Under LLM representational indistinguishability, any single-domain mechanism meeting free drift, execution traceability, and decoupling must re-introduce typed change objects, an external gate, and a stable audit anchor, essentially rebuilding PES at higher coupling cost.

Under LLM representational indistinguishability, any single-domain mechanism that meets all three must re-introduce typed change objects, an external gate, and a stable audit anchor: PES rebuilt at higher coupling cost.

http://arxiv.org/abs/2608.27427v1