Perhaps because "everyone lies at one time or another" –as stated by Jean-Luc Nancy in La vérité du mensonge (Bayard, 2021)–, truth is in a permanent crisis. This crisis has been aggravated over the last decades by the end of the single narrative championed by postmodernity, the multiplication of the capacity for impact and the transmission of lies through social media, which have become one of the great trending topics of our present, and the worrying expansion of falsehoods that artificial intelligence can transmit.