Myths. We tend to think they’re a thing of the past, fabrications that early humans needed to believe in because their understanding of the world was so meagre. But what if modern civilisation were itself based on a set of myths This is the big question posed by Professor Yuval Noah Harari, author of 'Sapiens: A Brief History of Humankind', which has become one of the most talked about bestsellers of recent years. In this exclusive appearance for Intelligence Squared, Harari argued that all political orders are based on useful fictions which have allowed groups of humans, from ancient Mesopotamia through to the Roman empire and modern capitalist societies, to cooperate in numbers far beyond the scope of any other species.