At the beginning of Barneys, Books and Bust Ups: 50 Years of the Booker Prize (BBC4), Kirsty Wark’s voiceover promised us ‘a tale of fierce rivalries, bruised egos and, most importantly of all, countless brilliant books’. In the event, though — as the title perhaps suggested — those countless brilliant books proved rather less important to the programme than Kirsty’s edifying words had led us to believe.