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 Posted:   Jul 8, 2015 - 6:41 AM   
 By:   Solium   (Member)

I've always believed "time" isn't a tangible thing, but instead a man made construct. This is why I don't believe time travel can ever be possible. To go back in time is to assume time is a thing, which it is not.

The only reality is that which our conscious minds can consume in any one moment. There's also our physical perception of time distorted by what our eyes and brains can read. So even if time was "real" which time takes presidence over another?

http://www.space.com/29859-the-illusion-of-time.html

 
 Posted:   Jul 8, 2015 - 6:50 AM   
 By:   johnjohnson   (Member)

"Time is an illusion. Lunchtime doubly so."

https://en.wikiquote.org/wiki/The_Hitchhiker's_Guide_to_the_Galaxy#Chapter_1

 
 
 Posted:   Jul 8, 2015 - 6:52 AM   
 By:   CinemaScope   (Member)

I dunno what time is, it seems just another word for existence. We live in this 'now' all of the time. The past is memory, & of course evidence all around us that it happened, & what is the future, just something we invent in our brains. You could go looney thinking about it all too much.

 
 
 Posted:   Jul 8, 2015 - 6:54 AM   
 By:   CinemaScope   (Member)

"Time is an illusion. Lunchtime doubly so."

https://en.wikiquote.org/wiki/The_Hitchhiker's_Guide_to_the_Galaxy#Chapter_1


Ha, that's the first thing that went through my mind when I read the thread, it's the only line I remember from the first episode.

 
 Posted:   Jul 8, 2015 - 7:01 AM   
 By:   Grecchus   (Member)

What's the combined speed of all photons in the Universe? What time does a photon record as it moves from the start of the Universe all the way to it's end?

 
 Posted:   Jul 8, 2015 - 7:11 AM   
 By:   Solium   (Member)

We all heard the catch 22 of time travel. If you went back in time and prevented your parents from meeting you wouldn't have been born, thus you wouldn't exist to go back in time.

Because of this quagmire some theorists try to explain this by suggesting every moment in time (or each new branching) creates a new reality in a different universe. The multiverse. So while you might stop to exist in one timeline, you would still exist in another. But I think that's stretching things.

Also keep in mind the fundamentals of quantum physics where (a) time is not observable in the quantum world, (or more precisely it only exists if we are looking at it.) and (b) do not abide by the known laws of nature that we are aware of.

 
 Posted:   Jul 8, 2015 - 7:53 AM   
 By:   Grecchus   (Member)

Take New Horizons, now closer to Pluto than it is to Earth.

Isaac Newton, one of the greatest of scientists, could have lived with the idea of a man-made object going there, especially when it came to using his mathematical formulations explaining how to get there.

He lived before Einstein. To Newton, no matter how far, or how close New Horizons was to either of those planets, the transit time for light would have been the same no matter where they were in the universe. He would have expected communications to have been instantaneous. There was no such thing as space-time when he lived.

 
 Posted:   Jul 8, 2015 - 7:54 AM   
 By:   Solium   (Member)

And because I'm on a role this morning, without the nuclear force atoms could not stay together. Without atoms there would be no mass. No matter, no us, no existence.

 
 Posted:   Jul 8, 2015 - 7:56 AM   
 By:   Solium   (Member)

Take New Horizons, now closer to Pluto that it is to Earth.

Isaac Newton, one of the greatest of scientists, could have lived with the idea of a man-made object going there, especially when it came to using his mathematical formulations explaining how to get there.

He lived before Einstein. To Newton, no matter how far, or how close New Horizons was to either of those planets, the transit time for light would have been the same no matter where they were in the universe. He would have expected communications to have been instantaneous. There was no such thing as space-time when he lived.


That's a very interesting thought!

 
 Posted:   Jul 8, 2015 - 8:36 AM   
 By:   Grecchus   (Member)

To Newton, a moment in time was inviolate. He lived his entire, enlightened life in the safe and secure knowledge that no matter how eternal space may have been in the mind of God, every single cubic millimetre of space experienced the same tick of the same clock uniformly. If he were to look through a telescope and wave to a friend who had travelled by spacecraft to another galaxy, and that same friend were to look through a telescope and wave back at Newton - they would have been communicating with one another at the same moment in time.

He lived in such a small world that even his big ideas involving infinity could not grasp the true scale of the reality we (try to) cope with today.

 
 Posted:   Jul 8, 2015 - 8:53 AM   
 By:   Solium   (Member)

To Newton, a moment in time was inviolate. He lived his entire, enlightened life in the safe and secure knowledge that no matter how eternal space may have been in the mind of God, every single cubic millimetre of space experienced the same tick of the same clock uniformly. If he were to look through a telescope and wave to a friend who had travelled by spacecraft to another galaxy, and that same friend were to look through a telescope and wave back at Newton - they would have been communicating with one another at the same moment in time.

He lived in such a small world that even his big ideas involving infinity could not grasp the true scale of the reality we (try to) cope with today.


I guess we can think of time as the delay between two realities then. Then there's the whole issue of speed and time. The faster you go "in space" the slower your time to those left behind. I believe astronauts living on ISS are a fraction of a second younger than those living on Earth in the same time frame. Same goes for clocks on orbiting satellites that have to be adjusted for their "time" difference.

 
 Posted:   Jul 8, 2015 - 9:28 AM   
 By:   WILLIAMDMCCRUM   (Member)

The sad thing is that religions (NO, DON'T START A VERBOTEN ARGUMENT...) have been saying this stuff for ages.

