If a decision is unanimous, it’s probably wrong. The chances of everyone being correct is very small indeed, says a new study.

In a new paper to be published in The Proceedings of The Royal Society A, a team of researchers, Lachlan J. Gunn, et al., from Australia and France has investigated the “paradox of unanimity.”

Getting a large group of unanimous witnesses is so unlikely, according to the laws of probability, that it’s more likely that the system is unreliable.

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