That we have recently transitioned into a post-truth political era is a common refrain. But the influence of false, inaccurate, and misleading claims on politics in western liberal democracies isn't novel. In their book, Merchants of Doubt, Oreskes and Conway expose the "Tobacco Strategy": the methods various actors have deployed, increasingly since the mid-twentieth century, to obscure the truth about scientific issues from the public, induce widespread ignorance and unwarranted doubt, and stall public responses to issues that can have significant (...) consequences for people's lives. One aspect of the Tobacco Strategy involves the propagation of falsehoods by actors dissenting from an expert consensus (Oreskes... (shrink)