Reflection and reason are overrated, according to renowned psychologist Gerd Gigerenzer. Much better qualified to help us make decisions is the cognitive, emotional, and social repertoire we call intuition, a suite of gut feelings that have evolved over the millennia specifically for making decisions. Gladwell drew heavily on Gigerenzer's research. But Gigerenzer goes a step further by explaining just why our gut instincts are so often right. Intuition, it seems, is not some sort of mystical chemical reaction but a neurologically based behavior that evolved to ensure that we humans respond quickly when faced with a dilemma (BusinessWeek).