One thing I really like about this book is that it's easy to classify. If you are a fan of Isaac Asimov's Robot series, the Expanse, or detective novels, then this book is right up your alley.
The main character is tightly written, there is very solid world building with enough details to keep the story moving, while still teasing plenty of content for other adventures. Dialogue and character building is a bit spotty though, solid in some areas and weak in others, which I will expand on below.
The plot itself is good, I won't say excellent, but as an introduction to the world, it is perfect. Accessible, clear, well thought out, but far from simple. Again, this is thanks to the rich world he has set the plot into, nothing feels bare because there are many interesting and new locations throughout the Solar System. As for the mystery at the heart of the book, Matt takes us through his ideas of where neuro interface technology is moving, with some very compelling conclusions!
The main character is quite good, enough of a blank slate to project onto, with plenty of flaws that we can sympathize with. He gives us a great way to approach the 'fish out of water' narrative style due to his circumstances, which is a great tone for explaining things to the audience. It also provides plenty of reasonable explanations for how characters respond to him and vice versa. Over-all A+ on the protaganist.
Side characters are also strong, with one glaring exception, the primary female lead has generally poor dialogue and her motivations are not well thought out. This can lead to some very awkward dialogue exchanges, which comprises the final third of the book. That said, the first third of the book actually has the best dialogue, with some excellent opening banter between convict miners, a confrontation with a prison warden, and a conversation with a hologram all standing out as excellent scenes in my mind.
So over all I graded it a 4. Excellent entry, deeply enjoyed it, but I noted some clear areas in need of improvement. Can't wait to read the next one!