Andy Burnham is wrong: group think trumps devo divergence and cannot save Port Talbot, Scunthorpe or Aberdeen GROUP THINKis a problem in many settings. It can happen in markets, parliaments, sports crowds or even just around the sofa watching telly with the family. It is when what is observed or learned results in a commonly held view that nearly everyone thinks must be right, with discordant opinions ignored or suppressed – only to have been validated later to some degree.