Newton's Wake: A Space Opera

Newton's Wake: A Space Opera is a science fiction novel by British writer Ken MacLeod, published in 2004. Set in the 24th century, it follows human life after a partially cataclysmic Singularity, and in particular a conflict on a far-flung planet that upsets the prevailing order. It has elements of both transhumanism and satire and is written using the printed versions of common translation stereotypes (e.g. Scottish people say "tae"). The novel was nominated for the British Science Fiction Award in 2004, and the John W. Campbell Memorial Award for Best Science Fiction Novel in 2005.

Plot
In the late 20th century, at the start of a war between the European nations and the United States, a US Army AI directing weapons overcame its programming to become self-aware. Then followed the "Hard Rapture", an explosive expansion and evolution of computer systems that left most of humanity dead or devoured while the AIs and assimilated persons progressed into posthumanity beyond human comprehension and departed for parts unknown, leaving behind artifacts on a number of worlds.

With the Earth now populated by varyingly dormant, partially sentient war machines, humanity lives offworld. The three main sects are America Offline (AO), the Knights of Enlightenment (KE) and Demokratische Kommunistbund (Democratic Communist Union) (DK). Examination of the posthuman relics has resulted in deep but sporadic knowledge of such things as FTL travel.

The main character is Lucinda Carlyle, a member of a Scottish family of entrepreneurs/thugs that controls a system of traversable wormholes known as the Skein. Lucinda is a "combat archeologist", leading a team to the unexplored world of Eurydice to salvage posthuman technology and deal with whatever it tries in response. Not only does she find a motherlode of an artifact, but a lost colony of humans that escaped Earth in the Hard Rapture and are living in a post scarcity society (with cosmic string weapons far beyond those of other groups). Each side is as surprised as the other, having thought themselves the only survivors. Then the Knights of Enlightenment discover that the artifact, originally the crashed colony ship of the Eurydiceans, is the focal point of the Skein.