Deepfakes make it harder for us to communicate truths to one another and reach consensus on what is real.
We know that social media platforms have an incentive to promote whatever gets the most attention, regardless of its authenticity. We're more reluctant to admit that the same is true of people.
More democratic forms of politics, journalism and fact-checking will be needed when we can no longer trust any video footage.
Greek philosopher Socrates.
Three philosophers put up a booth at the entrance to a New York City subway, so people could come to them with questions. They got hit with some real zingers.
Doubting Thomas needed the proof, just like a scientist, and now is a cautionary Biblical example.
An evolutionary biologist makes the case that there's no reconciling science and religion. In the search for truth, one tests hypotheses while the other relies on faith.
Does your body give away if you’re lying or not?
AP Photo/Edward Kitch
It would be great to know for sure when someone is lying and when someone is telling the truth. But no technology that purports to do so is foolproof.
Will we soon no longer be able to discern which videos are real and which are fake?
How medieval scientists grappled with the conflicting 'truths' of creationism and the eternity of the world.
We don’t automatically question information we read or hear.
Cognitive psychologists know the way our minds work means we not only don't notice errors and misinformation we know are wrong, we also then remember them as true.
Donald Trump posts a link to his very own ‘Real News Update’ on Facebook.
Donald J. Trump/Facebook
The best defence against post-truth politics is not 'the truth'. Democracy should resist the political tyranny of claims to some immutable truth as a basis for governing the lives of others.
Perception of truth and lies changes between languages for bilingual speakers.
‘He said what?’
Dealing with a co-worker or manager who says demonstrably false things can be a challenge, particularly at holiday office parties. Here's a guide to handle a colleague in denial.
In Taxi Driver, Robert De Niro’s character, Travis Bickle, inhabits his own crazy paradigm, yet ultimately events frame him as a hero in the eyes of others too.
As Orwell knew only too well, if the concept of objective truth is moved into the dustbin of history there can be no lies. And if there are no lies there can be no justice, no rights and no wrongs.
Facebook founder and CEO Mark Zuckerberg announces the launch of Oculus Go virtual reality headset in October.
Will the arrival and popularity of Oculus Go and other VR systems make us think differently about alternative realities and so-called alternative facts?
Is speaking some evil really so bad?
We gave four scholars from different disciplines a chance to offer their opinions on this important question.
People reject science such as that about climate change and vaccines, but readily believe scientists about solar eclipses, like this one reflected on the sunglasses of a man dangerously watching in Nicosia, Cyprus, in a 2015 file photo.
(AP Photo/Petros Karadjias)
People universally believe scientists' solar eclipse calendars, but vaccine warnings or climate predictions are forms of science that strangely do not enjoy equivalent acceptance.
A statue of Henry David Thoreau in front of a replica of his cabin in Concord, Massachusetts.
Thoreau spent his life pursuing the 'hard bottom' of truth. But he confronted a sensationalist newspaper industry that, in many ways, mimicked today's media environment.
We cannot stand outside the fray, but instead must engage in the ‘post-truth’ debates about politics and knowledge.
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.
Public anxiety about the post-truth era inspired a New York Times advertising campaign.
Beneath simple labels like post-truth, alternative facts and fake news is a complex set of issues. Any debate about the problems needs to start from some common points of reference.
What you end up remembering isn’t always what you have witnessed.
Rwanda has come a long way since the dark days of 1994 genocide.
The road to reconciliation doesn't begin and end with truth commissions or trials. Change must occur at a systemic level, and communities must commit to rebuilding relationships.