 The merging of individual belief bases into a collective one shares similarities to the judgment aggregation problem. In both cases, we wish to aggregate individual inputs into a group outcome, and both disciplines employ logic to formalize the bases’ contents. As we have seen in  Section 1,  no aggregation procedure can ensure a consistent and complete group judgment. However, the merging operators introduced in computer science ensure a consistent outcome because such operators do not satisfy independence. The collective judgment on a proposition is not only determined by the individual judgments on that proposition but also by considerations of all other agenda’s items. It is natural to apply the results about merging methods to the aggregation of individual judgments (Pigozzi 2006).