Open Questions groups documented gaps, disputes or unresolved points this atlas records rather than silently omits, such as contested attribution for a historical claim or an area where the field own guidance has changed and not yet settled. Belongs here: a named open question, the entities it concerns and, where known, what would resolve it. Does not belong here: a routine missing fact that a future research pass will simply fill in, which needs no open-question entity of its own, only the gap left honestly unstated.