When Philip Delves Broughton abandoned his career as a successful journalist and enrolled in Harvard Business School's prestigious MBA course, he joined 900 other would-be tycoons in a cauldron of capitalism. Two years of Excel shortcuts and five hundred of HBS's notorious business case studies lay ahead of him, but he couldn't have told you what OCRA was, other than a vegetable, or whether discount department stores make more money than airlines. He did, however, know that HBS's alumni appeared to be taking over the world. The US president, the president of the World Bank, the US treasury secretary, the CEOs of General Electric, Goldman Sachs and Proctor & Gamble - all were bringing HBS experience to the way they ran their banks, businesses and even countries. And with the prospect of economic enlightenment before him, he decided to see for himself exactly what they teach you at Harvard Business School. Philip Delves Broughton's hilarious and enlightening account of his experiences within Harvard Business School's hallowed walls provides an extraordinary glimpse into a world of case study conundrums, guest lectures, Apprentice-style tasks, booze luging, burn-outs and high flyers. And with HBS alumni heading the very global governments, financial institutions and FTSE 500 companies whose reckless love of deregulation and debt got us into so much trouble, he discovers where HBS really adds value - and where it falls disturbingly short.