Clive had a deadly form of cancer, but fortunately there was a new drug to treat it. Imagine his anger when he was told the treatment was too expensive. He’d entered a world where unique human lives are given a value in a mathematical formula. So how much should we spend to extend or save a life? And are some lives worth more than others?

Read more about Tim's work at http://timharford.com/

Tim's latest books 'Fifty Inventions That Shaped The Modern Economy' and 'The Next Fifty Things That Made The Modern Economy' are available now.