The object of this research is the popular within modern academic environment, but yet hypothetical without a precise definition, concept of “post-truth”. The subject of this research is the correlation between routine thinking and post-truth as a mode of functionality of the meaning. An attempt is made to clarify the interdependence of “post-truth” with the daily background practices. The concept of “post-truth” is based on the problematization of veracity in relation to dynamic development and expansion of communicative environment. This concept is attributed not only to political reality, but also influences the cultural, artistic and everyday life. The article indicates the key characteristics of post-truth: pluralism, fragmentation, consumer nature of truth, instrumentality, contextuality, post-publicity as an environment for people’s communication using technical means. A hypothesis is substantiated, according to which the “background expectations” as an important element of daily routine are one of the crucial conditions for functionality of meaning in the mode of post-truth. The goal of thus article consists in problematization of the concept of “post-truth” through correlation of its characteristics with the logic of routine thinking, as well as in indication of certain trends in the culture of post-truth. The relevance is justified by the need to clarify the meaning of the concept of “post-truth" for modern culture as a whole. The conclusion is made that the culture of post-truth is a more complex and multifaceted phenomenon, which is not limited by manipulations of public opinion and deception in mass media. Post-truth manifests as a condition for overcoming truth/falsehood dichotomy in the everyday life. In the culture of post-truth, emerges complete distrust in media (especially those that are considered reliable, such as documentaries). This contributes to the formation of “new truth” that rehabilitates the routine subjective experience, artistic language (post-documentary films), resulting in a so-called unveiling of total simulation through construction of individual, subjective perception in the media reality.