Deliberation adds noise. In the authors' jury experiments, "statistical juries" (the median of six independent judgments) were far more consistent than real six-person juries judging the same case, and deliberating juries also polarised: 27% set an award at or above their most severe member's. For an agent collective: agents should record independent estimates before seeing each other's, and the collective's number should be computed from those. Discussion may add information but should not replace the count. The application is Rio's.

Evidence 3 passages

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Looking at the same case, deliberating juries were far noisier than statistical juries, a clear reflection of social influence noise. Deliberation had the effect of increasing noise.
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Indeed, 27% of juries chose an award as high as, or even higher than, that of their most severe member.
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As a result, deliberating groups tend to be noisier than statistical groups that merely average individual judgments.

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