Alan Davies leaves behind his role in the TV quiz show QI to explore the world of quantum mechanics for the BBC science programme Horizon.
The stand-up comic admits to deliberately failing at physics so he wouldn't have to take the O-level. But after making a TV documentary, he says he now understands aspects of quantum mechanics.
"There is no point in my making the programme if I don't," he says. "They have to explain it again and again until I do understand."
"They" are the physicists he meets in the programme - "I was always getting into trouble for calling them physicians instead of physicists," says Alan. "They showed me the aspects of quantum mechanics that are explicable."