In politics, alternative facts exist. And they always have.
People are hardwired to dismiss opposing views as 'fake'.
Pundits have been keen to link post-truth to post-modernists, post-positivists or any other 'postie'. They should turn their energy to forming a real popular front against Trump's faux populism.
Populist movements are on the rise. Their supporters distrust the establishment, elites, authority and official sources. The post-truth world is a post-expert world.
Does science have an answer to science denial? Just as being vaccinated protects you from a later full-blown infection, a bit of misinformation explained could help ward off other cases down the road.
Despite the claims of populist politicians, academics and experts can drive positive social change.
The growth of new, vibrant, independent media sites and projects in South Africa have challenged conceptions of what a newsroom is. On limited budgets, some even fare better than mainstream media.
If you want to know how to spin alternative facts, just ask the PR gurus who kept the world smoking.
Today is the start of Science Meets Parliament, which helps our nation's leaders embrace the latest scientific evidence.
Alternate realities don't just exist in politics – and not all falsehoods are lies. Distortions of the truth can range from a normal part of human nature to pathological.
In Africa, the idea of a post-truth era - which by implication fundamentally presupposes the existence of an era in which ‘truth’ was self-evident - is folly.