How well do you make decisions? It’s never easy, but today John Carter is faced with an agonising choice and has just 60 minutes to make the right call. One path could lead to glory, while the other might result in death. Hannah Fry tells a tale of risk, decision making, and the single graph that changed it all. Presenter: Hannah Fry Executive Producer: Martin Smith Series Producer: Lauren Armstrong-Carter Episode Producer: Lauren Armstrong-Carter A series for Radio 4 by BBC Science in Cardiff.