Book Review: Lady of Mazes

Lady of Mazes by Karl Schroeder
The distant future provides a framework for humans to live in a matrix-like fashion, or experience as much reality as they like.  I'll have to read it again to get all the juice out of this book, but what I liked most were the manifolds.
Since everyone has high-tech neural implants, you can experience life however you like.  If you are a fan of, say, 1986, then everything you experience will be consistent with that time period.  Hidden machines work to provide tech locks which keep any inconsistency out of your experience.  Like someone's ipod would appear to you as a cassette player etc.  Anyone can subscribe to your world, and you live among others from different manifolds but you are completely invisible to each other.
Interesting how the author came from a Mennonite community... like they are a manifold within our modern world...  You see and interact only with what you expect to see and interact with.
Anyway, it is not a simple book, as it turns out only a small group of humans have this manifold culture, and the rest of humanity is basically a post-human, AI-driven, weakly god-like thing.  What would humans really do it they were free from the flesh?  Apparently, they would get bored and try to be less so.