It does what it says on the tin.
The Medici's invented Plato, to promote Democracy, which they could control using money/bribery/intimidation/blackmail.
As far as 'inventing Plato', there was a guy by the name of Georgius Gemistus, later named Plethon (Plethon = Plato). It seems he either wrote or translated someone else's work and that became known as 'Plato's work':
"1360 – 1452/1454, later called Plethon, was one of the most renowned philosophers of the late Byzantine era.[4] He was a chief pioneer of the revival of Greek scholarship in Western Europe.[5] As revealed in his last literary work, the Nomoi or Book of Laws, which he only circulated among close friends, he rejected Christianity in favour of a return to the worship of ancient Hellenic Gods as well as ancient wisdom based on Zoroaster and the Magi.[6]
He re-introduced Plato's ideas to Western Europe during the 1438–1439 Council of Florence, a failed attempt to reconcile the East-West schism. Here, it was believed until recently, Plethon met and influenced Cosimo de' Medici to found a new Platonic Academy, which, under Marsilio Ficino, would proceed to translate into Latin all Plato's works, the Enneads of Plotinus, and various other Neoplatonist works. "
As for Cosimo De Medici:
"Cosimo's power over Florence stemmed from his wealth, which he used to control the votes of office holders in the municipal councils, most importantly the Signoria of Florence. As Florence was proud of its "democracy", he pretended to have little political ambition and did not often hold public office. Enea Piccolomini, Bishop of Siena and later Pope Pius II, said of him:
"Political questions are settled in [Cosimo's] house. The man he chooses holds office... He it is who decides peace and war... He is king in all but name"
"The arrival of notable Byzantine figures from the Eastern Roman Empire, including Emperor John VIII Palaiologos himself, started a boom in interest for Greek culture and arts in the city"
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[–] TheSeer [S] ago
Even Isaac Newton thought the accepted Chronology of his day was erroneous.
https://en.wikipedia.org/wiki/The_Chronology_of_Ancient_Kingdoms_Amended
"The book attempts to revise the accepted ancient chronology of Newton's day, in order to prove that Solomon was the earliest king in the world, and that his Temple the first ever built, with all others being copies, beginning with Sesostris, King of Egypt, followed by others. Newton's results, therefore, diverge widely from presently accepted dates, often more widely than the system that he attempted to displace.
Newton attempted to identify various mythological figures as historical or Biblical individuals, such as arguing that the Titan Saturn was Noah, the god Jupiter was Shem, and Osiris and Dionysus were Sesostris.[2] The work treats figures from Greek mythology, such as the centaur Chiron and the Argonauts, as historical fact"
You didn't answer my question when BC/AD dating was adopted, nor when cement/concrete was developed, (plus when it became widely used).
I don't even know what your question is. When was history made fraudulent? Over decades, possibly more than a century, between 1550-1700 roughly. When was 'ancient Egypt's chronology widely known by scholars? That is what you have to realize, this was all done for a purpose. The more ancient, the more prestigious.
That is why you are so against the idea that Plethon wrote what we today call Plato's work, because then it is 'merely' 600 years old, not 2400. For me, it just provides context into who financed and funded the work, and what their motives may have been (which is pretty clear, given the context).
[–] TrialsAndTribulation 0 points 1 point 1 point (+1|-0) ago
Here you go. Let me know when you're ready to take your place among these esteemed intellects.
https://web.archive.org/web/19990218204511/http://www.teleport.com/%7Edkossy/librqsch.html