Singularity Sky

Singularity Sky, by Charles Stross, is the kind of book that reminds me why I read science fiction. It actually comes before Iron Sunrise, which was the first Stross book I read, and was the one that made me decide to read all his books (not there yet, but well on my way).

The setting is some time after the Singularity, when an artificial super-intelligence has scattered humanity over several thousands of light years, and the various outposts of humanity have settled on various levels of technology, depending on whether they have embraced or rejected technology.

It's a big ol' space opera, a couple of people from Earth are working in/for a backward totalitarian empire, and get involved when that empire ends up fighting a very high-tech invader. The people are well done, though some tend towards caricature. The culture clashes between the various groups are very nicely done; the technology is mind-blowing.

This one is a definite recommended read if you like your science fiction. One of the books I'll recommend down the years, and read again at some point in the future (unless Stross keeps up his current prolific rate of writing, in which case I'll just try keeping up with him).