CE_6 The Impossibility of Constraint Envelope Interaction

This paper establishes that distinct constraint envelopes cannot interact without violating admissibility. Any putative interaction—exchange of information, causal influence, shared dynamics, or coordinating structure—is shown to require illicit scope transport that is not licensed by either envelope. The argument proceeds by exhaustion rather than construction. All proposed modes of envelope interaction reduce to one of three failures: covert merging of envelopes, hidden global anchoring, or retroactive justification after standing has already been violated. When these moves are excluded, no coherent notion of interaction remains. The result places a hard boundary on cross-envelope reasoning. Constraint envelopes may coexist, but they cannot influence, coordinate, or explain one another while preserving admissibility. The paper introduces no mechanisms or operational frameworks; it records an impossibility result that fixes the limits of admissible structure across representational regimes.