Really enjoyed this weird look at a tech guy who finds a way to interact with multiple simultaneous realities. For a while I was worried it would be one of those “Hey you started out in the present time but now you’re back in history experiencing WWII” but it was not that. At the center of this book is a vaguely likeable character who has a lot of weird things happen to him, His life veers from satisfactory to really bad and it’s hard to tell how much agency he has in the whole thing. There’s a lot of “What is really real” conversations that are not terrible. There’s a little bit of “Woo multiverse” conversations that are a little more difficult. I am not a person who really enjoys books with multiple timelines and, that said, this would usually not be a book I’d pick up, but there was enough interesting stuff going on in it that I am glad that I did.