Do Cubans live longer than Americans? Are Scandinavians happier than the British? Does capitalism cause mental illness? Does inequality lead to murder? Would higher taxes make us slimmer, more trusting and more charitable? Christopher Snowdon will be challenging the theory made in the best-selling book The Spirit Level that ‘more equal societies almost always do better’. By fact-checking the book’s statistics and reviewing the scientific literature, he will argue that there is no correlation between income inequality and a country’s health, happiness and well-being. The hypothesis in The Spirit Level is, he says, based on selective evidence and flawed reasoning.