“Post-truth” has come to describe a type of campaigning that has turned the political world upside down.
Fuelled by emotive arguments rather than fact-checks, it was a phrase that tried to capture the gut-instinct, anti-establishment politics that swept Donald Trump and Brexit supporters to victory.
Oxford Dictionaries made it the word of the year, defining it as where “objective facts are less influential in shaping public opinion than appeals to emotion and personal belief”.
But what does this new world mean for academics and scientists whose whole purpose is trying to establish objective facts?
AC Grayling, public thinker, master of the New College of the Humanities, and Remain campaigner, views the post-truth world with undisguised horror.