At n=1, you don't. That's a basic feature of history. But if historians have 5 different accounts of the Battle of Bosworth Field, or 7 copies of an Edict iss

At n=1, you don't. That's a basic feature of history. But if historians have 5 different accounts of the Battle of Bosworth Field, or 7 copies of an Edict issued by Pope Gregory II, or ...