The book I am talking about is "The Gulag Archipelago"
See the screenshot (marked text) first. If the book has the power to change your memories so you can't distinguish between what you experienced and what you read, isn't that basically manipulation?
I know that something similar is possible for example with altered photos of you childhood that can trick your memories of the time, for example some object that you were told to have but you didn't.
Yeah that has very much so a "this added a narrative I like to my disconnected anecdotal experiences" which makes it easier to recall, warping the original memories. Christianity does this too, adding an easy narrative to the seemingly random suffering people go through.