This is How You Lose the Time War came highly recommended by a Goodreads buddy of mine as the way to write sci-fi. I don't know what to say about that. He was so ebullient about how great the book was that there was bound to be some disappointment. It is nicely written and touches, under the guise of science fiction, the intricacies of human relationships and feelings. But other than that it was just one idea, stretched over 200 pages, in something that was both short and felt unreasonably long. Perhaps some time issues need arise when time travel is involved.
What I found interesting is that it is a double author book. Amal El-Mohtar and Max Gladstone worked on it together although I suspect it was mostly El-Mohtar with the story and Gladstone with the tech stuff, although I could be just stereotyping. To me, it felt like the story has a distinctly female vibe.
Bottom line: it's a very humanist type of story: the time war, the tech, they are all props. One could have written the same kind of stuff about African tribes or corporate lawyers. After a while everything started to feel repetitive and stale only to reach the all too predictable ending. Nice book, but not great.