Love that book. My head never hurt so much. I discovered it through an Acknowledgement in Neal Stephenson’s book “Fall” - (“Anyone who has read David Deutsch’s The Fabric of Reality will notice that Fall owes an intellectual debt to it. Anyone who hasn’t but who found Fall interesting, is urged to do so.”).
You might enjoy Fall and it’s ~prequel Reamde if you haven’t already.
https://www.amazon.com/Fall-Dodge-Hell-Neal-Stephenson/dp/006245871X
https://www.amazon.com/Reamde-Novel-Neal-Stephenson/dp/0062191497