Author timedefiner

References (1)

timedefiner Leave a comment

Baron, S., Miller, K., & Tallant, J. (2022). Out of Time. Oxford University Press.

Brown, H. R. (2005). Physical Relativity: Space-Time Structure from a Dynamical Perspective. Oxford University Press.

Earman, J., & Norton, J. (1987). What price spacetime substantivalism? The hole story. The British Journal for the Philosophy of Science, 38(4), 515-525. https://doi.org/10.1093/bjps/38.4.515

Frigg, R., & Nguyen, J. (2020). Modelling Nature: An Opinionated Introduction to Scientific Representation. Springer. https://doi.org/10.1007/978-3-030-35164-5

Hoefer, C. (1996). The metaphysics of space-time substantivalism. The Journal of Philosophy, 93(1), 5-27. https://doi.org/10.2307/2941016

Knox, E. (2013). Effective spacetime geometry. Studies in History and Philosophy of Modern Physics, 44(3), 346-356. https://doi.org/10.1016/j.shpsb.2013.04.003

Ladyman, J. (1998). What is structural realism? Studies in History and Philosophy of Science Part A, 29(3), 409-424. https://doi.org/10.1016/S0039-3681(98)80129-5

Lam, V., & Wuthrich, C. (2018). Spacetime is as spacetime does. Studies in History and Philosophy of Modern Physics, 64, 39-51. https://doi.org/10.1016/j.shpsb.2018.04.003

Leibniz, G. W. (1989). Philosophical Essays (R. Ariew & D. Garber, Trans. & Eds.). Hackett.

Mach, E. (1919). The Science of Mechanics: A Critical and Historical Account of Its Development. Open Court.

McTaggart, J. M. E. (1908). The unreality of time. Mind, 17(68), 457-474. https://doi.org/10.1093/mind/17.4.457

Nerlich, G. (1994). The Shape of Space. Cambridge University Press.

Oxford English Dictionary. (2024). Time. Oxford University Press.

Pooley, O. (2013). Substantivalist and relationalist approaches to spacetime? In R. Batterman (Ed.), The Oxford handbook of philosophy of physics (pp. 522-548). Oxford University Press

Quine, W. V. O. (1960). Word and Object. MIT Press.

Quine, W. V. O. (1969). Ontological Relativity and Other Essays. Columbia University Press.

Reichenbach, H. (1956). The Direction of Time. University of California Press.

Rovelli, C. (1997). Halfway through the woods: Contemporary research on space and time. In J. Earman & J. Norton (Eds.), The Cosmos of Science (pp. 180-223). University of Pittsburgh Press. https://doi.org/10.2307/j.ctt7ztc0.10

Rovelli, C. (2018). The Order of Time. Allen Lane.

Suarez, M. (2010). Scientific representation: Against similarity and isomorphism. International Studies in the Philosophy of Science, 24(1), 1-25. https://doi.org/10.1080/02698591003646471

Surya, S. (2019). The causal set approach to quantum gravity. Living Reviews in Relativity, 22, 5. https://doi.org/10.1007/s41114-019-0023-1

van Fraassen, B. C. (1980). The Scientific Image. Oxford University Press. Wald, R. M. (1984). General Relativity. University of Chicago Press.

For the Academics

timedefiner Leave a comment

Here are three academic papers addressing issues of Time in physics. The papers are set out on following pages of this site, but the Abstract and Conclusion of each paper are shown below:-

