Counting heads

Blurb

Counting Heads is a science fiction novel by David Marusek, published in 2005 by Tor Books.
Counting Heads is an expansion of Marusek's 1995 short story "We Were Out of Our Minds with Joy", which serves as the first chapter of Counting Heads.
Mind Over Ship, a sequel to Counting Heads, was released on January 20, 2009.