Scientists from Wageningen University and Research (WUR) and Indiana University have discovered that the increasing irrelevance of factual truth in public discourse is part of a groundswell trend that started decades ago.

While the current "post-truth era" has taken many by surprise, the study shows that over the past forty years, public interest has undergone an accelerating shift from the collective to the individual, and from rationality towards emotion.

https://phys.org/news/2022-01-rationality-declined-decades.html