Why do we still have a headache after taking a 1p aspirin which disappears when we take a 50p one? And why are we attracted to a 2-for-1 meal discount but fail to save for a pension? Most of the time we think we're making rational decisions. But are we really? In this mix of stand-up and neuroscience, award-winning, five-star author Bernard Ross challenges your assumptions about just how smart you are and explains the rules you follow to make predictable mistakes. Buying wine, dieting, food shopping or dating, find out why you overpay, underestimate and procrastinate.