 Despite the traditional view that the LSE and Cambridge were fierce rivals through the 1920s and 30s, they worked together in the 1920s on the London and Cambridge Economic Service.However, the 1930s brought a return to disputes as economists at the two universities argued over how best to address the economic problems caused by the Great Depression.The main figures in this debate were John Maynard Keynes from Cambridge and the LSE's Friedrich Hayek.