Why we sometimes choose to follow the crowd? Jimmy Doherty presents this documentary charting the human tendency to act like sheep. Jimmy reveals how big businesses, supermarkets and traffic controllers follow data trails left by our online buying and social media habits to map and predict our behaviour ? and use the information to cash in, as well as plan for sudden weather changes. Next time you buy soup during a cold snap, you might just shudder at the thought of a millionaire supermarket owner ? like a Bond villain ? sitting in a leather chair, stroking a white cat, saying: 'We've been expecting you.' Fascinating, if rather spooky?