I really enjoyed this book. It's a follow up to the book "The Aremac Project" but I read them out of order. The author does a good job of giving enough information on the events of the previous novel that I didn't feel lost at all and was sucked in right away by the challenges the characters faced and the cool ideas surrounding the Aremac itself.
Some of the science takes a little suspension of disbelief, but that's true of a lot of science fiction. No one really understands yet how memories are exactly processed and stored, so there's lots of theoretical lee-way and the tech used here explores one path. The relationships between the characters, as well as their relationships with technology and their cultures, are also well-developed. This was a very enjoyable read and the pacing was spot on.