What did they mean by that? Did Greece’s No voters truly think the creditor nations were bluffing when they said No meant goodbye to the country’s membership of the single currency? Or did the majority of voters who marked Oxi on their ballot papers in cities and villages across Greece really want out of the eurozone? We can’t be sure. That’s the problem with referendums. Plebiscites are presented as the apotheosis of democracy – but they often leave as many questions as answers.