@Halfak (WMF) and I identified a design assumption in IRC last week, which has been implicit in a few of the other threads here, especially in "Judgments, Endorsements, and Preference" below, but is worth surfacing as its own issue. I'd like to open this for more comments.
In the current design of JADE, there can only be one "correct" judgment per wiki entity. Most entities will simply have one editor making one judgment, but in the cases that multiple editors supply a judgment, the second, third, etc. editors will be overwriting each other's judgments as the "correct" answer. This follows the BOLD,_revert,_discuss_cycle on English Wikipedia. @Halfak (WMF) has pointed out that this is the best process for the problem domain, that we want to encourage consensus.
An alternative workflow would be something like the Wikidata model, in which multiple judgments on a wiki entity default to having equal "rank", and it would be optional to go through a consensus process. Any editor could mark one or more of the judgments as "preferred", with or without discussion, or the editors could leave all judgments as "normal" rank and we would consider the set of judgments to be unresolved and equally valid.
I think there are two questions here: what is the preferable workflow for the various use cases in which editors add JADE judgments, and what are the best requirements on the data in order to support algorithms and reasoning using the judgments?