The process by which the historian establishes that this event of major importance took place more or less as described does not seem to leave any place for memory. We cannot appeal to oral history, there are no ethnotexts as there are for the Great War of 1914–18, or the Shoa, or the Armenian genocide now (at this writing) almost a century in the past. It seems, in fact, that the science of historiography as conceived by the great nineteenth-century historians (von Ranke, Mommsen, Langlois, et al.),