Margaret Heffernan: Is it time to embrace uncertainty?

The worldwide spread of coronavirus and its significant negative impact on the global economy represents a powerful illustration of the perils of forecasting. Countries in lockdown, financial markets in turmoil; this isn’t the way 2020 was supposed to pan out. HARDtalk's Stephen Sackur interviews acclaimed writer and businesswoman Margaret Heffernan, who has just published a book on the fallacies of forecasting.