"At its heart, this book touches on a mystery of economics: what exactly is happening in our world, and why does it often work so well? As the authors show, apparently messy systems - such as untidy desks - actually exhibit a high degree of order: the piles of paper are close to hand, and the most important documents tend to make their way to the top while un-needed ones sink to the bottom. If the mess works, why mess with it?"