Professor of Ignorance John Lloyd and his curator Sarah Millican welcome:

* Rufus Hound, the comedian, actor, politician and Strictly Come Dancing winner

* Sir Tim Smit, who gave up being a music producer and took up gardening when he found the Lost Gardens of Heligan and founded the Eden Project

* Doris Vickers, from Vienna who studied astronomy but once woke up with an overwhelming desire to learn Latin, now combining the two as an archaeoastronomer.

The Museum's guests discuss how people could tell the time at night before the invention of clocks; how politics could be transformed with the obligatory wearing of lie-detecting suits; and why going ape in the mirror could help us see what makes us human.

Researchers: Anne Miller and Molly Oldfield of QI.

Producers: Richard Turner and James Harkin.

A BBC Radio Comedy production for BBC Radio 4 first broadcast in February 2016.