How can the government attract the country’s best minds to work for them? How do we know when a private sector contract is a good one? And what can we learn from NASA about business and efficiency?  Mariana Mazzucato is a professor of Economics at the University College London and an advisor to many governments. In her latest book, ‘The Big Con’, she looks at the relationship between the consulting industry and government, and the way business and governments are run, and plans executed.  She joins Krishnan Guru-Murthy on Ways to Change the World to discuss how economic theory can streamline everything from school lunches to handling a pandemic, and the link between knife crime and the economy.  Produced by Imahn Robertson and Ka Yee Mak