The notion of time reversal has caused some recent controversy in philosophy of physics. The debate has mainly put the focus on how the concept of time reversal should be formally implemented across different physical theories and models, as if time reversal were a single, unified concept that physical theories should capture. In this paper, I shift the focus of the debate and defend that the concept of time reversal involves at least three facets, where each of them gives rise to opposing views. In particular, I submit that any account of time reversal presupposes (explicitly or implicitly) modal, metaphysical, and heuristic facets. The comprehension of this multi-faceted nature of time reversal, I conclude, shows that time reversal can be coherently said in many ways, suggesting a disunified concept.

时间倒转的概念在物理学哲学中引起了一些争议。辩论主要集中在如何在不同的物理理论和模型之间正式实施时间反转的概念上，仿佛时间反转是物理理论应捕捉的统一概念。在本文中，我转移了辩论的重点，并辩称时间倒转的概念至少涉及三个方面，每个方面都引起了相反的观点。特别是，我认为，任何关于时间倒转的描述都（明示或暗含）模态，形而上学和启发式方面为前提。我得出结论，对时间反转的这种多面性的理解表明，时间反转可以以多种方式连贯地表达，这暗示了一个统一的概念。