In The Techno-Human Condition, Braden Allenby and Daniel Sarewitzexplore what it means to be human in an era of incomprehensible technological complexity and change.They argue that if we are to have any prospect of managing that complexity, we will need to escapethe shackles of current assumptions about rationality, progress, and certainty, even as we maintaina commitment to fundamental human values.Humans have been co-evolving with their technologies sincethe dawn of prehistory. What is different now is that we have moved beyond external technologicalinterventions to transform ourselves from the inside out -- even as we also remake the Earth systemitself. Coping with this new reality, say Allenby and Sarewitz, means liberating ourselves from suchcategories as "human," "technological," and "natural" to embrace a newtechno-human relationship.