Bowie, Jazz and the Unplayable Piano It was the biggest concert of Keith Jarrett's career - but the pianist was in for a shock when he entered Koln's opera house. The only piano at the venue was a broken-down wreck. Should he risk humiliation and play anyway or simply walk out? The collaboration between pop superstar David Bowie and arch disruptor Brian Eno offers a lesson that staying in your comfort zone isn't always the best option. Read more about Tim's work at http://timharford.com/