This text presents a philosophical analysis of the relationship between non-being (TO MÉ ON) and the possibilities of human knowledge. It draws upon the Aristotelian tradition, which asserts that recognizing the being of an object is an essential prerequisite for it to become an object of knowledge. The author focuses on critiquing an approach that a priori reduces non-being to mere 'nothingness.' Such a radical negation effectively closes the path to any deeper investigation before it can even begin. The work demonstrates that if a researcher prematurely rejects the ontological status of non-being, they forfeit the opportunity to discover its potential characteristics or the ways in which it might manifest within our cognition. The objective is to challenge the dogmatic identification of non-being with absolute nothingness and to emphasize the need for a more open ontological framework. Such an approach is crucial for overcoming epistemological barriers that hinder the understanding of complex aspects of reality existing at the boundaries of traditional ontology and which might require new methodological approaches to comprehend what we typically define as non-existent or absent.