I didn't really understand Do Android dream of electric sheeps?, from Philip K. Dick. I should read a lot more of his to understand what he meant in this book and I don't have the time for this.
(I don't have the time to stay on Mastodon and Twitter for so long by the way but it's really hard to focus on a paper book.)
In his book, Philip K. Dick talks about different layers of reality, and the constant paranoïa that comes from the manipulations of reality.