Mountaineer Joe Simpson, whose award-winning book Touching The Void was turned into an award-winning film, talks about conversations with a twist - the conversations that never take place.
Specifically, he recalls the pain of failing to talk with his father about the life-changing experiences he went through in Burma, during the Second World War - and about his father's failure ever to speak to Joe about his books.
After watching, check out this 1min interview with the author Roman Krznaric - on what happened when he DID start talking properly with his father:
• Roman and his father - 60 second highlight