An interesting read.  Definitely a brain workout trying to understand all the science and relativity and whatnot.  Much of it was fascinating.  The technology and the military and the science was very intriguing.  His vision of how society would change was interesting. 

The story itself was pretty good.  I felt slightly detached for a lot of it, but not too bad, and the science did distract from the plot a little, but was enjoyable in itself.  It covered a long period of time without a lot of really exciting stuff happening.  That’s not a bad thing necessarily, I just tend to prefer short time lines that drop you right into the action and really show a lot of detail of said action.  But for the story being told, this was probably the best way it could have been written. 

His style I did like.  It felt fairly informal, but also very intelligent and well-written.  He fused the protagonist’s thoughts seamlessly into the narration in just the way I like.  It was a fairly quick read, aside from when you’re trying to grasp the scientific concepts, but didn’t feel dumbed down like a lot of the more recent quicker reads.

Overall, I enjoyed it.  Not my favorite book and probably won’t make it onto my “reread shelf,” but I am glad I read it.