Lot 49 coming up in this thread's useful as it's basically the above turned into a novella.
I've also just read something contrasting 'post-truth' and 'post-reality',
Post-reality is far more encompassing than post-truth. Truth is derived from reality while reality exists independently. Put differently, the reality in 2014 was that armed individuals had invaded Crimea. Several truths were derived from this reality. In one truth, the armed individuals were Russian. In another truth, the armed individuals were not Russian. Yet in both truths, the reality was one and the same.
In post-reality we enter an age of endless realities. In one reality, armed individuals have invaded Crimea; In another reality, Crimea is free while daily life goes on normally. This reality is well documented. Images of Crimeans going about daily life are shared across multiple media; videos of Ukraine’s President, Volodymyr Zelenskyy, ensuring the world that no one invaded Ukraine can easily be found; while CIA satellite images, shared online, “prove” that no Russian forces have entered Ukraine. Each of these realities can then serve as the basis of many truths. Post-reality is thus a force multiplier. If there are a hundred realities, then there can be a thousand truths, as truths are derived from reality. If there are a million realities, there can be 10,000,000 truths. Post-reality scales up the phenomenon of post-truth and creates a world where nothing can be agreed upon and where there are no facts.
In the post-truth era, public diplomacy counters online falsehoods and promotes compelling digital narratives for one's own truth.
uscpublicdiplomacy.org