Conjoiners: descendants of an experimental clique on Mars who had systematically upgraded their minds, swapping cells for machines, until something sudden and drastic had happened. In one moment, they had escalated to a new mode of consciousness—what they called the Transenlightenment—precipitating a brief but nasty war in the process. Conjoiners were easy to pick out in crowds: recently they had bio-engineered huge and beautiful cranial crests for themselves, veined to dissipate the excess heat produced by the furious machines in their heads.
