Mr. Klein constructs arguments deriving from current brain research and genetics; economics, history, and social psychology; game theory; and behavioral and anthropological experiments which are intriguing, to say the least. Klein is an acclaimed science writer and writes about complex ideas in an accessible (if not always coherent) manner. He has a remarkable synthetic overview of a large number of elements which condition human economic decisions and behavior. He draws upon individual human stories, social science research, and especially game theory and economic logic to show that purely rational self-interested behavior is rare and probably impossible on a broad, societal level. He implies that the macroeconomic theories of the Austrian school of essential self-interest are reductionist at best. Society would eventually collapse and die off without a substantial amount of altruism particularly when under stress from environmental or competitive pressures.Emotions, psychology, and cultural conditioning play a huge role in how people interact with each other in terms of selfish versus social decisions and behaviors. He cites natural and social science research which suggests that giving and altruism are essential for happiness itself. (There's even a biochemical basis for this in oxytocin and other substances.) Elements of community-level trust and fairness are probably more prominent than naked economic calculations. He gives many examples of how these elements of trust and fairness run counter and (or are complementary) to what ought to be expected from pure self interested logic and calculation.He also points out that even the perceived effectiveness of reason and logic strategies depends on often-ignored assumptions like differences in consequences over short, medium, and long terms, the presence of imperfect knowledge, and the like. He sprinkles numerous examples of how game theory favorites like The Prisoner's Dilemma, The Free Rider Game, Ultimatum, and the amazingly effective Tit-for-Tat strategy (where a certain short-term level of--irrational--trust is essential to its success) are relevant for a whole host of social and economic situations.There are intricate arguments about how game-like stratagems combined with tribalist elements condition self-interest and social-interest behaviors. Surprisingly, he argues how the success of generosity and good-naturedness depend on the presence of some degree of self-interest. Community-wide mores depend on an us-them competitive situation where the tribal effects unify people into efficient social structures where altruism is essential for the group to compete with and/or defeat outsiders. If and when that competition subsides, the group may then develop "freeloaders" who will increase in number in effect and collapse the social interest by rejecting its mores of trust and fairness.The historical perspective on all of this is not very well developed or very coherent nor are the references to evolutionary theory. Mr. Klein sides with the proponents of the current controversy over group genetic selection position versus the more established individual selection position. He argues that generosity is hardwired into the human species at both the individual and group levels. Nevertheless, Klein shows that the selfish-vs-social attitudes have evolved over the centuries due to advanced philosophical concepts and the influence of condensing world geography, cultural shifts, and globalization-like elements.He draws upon this evolutionary process to propose that we are in a historical period (The Global Village) where people are becoming more and more interdependent, unified by communication and transportation developments, and less tribal (at the national and cultural levels, at least) than before. These events will likely promote greater elements of trust, converging senses of fairness, and a recognition of the long term efficiencies of social behavior versus that of the mere self-interested personal attitude.As a better educated society (mainly in economic efficiency theory and morality) we can change our thinking about how we relate to one another. We will recognize the evolutionary advantages to altruism. We can practice habits of fairness and altruism. Interestingly, he refers to science which categorizes humans as comprised of three main groups: about one third are consistently self interested, one-fifth are consistently altruists, and the rest are pragmatic opportunists who act depending on the environmental variables. Optimistically, he states "The Future Belongs to the Altruists."I don't know how convincing this book can or will be given the enormous tidal wave of selfishness and narcissism which seemingly has infected our world. It seems right that a new way of thinking is a start towards something different, anyway, and this book certainly is intriguing and thought provoking.You can purchase Survival of the Nicest: How Altruism Made Us Human and Why It Pays to Get Along from amazon.com . Slashdot welcomes readers' book reviews (sci-fi included) -- to see your own review here, read the book review guidelines , then visit the submission page