Just finished reading This Book Does Not Exist: Adventures in the Paradoxical by Gary Hayden and Michael Picard. It was a fun book, in that it requires you to think about the problems presented and figure things out. I think I'll need to read some parts of it again to really understand it.
It's been a long time since I read these books, but my impression from the books was the timelines split due to the coin toss made by Cochrane. Besides, I don't think the idea that our main universe would've be the mirror universe if not for some alien meddling is a pleasant thought.The idea that the mirror universe is what ours would be if it weren’t for the continuous meddling of the Preservers.