When a traditional politician lies, they do their best not to get caught. When a post-truth politician speaks, they might not even know whether their words are true or not.

In November, Americans will make a choice between a traditional politician and a post-truth one.

“Trump is a great example of a post-truth strategist,” says Leading Researcher Antto Vihma from the Finnish Institute of International Affairs.

“You can just bluff and not care about truth and falsehood at all, and that is what president Trump is known to do.”