On the Limits of Temporal Information Storage in the Universe

Abstract This paper presents a conceptual analysis of time grounded in the assumption that the universe operates under a single-present constraint. In this framework, only the current moment is physically instantiated, while past and future moments do not coexist as stored states within the universe. Time is treated not as an abstract parameter but as a succession of discrete moments, each becoming actual only through realization and immediately ceasing to exist as a physically accessible entity. The central claim is that the universe cannot retain or encode its own completed temporal states. Because any physical system exists strictly within the present moment, it cannot encompass, store, or contain information about a moment once that moment has elapsed. Consequently, temporal information is not cumulative within the universe itself, but is limited to what is instantiated in the present. This leads to a strict asymmetry between the lived present and all non-present moments. From this perspective, the totality of time cannot be identified with the universe as a physical whole. Instead, time must be understood as the ordered sequence of realized moments, rather than a container in which events persist. This conceptual boundary implies fundamental limits on temporal reversibility and renders models that rely on the physical accessibility of past or future states—such as time travel—conceptually incoherent within a single-present universe. The analysis does not propose a new physical theory, nor does it rely on empirical data or formal mathematical models. Rather, it aims to clarify the ontological assumptions underlying common intuitions about time, information, and temporal persistence. By explicitly identifying the limits of what the universe can physically contain, the paper seeks to contribute to ongoing discussions in the foundations of physics and the philosophy of time. Author: Ali Caner YÜCEL Date: 28 Ocak 2026