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Undecidability, Uncomputability, and Unpredictability Essay Contest
December 24, 2019 - April 24, 2020
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What Is “Fundamental”
October 28, 2017 to January 22, 2018
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Wandering Towards a Goal
How can mindless mathematical laws give rise to aims and intention?
December 2, 2016 to March 3, 2017
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Trick or Truth: The Mysterious Connection Between Physics and Mathematics
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How Should Humanity Steer the Future?
January 9, 2014 - August 31, 2014
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It From Bit or Bit From It
March 25 - June 28, 2013
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Questioning the Foundations
Which of Our Basic Physical Assumptions Are Wrong?
May 24 - August 31, 2012
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Is Reality Digital or Analog?
November 2010 - February 2011
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What's Ultimately Possible in Physics?
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The Nature of Time
August - December 2008
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RECENT POSTS IN THIS TOPIC

Pavel Poluian: on 5/18/20 at 23:09pm UTC, wrote In middle ages latin language the word spacium had akso a meaning of time. ...

Ilgaitis Prusis: on 5/16/20 at 10:11am UTC, wrote Dear Arto, Very good essay of Time. I have some remarks about Time. Time...

sherman jenkins: on 5/14/20 at 20:49pm UTC, wrote Arto: A new era dawns.  Old questions become quaint and historical.  Is...

Irek Defee: on 4/25/20 at 12:55pm UTC, wrote Dear Arto, In your essay you raise the hard question about something...

Lachlan Cresswell: on 4/25/20 at 6:03am UTC, wrote Dear Professor Annila, A most interesting and enjoyable essay on time! It...

Satyavarapu Gupta: on 4/23/20 at 20:00pm UTC, wrote Respected Prof Arto Annila, Thank you for wonderful essay on time... Your...

H.H.J. Luediger: on 4/23/20 at 19:21pm UTC, wrote Dear Arto Annila, already the sine function sin(wt)=sin(phi) becomes...

David Brown: on 4/23/20 at 16:33pm UTC, wrote “… we cannot present any evidence of a parallel reality.” I suggest...


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FQXi FORUM
September 17, 2021

CATEGORY: Undecidability, Uncomputability, and Unpredictability Essay Contest (2019-2020) [back]
TOPIC: A Matter of Time by Arto Annila [refresh]
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Author Arto Annila wrote on Apr. 23, 2020 @ 15:46 GMT
Essay Abstract

In the spirit of ancient atomism, the quantum of light was renamed the photon, the fundamental element of everything. Since the photon carries energy on its period of time, a flux of photons embodies a flow of time. The flows of quanta naturally select optimal paths, i.e., geodesics, to level off energy differences in the least time. While the flow equation can be written, it cannot be solved because the flows affect their driving forces, which in turn affect the flows, and so on. Since the forces, i.e., causes, and motions, i.e., consequences, cannot be separated, the future remains unpredictable. Similarly, when a computation affects its own course, it remains uncomputable. And a problem remains undecidable when time does not advance, as the flows of quanta, instead of finishing up, get caught up in circulating.

Author Bio

A former professor of biophysics at the University of Helsinki

Download Essay PDF File

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David Brown wrote on Apr. 23, 2020 @ 16:33 GMT
“… we cannot present any evidence of a parallel reality.” I suggest that there are now 2 evidential indications for alternate universes, specifically, string theory with the finite nature hypothesis in the form of a 72-dimensional, holographic, digital computer. Consider 2 hypotheses: (1) dark-matter-compensation-constant = (3.9±.5) * 10^-5 and (2) the Riofrio-Sanejouand cosmological model is approximately correct (except for the Koide cutoff and the Lestone cutoff). Am I wrong? Consider Milgrom’s MOND, the flyby anomaly, and the problem of precisely measuring Newton’s big G. Also consider the following article by Pipino:

Pipino, Giuseppe. "Evidences for Varying Speed of Light with Time." Journal of High Energy Physics, Gravitation and Cosmology 5, no. 2 (2019): 395-411.

Is Pipino wrong? Is it possible that during each Planck time interval, precisely one unit of Fredkin-Wolfram energy is transferred from the boundary of the multiverse into the interior of the multiverse (except for Wolfram's Reset)?