1. Temporal Representation and the Conditional Redundancy of Time: A Semantic, Empirical and Metaphysical Audit

Abstract

Temporal and spatiotemporal vocabulary is indispensable in scientific representation, but indispensability alone does not determine ontology. This paper develops a three-part conceptual audit — semantic, empirical, and metaphysical — to identify where additional metaphysical assumptions enter arguments for the fundamentality of time or spacetime. The empirical evidence usually taken to support temporal or spatiotemporal structure constrains change and the physical relations and dynamics used to represent it: clocks record regular change-events, geometry encodes relations among those events, and directional asymmetries arise from statistical structure and boundary conditions. None of this, by itself, settles whether a temporal or spatiotemporal posit is an additional ontological constituent. An Ontological Necessity Criterion distinguishes representational indispensability from ontological fundamentality: a posit is required only if removing it leaves empirical or explanatory content unaccounted for after the relevant roles have been recovered. The resulting Conditional Redundancy Thesis holds that if those states, relations, and dynamics discharge the roles attributed to time or spacetime, then any further temporal or spatiotemporal constituent is redundant. The criterion is compatible with spacetime functionalism, effective geometry, and non-spatiotemporal programmes in quantum gravity, and is offered as a test for when temporal vocabulary licenses ontological commitment.

Conclusion

Temporal and spatiotemporal vocabulary is indispensable in scientific representation, but representational indispensability does not by itself determine ontology. The semantic audit shows how polysemy, metaphor, indexicality, and reification can facilitate transitions from representational claims to ontological ones without making the intervening premise explicit. The empirical audit shows that experimental results constrain physical changes, correlations, and geometric relations, while leaving open the metaphysical interpretation of those results. The metaphysical audit then asks whether the roles attributed to time or spacetime can be discharged by change and lawful dependence relations.

The Ontological Necessity Criterion isolates the methodological question that remains: once the relevant empirical and explanatory roles have been accounted for, is there any residual work that requires a temporal or spatiotemporal posit as an additional constituent of reality? If there is, ONC permits the posit. If there is not, representational indispensability does not establish ontological necessity. The Conditional Redundancy Thesis is therefore conditional rather than eliminative in advance: temporal and spatiotemporal ontology is redundant where change and relational structure discharge all the relevant empirical and explanatory work. The paper does not claim to have shown that no temporal or spatiotemporal ontology can satisfy this requirement. Its narrower claim is methodological: the move from indispensable temporal representation to ontological fundamentality requires an additional premise, and that premise must be supported by evidence or explanation rather than inferred from representational necessity alone. The resulting framework is compatible with realist, relational, functionalist, and emergent approaches, provided their ontological commitments are assessed separately from the representational vocabulary used to formulate them. Its contribution is consequently not a new physical theory of time, but a diagnostic framework for keeping semantic, empirical, and metaphysical claims distinct.

2. What Physical Evidence Requires Us to Add Time to Our Ontology? An Ontological Audit of Temporal Structure in Physics

Abstract

What physical evidence requires us to add Time to our ontology?

To address this question, the paper develops a systematic ontological audit. The audit distinguishes five levels at which claims about Time may be made: empirical phenomena, mathematical representation, physical structure, semantic interpretation and ontological commitment. The framework is applied to Newtonian mechanics, special relativity, proper time, general relativity and competing interpretations of temporal structure. Particular attention is given to the transitions through which a mathematical or structural description may acquire a stronger ontological interpretation.

The paper does not dispute the physical reality of temporal structure or measurable proper-time intervals, nor does it claim that Time has been demonstrated not to exist. Its narrower claim is that the physical significance of temporal structure does not, by itself, establish an additional independently existing entity corresponding to Time. Recent work has independently challenged aspects of conventional temporal ontology by identifying Time with change, interpreting clock measurements relationally, distinguishing mathematical representation from physical ontology, and analysing category errors in temporal discourse. The present paper does not seek to replace these approaches with another ontology. Its contribution is instead to provide a common analytical framework for identifying what each approach takes to be physically established, mathematically represented, structurally significant and ontologically added.

The resulting conclusion is deliberately limited: physics establishes physically significant temporal structure, but the additional ontological reality of Time, over and above that structure and the physical relations it describes, has not been demonstrated to be physically necessary.

Conclusion

This paper began with a deliberately narrow question:

What physical evidence requires us to add Time to our ontology?

To address that question, it developed a systematic ontological audit distinguishing five levels at which claims about Time may be made:

Empirical → Mathematical → Structural → Semantic → Ontological

The purpose of the audit was not to determine which ontology of time is ultimately correct. It was to identify what is physically established, how it is mathematically represented, what physical structure is encoded, how that structure is described, and where additional ontological commitments enter.

