That's probably the one. It's probably not for everyone; the first part of the book is building a whole and detailed world for the story to exist in, as well as

That's probably the one. It's probably not for everyone; the first part of the book is building a whole and detailed world for the story to exist in, as well as creating an interesting and articulate main character to tell the story. One of the really good things about Anathem is that Stephenson hides a lot of clues and advanced mathematics in the early chapters. For example, there are two very good explanations of configuration spaces (aka Hemn Spaces) which might seem like a complete waste of time, but is actually foreshadowing.