The term "post-truth politics" was coined by the blogger David Roberts in a blog post for "Grist" on 1 April 2010. Roberts defined it as "a political culture in which politics (public opinion and media narratives) have become almost entirely disconnected from policy (the substance of legislation)". Post truth was used by philosopher Joseph Heath to describe the 2014 Ontario election. The term became widespread during the campaigns for the 2016 presidential election in the United States and for the 2016 "Brexit" referendum on membership in the European Union in the United Kingdom. Oxford Dictionaries declared that its international word of the year in 2016 was "post-truth", citing a 2,000% increase in usage compared to 2015.