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DOES HARVARD MAKE YOU SMARTER? Swimmer’s Body Illusion As essayist and trader Nassim Taleb resolved to do something about the stubborn extra pounds he’d be carrying, he contemplated taking up various sports. However, joggers seemed scrawny and unhappy, and bodybuilders looked broad and stupid, and tennis players? Oh, so upper-middle class! Swimmers, though, appealed to him with their well-built, streamlined bodies. He decided to sign up at his local swimming pool and to train hard twice a week. A short while later, he realised that he had succumbed to an illusion. Professional swimmers don’t have perfect bodies because they train extensively. Rather, they are good swimmers because of their physiques. How their bodies are designed is a factor for selection and not the result of their activities. Similarly, female models advertise cosmetics and thus, many female consumers believe that these products make you beautiful. But it is not the cosmetics that make these women model-like. Quite simply, the models are born attractive and only for this reason are they candidates for cosmetics advertising. As with the swimmers’ bodies, beauty is a factor for selection and not the result. Whenever we confuse selection factors with results, we fall prey to what Taleb calls the swimmer’s body illusion. Without this illusion, half of advertising campaigns would not work
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