In the modern world of total technologization, scientific knowledge devoid of worldview correction (humanitarian expertise) carries a threatening tendency of self-denial: without a constant, philosophically correct transformation of objective knowledge about certain fragments (branches) of the surrounding reality into human knowledge (questions) about itself, the practical effectiveness of such knowledge inevitably accumulates in itself the threat of practical helplessness. Aim and the tasks of the research. Based on an in-depth analysis of the category of existence, as well as on modern philosophical reflections on the methodological and cognitive insolvency of the idea of the world, to find out the real meaning of those changes that this idea meaningfully undergoes in the conditions of the modern total technologization of human life. The research methodology. From a methodological point of view, the author prefers a dialectical approach, considering the analyzed phenomena, regardless of the mode of their reality, in their development and internally contradictory essence. H. Plesner’s theory of eccentric positionality serves as a certain base point for the analysis of human nature and, accordingly, the world of human existence. Research results: The problematic existence of the world and the epistemological «failure» of the corresponding category, declared in some modern philosophical reflections, are connected exclusively with its anthropological and worldview function, which is based on the fundamental uncertainty of a man’s place in the world. The «worthlessness» («futility») of worldview thematization is derived from the allencompassing inability of the human figure in the world, from that «emptiness» and «invisibility» (specific own transparency) of the spiritual dimension of human existence, on which, however, this existence is based. Discussion. The human «option» of fulfilling the unity of living being can be characterized as extremely intense. In this variant, the phylogenetic line of development turns into an ontogenetic point of worldliness devoid of predetermined content, a fundamentally new type of integration. The horizons of such integration far exceed primarily because of its understanding. And the subject of such a meaningful life is forced to integrate everything that happens to him every time into a certain system (synthesis) of the world. That subjectivity the world has distinguishes the subject from the thing. Subjectivity and the world mutually belong to each other - they are correlative. A thing exists because it is what it is. The subject (and with it his world) does not exist like that. A subject is how and to what it relates. But the relation «how» and «to what» is not carried out completely anew and isolated every time, but exists in its multiplicity in a certain relationship. Each individual case, each individual action (method of action) acquires its meaning from a wider, structured context – in whole or in part. This context is the «world», the «life world» of the real subject, or the «world» as an anthropological idea. Conclusions. The task of modern humanitarianism is not only to find opportunities for rational use of the fact of the fundamental openness of the human being, but also to cultivate the ability to reconcile a man with himself, to accept himself. This gives us certain reasons to hope for the enduring significance of worldview thematization. Criticism regarding the seemingly paradoxical conclusion that to become a man, one must already be one, could be considered fair, but only if one does not take into account the principled nature of such an aphoristic position, because this is exactly how the human world exists - as the art of tolerance uncertainty.