Tim Harford: The tyranny of spreadsheets

How one of our most powerful tools became one of the most misused. A contact tracing system error triggered an astonishing story for Tim Harford. In this fascinating insight into how the world takes numbers for granted, the Undercover Economist explores how an excel error took him on a journey of research into the history of accountancy and vaccination, even leading him to discuss file formatting with Microsoft’s founder, Bill Gates.