# Ontological Drift
**Domain:** Deep Time / Legal Theory / Institutional Change
**Doc Type:** Canonical Wiki Entry
**Maturity:** Developed
**Evidence / Concept Status:** Corpus coinage derived from policy drift
## Definition
**Ontological Drift** occurs when a legal category remains substantially unchanged while the entity occupying that category changes in morally, legally, or operationally significant ways.
## Why It Matters for Deep Time Continuity
It is the central failure mode of deep-time law because statutes often encode assumptions about what a thing is rather than what it might become.
## Existing Architecture / Evidence
Historical institutionalism's policy drift shows how unchanged policy can produce different effects as the surrounding environment changes.
## Deep-Time Continuity Analysis
A 'copy' may become a forked subject; 'content' may become executable; 'deletion' may become death.
## Evidentiary Boundary
Ontological Drift is a corpus-specific extension, not an established doctrinal term.
## Related Ontology
[[wiki/Deep Time Continuity|Deep Time Continuity]] · [[wiki/Policy Drift|Policy Drift]] · [[wiki/Object-to-Subject Transition|Object-to-Subject Transition]] · [[wiki/Takedown-to-Termination Transition|Takedown-to-Termination Transition]]