As with all things, there is the actual and the mental model (including physics). Some refer to actual history, which can never be exactly known and some refer to “history” as being merely whatever is currently documented (and often erased and rewritten). The mind identifies or objectizes (forms a mental picture or as a mental object) situations or events and records them as historical events based on relevance.
Those who record history for sake of humanity, identify some things as relevant and others as irrelevant and document the relevant ones. New ages bring people who then erase or alter documents so as to further their chosen cause.
So the idea of no one ever documenting anything seen as relevant means that the age that has been entered regards no changes as relevant and thus either doesn’t document them or merely documents them as an ambiguous repeated cycle. Or perhaps, as suggested, we simply stop calling it “our history” because there are no more humans to consider anything relevant.
As long as some living entity exists, there will always be a personal history relevant to that individual, at least. And it is hard for me to imagine even the possibility of life continuing in any form without any recording of social events marked as significant moments of change as far as those lives are concerned. Every small town and family has its historical events.
So the only thing that I could safely call the “historical essentials” that are being referred to would be the globally public announcements concerning globally significant events standing out above the average enough to be note worthy.
The greater issue is of course, the contrived historical announcing, a purely imaginary history for sake of an artificially propagated society being told of events so as to inspire them in certain ways even though those events never really occurred (The Matrix scenario). The more people believe what they are told via a news mediator, the more invention of history occurs and the less anyone knows of it being completely fake.
So to a public, history could never actually end because either the level of relevance will shift so as to make formerly irrelevant things noteworthy or invented historical scenarios will be told to them regardless of perhaps nothing actually relevant changing.
According to Ernst Nolte there are especially the following „historical existentials“, which are translated by me ( [-o< or =D>):
• Religion (God/Gods, a.s.o);
• Rule (leadership, a.s.o.);
• Nobleness (nobility, a.s.o.);
• Classes;
• State;
• Great War;
• City and country as contrast;
• Education, especially in schools and universities;
• Science;
• Order of sexulality / demographics, economics;
• Historiography / awareness of history!
Ernst Nolte wrote (ibid, p. 10):
„Es wird also für möglich gehalten, daß bestimmte grundlegende Kennzeichen - oder Kategorien oder »Existenzialien« - der historischen Existenz tatsächlich nur für das sechstausendjährige »Zwischenspiel« der »eigentlichen Geschichte« bestimmend waren und heute als solche verschwinden oder bereits verschwunden sind, während andere weiterhin in Geltung bleiben, obwohl auch sie einer tiefgreifenden Wandlung unterliegen. Die Analyse solcher Existenzialien im Rahmen eines »Schemas der historischen Existenz« ist das Hauptziel dieses Buches.“
My translation:
„Thus, it is thought to be possible that certain fundamental characteristic - or categories or »existentials« - of the historical existence have been decisively only for the six thousand years lasting »interlude« of the »actual history« and now are disappearing as such or have already disappeared, while others continued to remain in validity, although they are also subjected to a profound transformation. The analysis of such existentials within the framework of a »scheme of historical existence«is the main goal of this book.
Ernst Nolte wrote (ibid, p. 672):
„Befinden wir Menschen … uns bereits in der »Nachgeschichte«, wie wir den Zustand in Ermangelung eines besseren Terminus nennen wollen, oder doch mindestens im Übergang dazu?“
My translation:
„Are we people … already in the »post-history« as we like to call the state for lack of a better term, or at least in the transition to that?“
Ernst Nolte wrote (ibid, p. 682):
„Alle historischen Existenzialien … haben … grundlegende Änderungen erfahren, und einige, wie der Adel und der »große Krieg«, sind nicht mehr wahrzunehmen. Aber selbst diese haben sich eher verwandelt, als daß sie ganz verschwunden wären: Der große Krieg bleibt als dunkle Drohung bestehen, und der Adel überlebt in gewisser Weise als Pluralität der Eliten.“
My translation:
„All historical existentialia … have … been changed fundamentally, and some, like the nobleness and the »Great War«, are no longer perceivable. But even these have been transformed rather than that they were all gone: the great war remains as a dark threat, and the nobility survived in some ways as pluralism of elites.“
That are some sentences Nolte wrote in his bulky book, which was published in 1998: „Historische Existenz“ („Historical Existence“).