Buddhists and Hindus have always worked on the space/time transcendentalist model. The Christians and patriarchal religions call it 'omnipresence', the idea of dimensions where all space and time is one, where the future is already over (therefore prophecy) and simultaneously the past has in some ways not yet begun (therefore miracles? ... a sort of backward loop of redemption ... the spiral). The idea is that 'spiritually', 'God' or maybe also the inner self (the Hindu 'Atman') can travel through time at all rates of change simultaneously, and even though human beings are corporeally stuck in this frame of 60 seconds a minute, on a deeper level, some part of them, the 'soul' can travel at all rates of change simultaneously.

By that way of thinking, the 'divine' isn't 'outside of time' but more in it than we are.


Now it'd be premature to say that this is 'explained' by quantum theory or by relativity, or lightspeed theories, but it's not inconsistent with them. It's a shame these belief systems inevitably get sidetracked by a lot of loonies. 'You can point at the moon, but there's always someone who'll just stare at your finger'.

The infinitesimally small and the vastly big in space relate to this in the same way as in time. If you deal in infinite distances, then you come back mathematically to a unified point. After all, the universe after the big bang expanded from a point, so in a way, every pont in the universe is the centre. And every person. Which is what Hindus have been saying for yonks.

'I would not have you ignorant of this, .... that to the Lord, a day is as a thousand years and a thousand years is as one day'.


Now don't give David a headache and start a religious argument, that'll lock us all down. Some say meditation states put us in that sort of consciousness. 'Only way is to try it I suppose.

 
 Posted:   Jul 8, 2015 - 10:08 AM   
 By:   Solium   (Member)

Good points WILLIAMDMCCRUM.

I wonder what time is without humans? Higher animal lifeforms migrate and mate specific "times" of the year. But they are not aware of time. I would say those instincts are based more on physical forces.

Mating and migration are based on seasons. Seasons are based on the tilt of the Earth (or there be no seasons) and the Moon's gravity stabilizing the Earths rotation and orbit. (around the Sun)

 
 
 Posted:   Jul 8, 2015 - 10:13 AM   
 By:   CinemaScope   (Member)

Er...yeah, maybe. I the meantime we're born, live in the now, remember the past, look forward to the future, & die. And all the other stuff will remain just ideas & concepts.

 
 Posted:   Jul 8, 2015 - 10:18 AM   
 By:   WILLIAMDMCCRUM   (Member)

Er...yeah, maybe. I the meantime we're born, live in the now, remember the past, look forward to the future, & die. And all the other stuff will remain just ideas & concepts.


Maybe they're more. They're certainly more to the quantum bods, and some of the meditation people claim they're more to them too. I mean, if it can be UTILISED usefully then it's all worth the examination.

 
 Posted:   Jul 8, 2015 - 11:05 AM   
 By:   Grecchus   (Member)

Kurt Godel, you may remember, was the austrian logician who proved there are statements within a formal language system that can lead to the notion of undecideability.

The question, "is time an illusion," can be phrased in lots of different contexts. In order to understand the context, we would have to be clear on subtexts and precisely related issues.

Although I feel I can see where you're coming from, Sol, the truth is the question requires a level of insight and familiarity within the framework of physics which is far removed from my ability to actually provide an answer, if truth be told.

The answer could be given as a simple "yes" or "no." If that is the case, I can't say there is an answer I can give because I don't know if either of those responses is actually true or false. That's very probably the type of answer you'd get from someone like Noam Chomsky.

It's not being pedantic. The grammar is perfectly legal. It's just there is a tremendous amount of conceptual baggage that goes with the question which can be heavily interpreted in the literal sense or more philosophical leanings can be tempered within the framework of a lengthy answer. There'd still exist the very real possibility that any answer provided would be just as incomprehensible as the question itself.

 
 Posted:   Jul 8, 2015 - 11:24 AM   
 By:   WILLIAMDMCCRUM   (Member)

The Dalai Lama said in the Glastonbury interview with Alan Yentob that the great challenge for western education systems is to start teaching 'some kind of mind education', i.e. philosophy, psychology, transcendentalism, and even semantics etc., earlier.

It's been said by many educationalists that we need to teach things like economics to children, and philosophy fits that too.

We patronise kids far too much, assuming they can't hold these things. The result is that as adults, they have no entry point into self-awareness, because they never got the openings. Why shouldn't kiddies speculate on cosmology?

 
 Posted:   Jul 8, 2015 - 12:15 PM   
 By:   Grecchus   (Member)

Why shouldn't kiddies speculate on cosmology?

I do. smile

 
 Posted:   Jul 10, 2015 - 6:41 PM   
 By:   ST-321   (Member)

Of course Pluto was not yet discovered in Isaac Newton's era.

Newton did not believe that the speed of light was infinite though. During Newton's time the speed of light was measured using eclipse predictions & timings of Jupiter's moons by Ole Rømer.

From Wikipedia:

In his 1704 book Opticks, Isaac Newton reported Rømer's calculations of the finite speed of light and gave a value of "seven or eight minutes" for the time taken for light to travel from the Sun to the Earth (the modern value is 8 minutes 19 seconds).

 
 Posted:   Jul 10, 2015 - 6:59 PM   
 By:   gone   (Member)

best documentary ever done on this subject ...

The Fabric of the Cosmos - The Illusion of Time

https://www.youtube.com/watch?v=GpgGJaQfrgE

 
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