ForgettingBy: Dr Scott A. Small 'Brilliant' Bill Clinton 'Fascinating and useful', Walter Isaacson, bestselling author of The Code Breaker and Leonardo da Vinci 'Upbeat', The Wall Street Journal Racking your brain? Drawing a blank? Maybe it's not such a bad thing Until recently, it was largely believed that forgetting served no purpose. Besides causing slight frustration, the odd slip of the mind was thought of as an inevitable but harmless defect in the