The social divide among Leavers and Remainers is striking. The immediate reaction of many to run a second referendum therefore fails to understand the cause of the result: many feel that they have no influence over the immediate circumstances that surround them. But it’s not just the electorate’s 48 per cent who need to understand these drivers, writes Tony Hockley, but UK and EU elites alike: it is time to start thinking about the reforms that will address this widespread division and discontent