This idea hit me harder than I expected -- I am reminded of the scene in Interstellar, where the main character's daughter's teacher asserts that we never went to the moon. I don't recall whether she genuinely didn't believe it, or whether she felt it was better to lie to the kids to keep them motivated in the present, but apparently we are getting much closer to having gatekeepers of knowledge be able to actively subvert the artifacts of history in ways which are indistinguishable to the audience. Scary stuff.

> I don't recall whether she genuinely didn't believe it, or whether she felt it was better to lie to the kids to keep them motivated in the present

She stated it as a simple fact and seemed to believe it. There wasn't any indication that she might think it was a fact of what one might call "political convenience". It made the scene just that much chilling to me: https://www.youtube.com/watch?v=MpKUBHz6MB4

This is nothing new.. "History is written by the winners..." comes to mind...

Wasn't it the main character's teacher?

There have always been Gate Keepers to knowledge. Technology is in many ways blasted down these gates for many.

Yeah, that's a real issue. You can already fake audio very very easily. People don't realize how constructed movie soundtracks are, and I don't mean in terms of special effects but just people talking in every day situations.