4230
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A-series expressions place things in time, and their truth varies; B-series is relative, and always true
[McTaggart, by Lowe]
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Full Idea:
A-series expressions include words like 'today' and 'five weeks ago', and can be true at one time and false at another; B-series expressions are like 'simultaneously', and are always true, if true at all.
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From:
report of J.M.E. McTaggart (The Nature of Existence vol.2 [1927]) by E.J. Lowe - A Survey of Metaphysics p.308
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A reaction:
A-series gives time separate existence, where B-series time is purely relational. Intuition favours the A-series, but how fast do events travel against this fixed background?
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22933
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We imagine the present as a spotlight, moving across events from past to future
[Broad]
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Full Idea:
We imagine presentness moving, like the spot of light from a policeman's bulls eye traversing the fronts of houses in a street. What is illuminated is present, what was illuminated is past, and what is not yet illuminated is the future.
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From:
C.D. Broad (Scientific Thought [1923], II)
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A reaction:
This is the 'moving spotlight' compromise theory, which retains the B-series eternal sequence of ordered events, but adds the A-series privileged present moment. Le Poidevin says Broad represents time twice over.
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6865
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A-theory says past, present, future and flow exist; B-theory says this just reports our perspective
[Le Poidevin]
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Full Idea:
The A-theory regards our intuitive distinction of time into past, present and future as objective, and takes seriously the idea that time flows; the B-theory says this just reflects our perspective, like the spatial distinction between here and there.
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From:
Robin Le Poidevin (Interview with Baggini and Stangroom [2001], p.174)
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A reaction:
The distinction comes from McTaggart. Physics seems to be built on an objective view of time, and yet Einstein makes time relative. What possible evidence could decide between the two theories?
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14022
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The only three theories are Presentism, Dynamic (A-series) Eternalism and Static (B-series) Eternalism
[Crisp,TM]
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Full Idea:
Three theories exhaust the options on time: presentism, dynamic eternalism (eternalism with the tensed dynamic A-series view of time, and the totality of events changing over time), and static eternalism (eternalism with the B-series).
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From:
Thomas M. Crisp (Presentism [2003], 2.4)
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A reaction:
I think the idea that reality is Static Eternalism is just a misunderstanding, arising from our imaginative ability to take a lofty objective overview of a very fluid reality. The other two are the serious candidates. Present, or Growing-block.
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14003
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Time is tensed or tenseless; the latter says all times and objects are real, and there is no passage of time
[Bourne]
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Full Idea:
Theories of time are in two broad categories, the tenseless and the tensed theories. In tenseless theories, all times are equally real, as are all objects located at them, and there is no passage of time from future to present to past. It's the B-series.
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From:
Craig Bourne (A Future for Presentism [2006], Intro IIa)
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A reaction:
It might solve a few of the problems, but is highly counterintuitive. Presumably it makes the passage of time an illusion, and gives no account of how events 'happen', or of their direction, and it leaves causation out on a limb. I'm afraid not.
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14005
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B-series objects relate to each other; A-series objects relate to the present
[Bourne]
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Full Idea:
Objects in the B-series are earlier than, later than, or simultaneous with each other, whereas objects in the A-series are earlier than, later than or simultaneous with the present.
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From:
Craig Bourne (A Future for Presentism [2006], Intro IIb)
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A reaction:
Must we choose? Two past events relate to each other, but there is a further relation when 'now' falls between the events. If I must choose, I suppose I go for the A-series view. The B-series is a subsequent feat of imagination. McTaggart agreed.
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22973
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The present moment, time's direction, and time's dynamic quality seem to be objective facts
[Price,H]
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Full Idea:
The flow of time seems to be an objective feature of reality because of 1) the present moment can be objectively distinguished, 2) time has an objective direction, of earlier and later, and 3) there is something objectively dynamic about time.
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From:
Huw Price (The Flow of Time [2011], 1.1)
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A reaction:
Price sets out to undermine all three of these claims, in implicit defence of a psychological view. I disagree with him.
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22986
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The C-series rejects A and B, and just sees times as order by betweenness, without direction
[Baron/Miller]
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Full Idea:
The C-series sees times not as directed, but as unchanging, and ordered in terms of the betweenness relation. The C-theory also asserts that the A-series and B-series do not exist.
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From:
Baron,S/Miller,K (Intro to the Philosophy of Time [2019], 1.2)
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A reaction:
This is McTaggart's idea. Compare this with A-series ordering by past, present and future, and B-series ordering by earlier-than, later-than and simultaneous. The main point is that A and B have a direction, but C does not.
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