Where do you start a conversation with people who have tried to kill your family? How can a hostage negotiator teach us to get someone on side in less than a minute? Can a Muslim woman who sat down with neo-Nazis teach us to be better listeners? Conversations are broken. And while effective dialogue is supposed to lead to greater fulfilment in our personal and professional lives, all the scientific evidence points towards us sharing fewer interactions than previous generations. From ever decreasing face-to-face meetings to echo chambers online, we no longer have the necessary tools to talk to each other. Nihal Arthanayake is bucking this trend. As the world becomes increasingly more fractured, he has built a platform of 1.2 million listeners a week on BBC Radio 5 Live who regard him as one of the best people of his generation at having public conversations.