Download or read book Critical Mass written by Philip Ball and published by Macmillan. This book was released on 2006-05-16 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ball shows how much can be understood of human behavior when we cease to predict and analyze the behavior of individuals and instead look to the impact of individual decisions--whether in circumstances of cooperation or conflict--on our laws, institutions and customs.