The Oxford Dictionaries named ‘post-truth’ as their 2016 Word of the Year. It must sound alien to scientists. Science’s quest for knowledge about reality presupposes the importance of truth, both as an end in itself and as a means of resolving problems. How could truth become passé?
Post-truth refers to blatant lies being routine across society, and it means that politicians can lie without condemnation. This is different from the cliché that all politicians lie and make promises they have no intention of keeping — this still expects honesty to be the default position. In a post-truth world, this expectation no longer holds.