Boundary Semantics#

A boundary represents the point at which a regime’s operating envelope no longer guarantees the applicability of its calibration assumptions. Crossing a boundary does not imply failure, malfunction, or error; it indicates a transition out of declared validity.

Boundary semantics serve the following purposes:

• Distinguish loss of validity from system failure
• Enable detection of regime drift without enforcing control
• Support mediated transitions between regimes
• Prevent silent assumption collapse in extreme operating conditions

Boundaries may be:

• Soft, allowing gradual degradation of validity
• Hard, indicating abrupt loss of regime applicability
• Observable or inferred, depending on system instrumentation

MSRM does not prescribe how boundaries are detected or enforced. It provides a structural framework for reasoning about boundary crossings and their implications for calibration and interpretation.

Boundary semantics are descriptive and non‑prescriptive. They formalize where assumptions end, not how systems must respond.