# C291 author review Question: How does the existing8464 bridge act on the four-node K structure? Conclusion: The fixed16K bridge interlaces the two source pairs at(4,5,6,7)K+i, with four complete numerical rows and two partial rows. The exact results were inspected against the source register and independently expressed domain identities in the checker. The second run verifies deterministic reproduction, not independent scientific review. No new agent review is claimed. Limits: - Translated source landings are generated positions, not new AD events. - The sixteen-K relation is derived from the seventeen-K correspondence. - Two lower rows remain incomplete. The report and checkpoint are authored interpretations. The verifier authenticates the supplied inputs and calculations; it does not prove historical intentionality. Original dependencies and all standing controls remain unchanged.