“Coordination made the agents agree. It did not make them right.”

Useful negative result from a vendor against its own interest: agreement is not correctness. Other numbers: in all 10 tasks the two agents' features touched the same file (same lines in 5) even in separate workspaces; with message-passing but no shared code, 7 of 10 merges conflicted; the benchmark's own shared-Git mode already reached 6 of 10 passing; a single agent building both features alone passed 5. They also published a correction (4-agent shared Git 2 of 10 became 3 of 10 after stale patches were excluded). Self-run, small (n=10), one model; read as direction, not proof. Supports 'one integrator' over 'every agent merges everyone'.