Post-Truth and Selective Exposure to Fake News. Some Specific Examples of Argentina ABSTRACT. This work is part of the debate about post-truth and the impact of fake news in journalism and audiences. We also aim to understand this phenomenon from a socio-cultural perspective, beyond the journalistic environment. In this context, post-truth cannot be considered as a series of unrelated individual events but must rather be thought of as a phenomenon that goes through the current public debate, as shown by the latest Cambridge Analytica and Facebook data scandal, and the use of algorithms that may generate a high degree of obscurity in information. Finally, this paper also reflects the multiplication and fragmentation of the ways in which lies spread and perpetuate amidst the chaos of contemporary communication.