Plato, without actually saying so, was planning to ‘kill’ it.
A society run by his king-priests would have been ‘perfect’. Hence in no need of improvement. Not exactly dead but how would you describe something that doesn’t change in time? Anything but alive, right? And since ‘no change’ means ‘no history’…

Four centuries later, Jesus Christ had warned us about the ‘Final Countdown‘. Last Judgement, sorry. But what difference does it make? Final… Last…

Fast forward to the XIXth century, when Karl Marx was breathing new life into Plato’s ideas.
The Communists, therefore, are on the one hand, practically, the most advanced and resolute section of the working-class parties of every country, that section which pushes forward all others; on the other hand, theoretically, they have over the great mass of the proletariat the advantage of clearly understanding the line of march, the conditions, and the ultimate general results of the proletarian movement.” (Karl Marx et al, Manifesto of the Communist Party),
Which very able and extremely wise communists were supposed to solve all past, present and future problems through a very simple measure. Abolition of private property and of the state needed to protect such property.
And since not everybody was yet ready to receive ‘the good news’, the communists were given a free hand to use revolutionary force in order to accomplish what they had to do.

To finally bring order to the World. To end history, that is.

Am I thick headed or the difference between Marx’s and Plato’s words is small enough to be insignificant?

You have again forgotten, my friend, said I, that the law is not concerned with the special happines of any class in the state, but is trying to produce this condition in the city as a whole, harmonizing and adapting the citizens to one another by persuasion and compulsion, and requiring them to impart to one another any benefit which they are severally able to bestow upon the community, and that it itself creates such men in the state, not that it may allow each to take what course pleases him, but with a view to using them to the binding together of the commonwealth.” (Plato, Collected Dialogues, The Cave)

A short century later, another optimist announced that ‘now, after the communist gulag had finally imploded, liberal democracy – a system flexible enough to absorb/solve any input/problem – will take over the entire planet. And, of course, bring over “The End of History” “.

Three decades later things are going on, as if nothing had happened.

There are still plenty rulers who behave as if “L’etat c’est moi” was coined yesterday and, even more sadly, too many people who look up to them.

The end of history has been postponed. Indefinitely.