Philosophy

Philosophy

Arrow of Time, Past Hypothesis, and the Layer‑Phenomenological Model

Document Type : Scientific-research

Authors
Ahmad Ebadi 1
Amirpouya Danesh 2
1 Associate Professor of Philosophy, Faculty of Theology and Ahlulbayt's Studies, University of Isfahan, Isfahan, Iran
2 M.A. Student of Philosophy, Faculty of Theology and Ahlulbayt's Studies, University of Isfahan, Isfahan, Iran
10.22059/jop.2026.400046.1006940
Abstract
This article investigates the issue of the directionality of time and its origin at the intersection of physical theories and philosophical analysis. The main focus is on David Albert’s account of time, which—through the framework of the “Past Hypothesis”—seeks to explain temporal direction not as a conscious or empirical feature, but as a statistical consequence of the universe’s initial conditions in statistical mechanics. The paper first reconstructs this theory conceptually and analyzes it through the lenses of causality, time symmetry, and the entropy-increase condition. It then engages with critiques posed by contemporary philosophers and physicists, evaluating the effectiveness and limitations of this model in addressing the problem of time’s arrow. In light of the shortcomings of the Past Hypothesis, the article proposes a complementary theory that conceptualizes time as simultaneously physical, phenomenal, and abstract. Within this framework, time is analyzed across statistical and entropic mechanisms, subjective experience, and linguistic structures. Temporal directionality is viewed as the result of an interaction between physical and phenomenal layers, rather than the mere consequence of an initial condition. The “layer-phenomenal model of time” thus avoids reductionism and offers an interdisciplinary account that not only addresses statistical and entropic principles, but also articulates three fundamental conditions for temporal directionality by integrating philosophical, physical, phenomenological, and cognitive perspectives.
Keywords
Arrow of Time
Causality
Entropy
Past Hypothesis
Time Symmetry and Quantum Mechanics
Subjects
References
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Philosophy
Volume 23, Issue 2 - Serial Number 45
February 2026
Pages 151-175

  • Receive Date 05 August 2025
  • Revise Date 06 November 2025
  • Accept Date 12 January 2026