Establishing a difference is the lynchpin of marketing. It can be achievedin many ways, often not overtly competitive. The results are often both magical and powerful, such as changing the price of a little regarded fish from £0.05 a kilo to £1.00 at little expense. But, as with many other areas which have great value, this potency has resulted in marketing sometimes being shrouded in complexity. This book hopes to cut through these complexities and emphasise the pivotal nature of differentiation, based on the many cases histories cited and the advances in the related fields referred to, particularly the work of psychologists such as Daniel Kahneman.