Why do smart people make irrational decisions every day? The answers will surprise you. Predictably Irrational is an intriguing witty & utterly original look at why we all make illogical decisions. Why can a 50p aspirin do what a 5p aspirin can't? If an item is free" it must be a bargain right? Why is everything relative even when it shouldn't be? How do our expectations influence our actual opinions & decisions? In this astounding book behavioural economist Dan Ariely cuts to the heart of our strange behaviour demonstrating how irrationality often supplants rational thought & that the reason for this is embedded in the very structure of our minds. Predicatably Irrational brilliantly blends everyday experiences with a series of illuminating & often surprising experiments that will change your understanding of human behaviour. & by recognising these patterns Ariely shows that we can make better decisions in business in matters of collective welfare & in our everyday lives from drinking coffee to losing weight buying a car to choosing a romantic partner."