One could argue that the modern discipline that is Economics is, to a large degree, a branch of applied mathematics. This is a far cry from its early roots found in the work of more philosophical thinkers such as Adam Smith. How did we end up here? One major reason is the "Marginal Revolution" of the nineteenth century. In this episode of their award winning podcast, Pete and Gav, your friendly neighbourhood economists, explore the life and ideas of William Stanley Jevons, one of the proponents of this less than bloody revolution. He was the man who turned Political Economy into Economics and said in his most famous book ‘Theory of Political Economy‘ - ‘Economics, if it is to be a science at all, must be a mathematical science’. As always, there is a quiz for you to enjoy linked to the Jevon's Number, a poem that distils his life in rhyme and a discussion about whether the weather has any impact on business cycles whatsoever! Technical support as always comes from Nic.