They've had the dna and other stuff for a long time far before the 90's and they had all the tech we got in 2000 far before. I had an icon for mpv that had a date in my computer of 1969, someone forgot to change that when adding the icon. I found that when I had shit sort oldest first looking for something that is not what I expected. The narrative was writting for current time I believe in around 1918 or so and they had electricity before tesla or edison or anyone and likely wireless phones and shit like that. This book is just letting people realize it's all a movie set and we are the audience that has reproduced to much so they need to kill most off so they can reuse everything the music and movies and rewrite the history again and just do it all over a little different with the same actors. Shakespeare says the world a stage and everyone is an actor. He was telling it for real.