This text presents a philosophical reflection arising from a discussion with Václav Němec and Jan Kuneš regarding the fundamental nature of being. The author critically examines the classical concepts of "an-sich" (in-itself) and "für-sich" (for-itself), expressing skepticism toward the possibility of isolated existence. The central argument posits that the universe is not designed for entities to exist in a state of pure self-containment. Instead, the author suggests that true existence is inherently relational, defined by being "for the Other" (für den Anderen). This principle is presented as a universal ontological necessity that applies not only to human beings but to all levels of reality, including physical entities like atoms. The author contends that no part of reality can truly exist or be understood in isolation from the rest of the universe. Consequently, any intellectual attempt to treat a being as strictly "in-itself" results in a virtual model or a conceptual abstraction rather than an encounter with genuine reality. The document thus underscores the interconnected and relational essence of all existence.