Fast reading, but ultimately almost pointless. Gladwell is a journalist, not a scientist, and this book is basically a very long magazine article, not a scientific text. There are no facts behind any of this theories, or even theories behind his statements, and worst of all, he confuses causality with correlation. This is most strikingly displayed when he authoritatively says that the reduction in crime in New York in the 1990's was due to changed police strategies. He even says "After all, there were not suddenly less criminals in the city". The previous book I read had an actual scientist with a much more convincing theory that explained the drop in the crime rate as being due to the legalization of abortion some 20 years before the crime rate dropped, which had the effect of dramatically lowering exactly those births most likely to lead to new criminals.