Applied to Newtonian mechanics, special relativity, proper time, spacetime geometry and competing interpretations of temporal structure, the audit revealed a consistent result. Physics establishes physical change, measurable temporal intervals, invariant proper time and physically significant temporal structure. None of these conclusions is disputed here. The question is whether they also establish an additional ontological reality corresponding to Time.

The analysis suggests that this further conclusion does not follow automatically from the physics. If Time is identified with temporal structure, proper time or the temporal aspect of spacetime geometry, then physics provides strong grounds for its physical significance. If Time is taken to denote an additional independently existing reality over and above those structures, an additional ontological commitment has been introduced and requires its own justification.

The principal contribution of the paper is therefore methodological rather than metaphysical. It does not propose a new ontology of Time, nor does it seek to replace existing ontologies with an alternative account. Its contribution is the development and application of a systematic audit capable of distinguishing what is empirically established, mathematically represented, structurally significant and ontologically added in arguments about temporal reality.

The resulting conclusion is deliberately limited. The audit does not demonstrate that Time does not exist. Nor does it show that broader metaphysical interpretations of temporal reality are illegitimate. It shows something narrower: the physical evidence and theoretical structures examined here do not by themselves demonstrate the necessity of an additional Time ontology beyond the temporal structure already established by contemporary physics.

The broader implication is methodological. Physical theories may underdetermine ontology. Where they do, further ontological commitments remain possible, but they should be recognised as commitments requiring additional argument rather than as conclusions already established by the empirical evidence itself.

The guiding principle of the audit may therefore be stated simply:

Physics establishes temporal structure. Additional ontology requires additional justification. In the case of Time, that additional justification remains to be shown

3. Reconstructing Time and Spacetime from Change.

Abstract

This paper develops an empirically grounded and historically informed reconstruction of time and spacetime. Drawing on a long tradition from Aristotle and Leibniz to Mach and Einstein, I argue that all empirical evidence typically taken to support temporal or spatiotemporal structure—ageing, decay, motion, oscillation, and gravitational phenomena—is evidence of change and relational organisation, not of independent temporal or spatiotemporal entities. Clocks register regular change‑events, and spacetime geometry encodes relations among such events; neither measurement detects a substance with causal powers. A semantic analysis shows that the polysemy of time and space has encouraged the reification of coordinate structures in physical models, generating pseudo‑problems concerning temporal passage, spacetime “flow,” and the ontology of the metric field. I reconstruct duration, persistence, spatiality, and spacetime structure in terms of change‑events and their relations, situating this account within contemporary relational and emergent approaches in the philosophy of physics. The resulting Redundancy Thesis holds that time and spacetime are representational tools derived from patterns of change rather than fundamental constituents of the physical world. This framework clarifies the conceptual status of temporal and spatiotemporal parameters in scientific practice and contributes to ongoing debates in the history and philosophy of science concerning the interpretation of physical models. The resulting framework provides a parsimonious interpretation of temporal and spatiotemporal structure grounded in change and relational organisation.

Conclusion

This paper has argued that the empirical and conceptual roles attributed to time and spacetime can be reconstructed entirely from change and relational structure. All evidence typically taken to support temporal or spacetime ontology—ageing, decay, motion, oscillation, and gravitational phenomena—is evidence of change, not of independent temporal or spatiotemporal entities. Clocks register regular change‑events, and spacetime geometry encodes relations among such events; neither measurement detects a substance with causal powers.

A semantic analysis shows that the polysemy of time and space has encouraged the reification of coordinate structures in physical models. Distinguishing the abstract, indexing sense of these terms from their experiential, metaphorical senses dissolves familiar pseudo‑problems concerning temporal passage, spacetime “flow,” and the ontology of the metric field. Once these ambiguities are removed, the empirical record supports a minimalist ontology in which change is primary and temporal and spatiotemporal concepts are representational tools.

Reconstructing duration, period, persistence, spatiality, and spacetime structure in terms of change‑events and their relations yields the Redundancy Thesis: if every empirical and explanatory role attributed to time or spacetime can be discharged by change and relational organisation, then time and spacetime are not fundamental constituents of the physical world. This perspective coheres with time‑free or relational formulations in quantum gravity and with the dynamical spacetime of GR, both of which treat temporal and spatiotemporal structure as emergent or representational rather than primitive.

