This philosophical reflection examines the relationship between duration and change, challenging the long-standing prejudice that equates duration with immutability. The author argues that because no truly unchanging entities exist in reality, duration must be understood as a dynamic process. The text proposes viewing duration either as a carrier of changes, similar to a modulated signal, or as the adventive arrival of non-objectual realities from the future. A central theme is the distinction between accidental changes and the true event, which is internally integrated into a unified whole. Within such an event, individual phases of change become significant indicators of an underlying non-objectual movement. By redefining movement and potentiality, the work suggests that identity is maintained not through stasis, but through the organized integration of changes and an active orientation toward the future. Ultimately, the text shifts the focus from static beings to a network of events that derive their unity from internal, non-objectual origins.