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The B-theory of time, also called the "tenseless theory of time", is one of two positions regarding the temporal ordering of events in the philosophy of time.B-theorists argue that the flow of time is only a subjective illusion of human consciousness, that the past, present, and future are equally real, and that time is tenseless: temporal becoming is not an objective feature of reality.
In the first mode, events are ordered as future, present, and past.Futurity and pastness allow of degrees, while the present does not. When we speak of time in this way, we are speaking in terms of a series of positions which run from the remote past through the recent past to the present, and from the present through the near future all the way to the remote future.
Endurantism or endurance theory is a philosophical theory of persistence and identity. According to the endurantist view, material objects are persisting three-dimensional individuals wholly present at every moment of their existence, which goes with an A-theory of time .
Perdurantism or perdurance theory is a philosophical theory of persistence and identity. [1] The debate over persistence currently involves three competing theories—one three-dimensionalist theory called "endurantism" and two four-dimensionalist theories called "perdurantism" and "exdurantism".
Perdurantism—or perdurance theory—is a closely related philosophical theory of persistence and identity, [4] according to which an individual has distinct temporal parts throughout its existence, and the persisting object is the sum or set of all of its temporal parts.
Beyond philosophy, its applications include the use of ontologies in artificial intelligence, economics, and sociology to classify entities. [22] In psychiatry and medicine, it examines the metaphysical status of diseases. [23] Meta-metaphysics [d] is the metatheory of metaphysics and investigates the nature and methods of metaphysics. It ...
The theory of relativity does not have a concept of absolute time because there is a relativity of simultaneity. An event that is simultaneous with another event in one frame of reference may be in the past or future of that event in a different frame of reference, [ 6 ] : 59 which negates absolute simultaneity.
Growing block theory should not be confused with block universe theory, also known as eternalism. The growing block view is an alternative to both eternalism (according to which past, present, and future all exist) and presentism (according to which only the present exists).