The resulting framework clarifies the conceptual status of temporal and spatiotemporal parameters in physical theory. It supports relational and emergent approaches to spacetime, dissolves pseudo‑problems generated by semantic conflation, and offers a unified, empirically grounded basis for interpreting the structure of physical models. If change is the fundamental empirical datum, then time and spacetime are best understood as abstractions we impose to organise patterns of change, not as elements of the ontology of nature.

This reconstruction fulfils the programme outlined in the introduction: to clarify the empirical and conceptual roles of time and spacetime by grounding them in change and relational structure, and to dissolve the pseudo‑problems that arise from reifying representational frameworks.

What follows if the frameworks are only scoring change

timedefiner Leave a comment

The pages so far have kept to a modest claim, and it is still a claim, not a finding forced by the examples alone. What is seen is change. On the distinction offered here, the word “time” either gathers that change or measures it. Three vectors of place fix a static configuration. Motion appears in the account when change of place is added to the frame. Nothing in that yet requires a further thing that flows, causes, or contains. “Yet” is the point of this page. It says what follows if the claim is granted, and what would count against granting it.

If the claim is granted, several familiar pictures lose their support. They do not become false as experiences. They become descriptions that were doing more work than the evidence so far has required.

Events do not, in general, run back. An egg scrambles and does not unscramble. Heat leaves a cup and does not gather itself again. A body accumulates damage it does not spontaneously undo. This one-way character is often called the arrow of time, as if time itself pointed.

A scale does not point. The dimension of change can be read in either direction on the page; the numbering is ours. What does not reverse, in these cases, is the change. In anything compounded of many processes, the processes do not all undo together. Energy has spread. The earlier arrangement is not recovered by wishing the clock label to run backwards.

So the direction, on this account, belongs to change, and it is not one direction for the world as a single object. A simple isolated process may be reversible. A scrambled egg is not one process. It is a vast number of changes that will not reassemble. The proposal is that there are as many arrows as there are such histories, not a universal time with a single head. “Arrow of time” borrows the direction from the changes and then awards it to the word. Theories of asymmetry are not thereby replaced; the note below says which family this sentence is nearest to.

A diamond sits, barely weathered, for what the surrounding clocks call millions of years. It is tempting to say that time passed for it, or that it persisted in time, as if existence were a journey through a medium and the medium had to be supplied.

Look at the stone. Between the changes that do happen to it, it is as it is. Nothing further is occurring in it. The Earth’s rotations, the clocks, the lives around it, are other changes, used afterwards to put a number on the gap. The number is a comparison with those external processes. It is not, on this reading, a substance the diamond was soaking in, and not a tunnel it had to travel in order to still be there.

This is the persistence worry in ordinary dress. An object exists. To exist from one of our labels to a later label, it seems to need a stretch of time to exist in. The proposal is that the stretch is the comparison. Unchanging, the object simply is. The external series calibrates the interval. It does not confer a temporal interior on the object. Ageing is different, and it does not rescue the picture: a body persists through change because the chemical processes continue, not because a carpet of time is rolled out ahead of it. A reader who thinks existence itself requires a temporal dimension has a real objection. It is met only if no work is left for that dimension once the comparison is stated. That is the residue test again.

Grant the scoring claim, and two words that seemed to prove time’s existence can be restated without it.

A period is a stretch picked out by a beginning and an end. The jog starts, the jog stops. Those two changes bound the stretch. Until some external regular change — a stopwatch, the Earth’s rotation — is set beside it, the stretch has no size. The size is the comparison. “Half an hour” means: this much of the clock’s constant change accumulated between the start and the stop. It does not mean: a portion of a temporal stuff was used up.

A duration is that size. It is how much change the chosen scale assigns to the stretch. Two durations differ when the compared changes differ, including when two clocks take different paths and disagree on reunion. Duration, on this restatement, is a reading, not a piece of time cut from a block.

