A great book, very hard to put down. I whomped through this, barely able to put it down the first night–and way too late.
It starts off as a mystery, kind of, and very focused on science and analysis. There are brief bits of action every so often, but it’s mostly about people putting their heads down and working together (though with specific restraints) to solve a problem and separately, to solve the little mysteries that have accumulated.
The book remained interesting, even through one of the big reveals at the middle of the book was anticipated–because I remembered an excellent book that was intriguingly parallel on the technology front.
[Spoilers await, so I’ll put what follows below the more tag.]