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H.H.J. Luediger wrote on Apr. 23, 2020 @ 19:21 GMT
Dear Arto Annila,

already the sine function sin(wt)=sin(phi) becomes trivial or tautological - whichever you prefer - after phi exceeds 2pi. Could it be that PHASE (constellation) is 'real' and TIME illusionary?

Heinz

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Satyavarapu Naga Parameswara Gupta wrote on Apr. 23, 2020 @ 20:00 GMT
Respected Prof Arto Annila,

Thank you for wonderful essay on time... Your words......

Why does time move forward?

The preconceived idea that ever-increasing disorder is what directs the arrow of time is deeply rooted in contemporary physics. Our own experience is that also ordering takes time. For exam-ple, we see that order increases when water freezes, and we see that disorder increases when the ice melts.......

In Dynamic Universe Model, time flows in one direction only. Regarding other ethical and scientific principles of this model I hope you will have CRITICAL examination of my essay... "A properly deciding, Computing and Predicting new theory’s Philosophy".....

Best Regards

=snp ,

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Lachlan Cresswell wrote on Apr. 25, 2020 @ 06:03 GMT
Dear Professor Annila,

A most interesting and enjoyable essay on time!

It is definitely one of my favourite topics.

Early on you state: “We readily use notions of time: just in time; time flies; only time will tell. Yet we have a devil of a time to define time itself. We use time to relate events to one another, but we are not quite able to relate the concept itself to anything. Why is time instinctively felt on the one hand, but beyond our ken on the other? I have managed to produce a non self-referential definition of time using the Planck-Einstein equation and a better understanding of what is meant by a ‘clock’. The definition then removes all time paradoxes and makes the understanding of the flow of time easy to grasp.

However the arrow of time is a much more difficult concept, which I discuss briefly in my essay “Wandering towards a ‘Theory of Everything’ and how I was stopped from achieving my goal by Nature”, where when I look at Loschmidt’s paradox, and the philosophy of presentism.

My TOE brings up the notion of absolute time as the iteration of a computational TOE, and I eventually get to a position where I dispense with time altogether from my ontological framework, although it (time) is quite handy when dealing with mathematical algorithms.

In your conclusion you say: “Time occupied the minds of both Newton and Einstein. Now the issue is neither about absolute nor relative time but about tangible time – the quantum is the matter of time.” I agree with this entirely, based on what I perceive the ‘quantum’ to be. In my case the quantum is the energy embodied in a defined volume of space.

Best wishes on your interesting essay.

Lockie Cresswell

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Irek Defee replied on Apr. 25, 2020 @ 12:55 GMT
Dear Arto,

In your essay you raise the hard question about something rather than nothing which has been asked many times but no answer whatsoever been in sight. I got an idea how to tackle this by the TOE based on uncomputability and sketched some answer in my essay.

Yståvällisin Terveisin,

Irek

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sherman loran jenkins wrote on May. 14, 2020 @ 20:49 GMT
Arto:

A new era dawns.  Old questions become quaint and historical.  Is the whole community ready?  Or is physical reality too dangerous for our collective understanding at this time? 

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Ilgaitis Prusis wrote on May. 16, 2020 @ 10:11 GMT
Dear Arto,

Very good essay of Time.

I have some remarks about Time.

Time itself does not exist. There are only motions. Motion is used as the time standard. The time is handy way to compare motions. Universal time (expansion rate of Universe) is irreversible. Local movements can be reversible, i.e., the local time can be reversible. More in: About Arrow of Time. http://viXra.org/abs/1902.0495.

More over, time have 3 dimensions. One in direction Past – Future, and two dimensions of Present. Second dimension of Present is actual only in cosmic distances. More in: Pioneer anomaly and Dimensions of Time. http://viXra.org/abs/1806.0192.

Best regards

Ilgaitis

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Pavel Vadimovich Poluian wrote on May. 18, 2020 @ 23:09 GMT
In middle ages latin language the word spacium had akso a meaning of time.

So, the photones fill the space representing the connection of time and distance as speed imfluencing the relativistic proportions of measuring mass and the speed of the time itself.

Well, this is the continuation of the story with a sort of new turn for us to cinsider.

Thank you for your interesting apprach being explained.

P. Poluian and

D. Lichargin

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