Interval is the same notion under another name: the comparison attached to the gap between two events. For a single unchanging object, considered alone, this account finds no interval inside it. The interval appears when an outside series is allowed to score the gap. That is why a universal time is not required, here, to make sense of “how long.” How long is how much of some change, set against some other change.

A few further claims usually smuggle the extra object back in. They loosen, on the same terms, if the scoring claim is granted. They are not each given a theory of their own.

Ageing, in the cases already used, is the biochemical sequence, scored by whatever clock we trust, not time allowing a body somewhere to grow old. The past, on this reading, is an earlier configuration of things, remembered or recorded, not a place that still exists along a line. The future is a configuration that has not happened. A beginning of time, if it means anything empirical, is the first change we can talk about; with no change, the word has nothing to gather and nothing to measure. Travel into another configuration of the whole world is a fantasy about recreating every state at once, not a journey through a dimension shown to be already there, waiting.

None of these rephrasings is a proof that no further structure could ever be required. They are what follows if the frameworks are only scoring change. A residual fact — a prediction or an explanation that still cannot be stated in those terms — would count against the claim. This argument has not produced such a residue from the usefulness of the word alone. That is a statement about the argument, not a literature review. A residue offered from elsewhere would have to be met, not defined away.

One habit has been touched and not finished. Mathematics writes a single t through an equation, steady and universal inside the calculation. Physics has often spoken as if that letter were the universal flow the diamond was soaking in. Constancy of day and year makes the slide easy. It has not yet been looked at on its own.

Optional — for specialists.

The claims on this page are conditional on the scoring thesis, not a general elimination of temporal structure. If change and the relations used to compare it discharge the roles usually given to time, then the arrow, persistence, period and duration can be restated without a further temporal constituent. A residual prediction or explanation that cannot be so restated would count against the restatement.

Asymmetry is not treated as an intrinsic direction of a temporal substance. The one-way character of compounded processes is the sort of fact already approached through statistical structure, boundary conditions and coarse-graining (Reichenbach, 1956). The page’s point is only that this direction belongs to the changes, and that there is no single arrow for every history.

Persistence is treated as existence across a comparison, not as occupation of a temporal container. An unchanging object, considered alone, has no internal process for an interval to measure. The interval appears when an external series is used to score the gap. That is a claim about relevance, not a denial that the object exists, and not a thesis about whether past or future events are real.

McTaggart’s argument for the unreality of time, and the presentist, eternalist and growing-block family, are not the target. Those disputes concern the reality and extent of temporal structure granted as a topic. This page asks whether that topic has been distinguished from change and from the frameworks used to score it.

The criterion used to keep the claim conditional is set out in full in the accompanying paper.

Is time a concept made by humans or actually something that exists and flows forward?

timedefiner Leave a comment

Change ‘flows’ i.e. happens – Change is real.

Time is merely how we reference change. Time is ‘man-made’ as Einstein put it; i.e. an abstract noun (i.e. a human concept) , in both its two core meanings:-

  1. the dimension (measurement/calibration) of change rate. We calibrating changing position in, say, miles per hour – the per hour bit is time calibrating changing position.
  2. The collective ‘flow’ of change/change-events. time is to Change-events what Traffic is to vehicles – a non-specific collective noun.

Change (i.e. change of position aka motion) is real. Time is not.

Time doesn’t ‘flow’ – change ‘flows – look around you, the earth spinning, the tides turning, you breathing, atoms vibrating, quarks decaying…change and change events happening all around and within us. Where is Time…?Nowhere to be seen.

https://qr.ae/pGjYSv

How do I live in the 4th dimension?

timedefiner Leave a comment

The so called 4th dimension is Time. Time is the dimension of change.

(Dimensions are measurement sets.)

For example motion (changing position) is measured in, say, miles per hour. The per hour bit is time calibrating the rate of change, i.e. the rate of motion.

And you change (breathing, blood pumping etc), and everything around you changes (the earth spins). To live is to change.

So if you are alive you are changing…i.e. you are living in the 4th dimension.

https://qr.ae/pGjYci