A jury drawn from rival model vendors breaks family bias: a model grading its sibling's homework is a conflict of interest. Cross-vendor votes, blind packets, and preserved dissent make the verdict neutral.
The first jury finds the strongest candidate ideas. The second jury verifies that synthesis actually produced a better final. Integration changes the artifact, so it must not inherit the candidate verdict.
Fusion separates verification into stages because executable tests, comparative judgment, and adversarial release review establish different kinds of evidence. The gate decides what executes, the jury decides which gate-passer best serves the intent, and fresh QA decides whether the selected final is safe to hand off.
When judges disagree, Fusion records the split and preserves the dissent instead of averaging it away. A 2–1 verdict tells you exactly where the risk lives.
Fusion judges never learn which agent wrote which candidate. Packets are stripped of identity and independently randomized per judge, so verdicts attach to the work, not the brand.