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How easy is it to disregard conventional wisdom, for instance why customers stop buying, or staff leave? What about the assumed fears about globalisation or the perception of Scandinavians as gloomy. Samira Ahmed discusses challenging assumptions with Freakonomics author Steven Levitt, futurist Anne Lise Kjaer and Oxford Martin School director Ian Goldin. (Photo: A chimpanzee uses a stick to try and open a box. Credit: AFP/ Getty Images)