That said, it's not at all clear that the next several thousand years will be analogous to the last several thousand. We have a rather different starting point. The key difference is mass production. A society without printing can come close to losing the works of Plato: every copy of Plato cost weeks, months, or years of a laborer's salary to make. [1] So, even at the height of Greek and Roman civilization, there were a limited number of copies of Plato's work. There were also a limited number of educated people who could read those works -- not because people were stupid, but because reading material was sufficiently expensive that it wasn't worthwhile for the majority of people to master its use.
Meanwhile, Plato himself was seen by perhaps only a few thousand people in his lifetime, at most. There were no planes or trains. There were no photographs or recordings. Hence, there weren't a lot of eyewitnesses to spread tales of Plato's genius. Inefficient as they were, the written books did most of that work.
Compare that to the atom bomb. I never got to see one in person, but I've seen them a hundred times in photographs and films. Literally half the people alive today have seen the atom bomb in one way or another. And the stories of those who encountered them directly can be heard by everyone, who then compose stories which mention the bomb, which themselves get mass-produced. There are probably more action figures of Godzilla in existence today than there ever were copies of Plato's works.
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[1] I was recently listening to Brad Delong's economic history course from Berkeley, and at one point he tried to explain the value of a book in medieval times. A book was worth the modern equivalent of tens of thousands of dollars -- that was what it cost to assemble the materials and then copy out the writing by hand. A scholar would count himself well-off if he owned two or three personal books.