Reasons I hated this book:
1. The author holds people of faith in contempt. I don't have any personal animus against atheist authors in general. I've read almost all of Asimov's fiction, for example. But this book makes a point of ridiculing and demonizing people of faith.
2. Bad Research - Military: The main character is a US Air Force Captain, by virtue of being a medical doctor. Early in the book, just prior to beginning a mission, he meets the mission leader, who has the rank of Commander. The Commander salutes first, but the Captain quickly reassures the Commander that he is only there in his medical capacity, and he fully expects the Commander to lead the mission. Well, Commander is a US Navy rank, which is equivalent to a US Air Force Lt. Colonel, two ranks above Captain. So, yeah, the Commander would lead the mission. And the Captain should have saluted the Commander, as well as the Lt. Commander who is also portrayed as junior to the Captain, when, in fact, he also outranks the Captain.
3. Bad Research - Medical: The technology to place people in suspended animation through use of hydrogen sulfide is presented. While this works on mice, all attempts to use it on larger non-human mammals (sheep and pigs) have failed, and clinical trials on humans have been cancelled.
4. Bad Research - Technology: The AI in the story is more mentally capable in most ways than most humans. Yet, in the epilogue, set 62 years in the future, we are introduced to a character who we are told in some ways exceeds the abilities of the current AI. As 62 years is 31 cycles of Moore's law, we would expect that the current AI would be over 2 billion times more capable than the original. And yet, we are supposed to believe that this new character, the lead for the sequel is more capable still?
5. Bad Characters - Actually, the story doesn't really have characters, just caricatures. And not one of them is particularly likeable.
I won't be reading the sequels, and hope this review can save some people the time and money they'd have to spend reading this one.