individuation. • Key move: That systemhood, boundaries, and identity are all real without being intrinsic or absolute. • Corpus role: central for everything downstream that involves identity under change. • Scope note: Without this, every downstream concept that involves a system doing something over time - lineage, drift, degradation, recovery, vulnerability - is undefined.