The writer Jon Ronson asks are we more ourselves or less ourselves when we are alone? He confronts David Quantick, who Jon noticed avoiding him in the street one day.

Father Ted writer Graham Linehan reveals the moment he was ignored. We also talk to Yoshiro Nakamatsu, the world's most prolific inventor about the moment he invents - alone and under water. Finally we hear of the British man who was jailed in Japan and wasn't allowed to speak to anyone in his daily life for nearly 3 years.

Producer: Laura Parfitt
A Unique production for BBC Radio 4. Show less