The underlying reason that non-zero-sum games wind up being played well is the same in biological evolution as in cultural evolution. Whether you are a bunch of genes or a bunch of memes, if you're all in the same boat you'll tend to perish unless you are conducive to productive coordination.... Genetic evolution thus tends to create smoothly integrated organisms, and cultural evolution tends to create smoothly integrated groups of organisms.
Admittedly, it's as hard to think clearly about natural selection as it is to think about God, but that makes it just as important to acknowledge our biases and try to exclude them from our conclusions. It is this that makes Nonzero potentially unsatisfying to the scientifically literate. Time after time we've seen thinkers try to find in biological evolution a "drive toward complexity" that might explain all sorts of other phenomena from economics to spirituality. Some authors, like Teilhard de Chardin, have much to offer the careful reader who takes pains to read metaphorically. Others--legions of cranks--provide nothing but opaque diatribes culminating in often-bizarre assertions proven to nobody but the author. Wright is much closer to de Chardin along this axis; his anthropological scholarship is particularly noteworthy, and his grasp of world history is excellent. Unfortunately, he has the advocate's willingness to blind himself to disagreeable facts and to muddle over concepts whose clarity would be poisonous to his positions: try to pin him down on what he means by complexity, for example. Still, his thesis that human cultures are historically striving for cooperative, nonzero-sum situations is heartening and compelling; even though it's not supported by biology, it's not knocked down, either. If the reader can work around the undefined assumptions, Wright's charm and obvious interest in planetary survival make Nonzero a worthy read. If the first chapter's title--"The Ladder of Cultural Evolution"--makes you cringe, the last one--"You Call This a God?"--will make you smile. --Rob Lightner