
My rating: 5 of 5 stars
This is one of those books where you're not going to follow everything, so you just have to let the worldbuilding wash over you and concentrate on the plot and characters. I even found myself wistfully wishing for an infodump now and again, but no; you just have to either work it out or let it go (or, as I eventually did, look up an online glossary). I did get at least some of the references to the character Arsene Lupin, from a series of early-20th-century novels I've been reading on Project Gutenberg (Lupin is a gentleman thief who later turns detective), and it made me feel like Steve Rogers recognizing the Wizard of Oz reference. The main Lupin reference, apart from how the character Jean le Flambeur is in general, is the name "Paul Sernine," which both le Flambeur and Lupin use as an alias; it's an anagram of "Arsene Lupin," and would be a dead giveaway to anyone who happened to be a fan of early-20th-century crime novels that here is a criminal who is, nevertheless, disposed to help people.
This is a world of mind uploads, smart matter, and quantum entanglement, by an author who holds a PhD in mathematical physics, and it gets pretty wild, but you don't really have to understand the theoretical physics to follow the plot, fortunately. You can treat it as a kind of magic and just focus on the characters, the factions, and their interactions, which is what the author does.
It's well worth reading the Wikipedia page for Nikolai Fyodorov to understand why one of the factions is called fyodorovs and what their Great Common Work is (basically, to upload everyone so they can eventually all be resurrected). There are various bizarre posthuman factions with different attitudes to the use of copied consciousness, all of which are involved in the plot in one way or another.
It's one of those dual-threaded novels, where we follow two main characters in alternation for a while as they gradually converge. One is the thief of the title, the other a detective (not by occupation, but by avocation). The thief's first target is himself, since he has been broken out of a virtual prison, and in this world of uploaded minds his particular mind is missing a lot of context - rather like the reader.
There are some heavy-duty revelations dropped during the book, which tie the characters together even more tightly and give them even more motivation to protect the Martian city where most of the action takes place. And there is plenty of action; despite its strong foundation of advanced science and philosophy, it's not a book where people sit around and talk about philosophy, at least not any more than they have to in order to justify their actions in pursuit of what they believe in; nor does it contain science infodumps, as I've alluded to above. It's more or less the opposite style to Andy Weir (for the science infodumps) or practically any 21st-century novel by someone with an ideological position who has to tell you about it all the time, of which there are so many to choose from it would be unfair to pick just one to mention. The setting and the beliefs of the factions and individuals drive the plot, which, to my mind, is how a novel ought to work.
In its high-concept gonzo worldbuilding and setting-influenced, character-driven action, it reminds me of Brandon Sanderson, Robert Jackson Bennett, or (at his best) Max Gladstone. These are writers I rate highly, and so I gave this a 5-star rating and, as soon as I'd finished it, immediately bought and started the sequel, which isn't something I do often.
The author speaks English as a second language, and there are a few minor issues with the occasional idiom getting the wrong preposition or a plural instead of a singular verb. I could name three or four books by native English speakers that are far worse in this regard, though those probably haven't been professionally edited at a major publishing house (not that major publishing houses never put out badly edited books). Between the author and the editor, in any case, this is largely free of stumbles, allowing the reader to focus on the spectacular set-pieces, the conflicts, and the alliances.
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