The premises of Condorcet's jury theorem are not simultaneously justified

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Dietrich, Franz
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Condorcet's famous jury theorem reaches an optimistic conclusion on the correctness of majority decisions, based on two controversial premises about voters: they should be competent and vote independently, in a technical sense. I carefully analyse these premises and show that: (i) whether a premise is justified depends on the notion of uncertainty or probability employed; (ii) no such notion renders both premises simultaneously justified. Especially the independence assumption should be weakened.