Modern understandings of time and space tend to position them as external frameworks that structure human life. This perspective raises fundamental philosophical questions concerning the relationship between temporal processes, change, and the uniqueness of human existence. This study aimed to analyze Gilles Deleuze's philosophical arguments concerning time-space and to explain how the process of becoming shapes unique and irreplaceable human existence. Employing a qualitative approach, this study adopted library research and philosophical-interpretative analysis of Deleuze's thought, particularly his works Difference and Repetition and The Logic of Sense. The findings revealed that time does not determine the unfolding of processes; rather, it is constituted through the synthesis of past, present, and future events. These processes unfold through horizontal and vertical interconnections involving multiplicity, singularity, contraction, and repetition. The relationship between Chronos and Aion demonstrated that human existence is constituted through temporal experiences characterized by both continuity and the emergence of novelty. The study concluded that human uniqueness is not determined solely by biological or social identity or inherent attributes, but emerges through the experience of becoming, shaped by interconnected events, memory, habits, and active reflection. This study offered an ontological understanding of human irreplaceability through Deleuze's philosophy of time-space, thereby extending philosophical discussions of subjectivity, singularity, and the meaningfulness of human existence in modern life.
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