The concept of time is not an open question in physics—it is well established. Time emerges from existential events, as change cannot occur without existence and events. In this sense, time is an emergent property of the universe, manifesting through the changes that occur within it.
The widely accepted Big Bang model supports the idea that the universe has a definite beginning, whether it follows a cyclic pattern or originated from a singular event. This reinforces the notion that the universe, as we know it, did not always exist. The idea of a static, eternal universe has been discarded, and scientific progress must not be hindered by outdated assumptions about an ever-existing cosmos.
Even in cyclic universe models, the transition between existence and nonexistence implies a distinct demarcation. Within an existential state, events occur, leading to the emergence of time. However, within a nonexistent state, time has no meaningful interpretation. While there may be a temporal gap between successive phases of existence, the concept of time within a purely non-eventful state lacks significance for beings whose understanding is tied to event-driven existence.
This perspective highlights that time is meaningful only within an eventful existential state, as predicted by the Big Bang model, rather than as a continuously emerging entity in a noneventful state. At minimum, there should be a clear distinction between time in eventful and noneventful phases of existence.
Ultimately, the focus should be on understanding how time emerges within an eventful universe, rather than speculating about its presence in a noneventful existential state, where it would serve no purpose.
In summary, time emerges for existential events, and its absence in a noneventful state is best understood as a gap between successive periods of eventful existence. Rather than concerning ourselves with how long time ceases to exist in such a state, we should appreciate its presence within our eventful universe.
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