Does Time Really Exist, or Is It Just an Illusion?

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The discussion centers on the nature of time, with the original poster questioning its existence beyond a practical concept. They propose that only the present moment, or "now," truly exists, while the past and future are mere constructs of the mind. This leads to the idea that time may be an illusion, suggesting that our experiences and choices shape our perception of time. Other participants contribute by emphasizing the importance of change and the existence of the past, arguing that while we perceive time linearly, it serves as a mechanism for change in the universe. The conversation highlights the philosophical implications of time's existence and its relevance to both science and personal experience.
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G'day, First post here. Sorry if this is the wrong area.

really glad there is a physics forum. I'm hoping people actually are relatively qualified here because I'm totally a beginner and purely researching for my own general interest and would love for some people to explain some things to me as I've got some Ideas on time and space that I don't quite understand.

Ok so basically this is the way I'm seeing things with the universe and time etc... Please by all means feel free to prove me wrong as I'm only here sitting thinking about this stuff in my spare time, I'm not actually a studying student or anything.

I don't know if all this stuff has been accepted or not, but this is basically just some things I've been pondering on.



How does time, in a linear sense, actually exist? Other than as a practical idea.

I'm starting to believe there is only 1 thing that actually exists. - 1 thing that can only ever be proven to exist.

Which is, right now.

Now, obviously photos exist of the past and things SEEM to happen as 'time' rolls on.

BUT, that's not really enough for me.

Now you can say, events and experiences have HAPPENED, however, they don't exist NOW. They DID exist, but right now? no. Nothing of the past exists - every micro-mili-billi-nano second we are a new.

You could say there IS no past. It does not exist.

So time really doesn't exist?

Is it not an illusion of continuity?

Is continuity not an illusion in and of itself?

I *think* I'm really starting to grasp what Einstein meant when he said time is relative to the observer. Because it's an Idea, a practical tool for the mind to use, to operate through.

A choice.

Time 'rolling on' explained for myself - the Future doesn't really seem to exist either, only in our minds do we create fantasy scenarios and predictions but there is no future.

If there is no future, we really have a choice of an infinite amount of options.

I'm now starting to see that we can CHOOSE to see time in different ways.

choose to observe time in different ways.

Choose to EXPERIENCE time in different ways.

choose to experience NOW in different ways.

so, if time doesn't really exist, we really are only just experiencing now... in different ways.

we instantaneously create a new dimension of reality in each split choice we consciously or unconsciously choose to make.

I mean, do we not? IF I have option A and option B - and i choose A, then the reality path of A will unfold and B will cease to exist, however 'B' could've, but the determining factor was what I wanted to do more so at the end of the day.

So with that being said, in each moment we live, we create each moment.

We decide each moment.

We decide now.

We choose the life we want,

or what we 'perceive' we want, perceiving through the filter of our beliefs and definitions we hold about the world.

So if I might have a negative view towards some parts of the world, and choose to FEEL angry and uptight, thinking about the past, thinking about the future, is that not creating more time?

With experiencing less and more time. Ever heard of time flies when you're having fun?

I think the more you put yourself in the 'moment', the more you put youreslf in the 'now', the less of 'time' you will experience.

So if 'time' is an idea. Purely a practical idea, a 'mind creation'. It's like thinking inside your mind too much creates more and more time.

Ever been in that moment where you're enjoying yourself so much, you're totally OUTSIDE of your head, you feel GREAT, you're choosing joy, fun, excitement, time really flies past without you realising it. The experience would actually contain less of time.

Would that actually mean that the observer has somehow literally skipped 'time'? Or perhaps chosen to experience less of it as purely an idea?

I mean you could go with so many directions with this...

What's everyones thoughts with this so far>? Am I going in the right direction?
 
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This is not physics.
 
Red Leader said:
How does time, in a linear sense, actually exist? Other than as a practical idea.
Time is just a practical idea, like the entire math and physics. Time exists in the same sense as numbers or length exist: as a useful abstract concept.
 
Vanadium 50 said:
This is not physics.

thank you for being so helpful. I'm assuming you would use physics to prove this stuff, which I do not know that well... however, I just saw a philosophy area which might be better suited if someone wants to move it.
cheers.


A.T. said:
Time is just a practical idea, like the entire math and physics. Time exists in the same sense as numbers or length exist: as a useful abstract concept.

yeah, I guess talking to random people on my outings, this doesn't really seem to be common knowledge. I mean, I've seen a few threads, 'Is time infinite?' - how does that make sense if it doesn't exist? does it matter? is 'now' infinite? is there a measurement?

I think I'm really trying to say that there is something to do with the concept of 'now' that can really benefit society and may play into more dissolution of the societal limitations that seemed to be placed on the concept we have of time. I think the full realisation that time doesn't exist and only now exists is something we as society really haven't played around with much.
 
One nice short definition is "time is what prevents everything happening all at once".

You might find this selection of essays entered in a competition themed on the "the nature of time" http://fqxi.org/community/forum/category/10 of interest. The essays describe a wide selection of views on time from time being a "frozen river" by Cristinel Stoica to "time does not exist at all" in the quantum sense by Carlo Rovelli, while Sean Carroll contemplates the perhaps radical question, "What if time Really Exists?". The very thought of it! Pah!

As others have mentioned, this is perhaps all too philosophical for a science forum.
 
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kev said:
One nice short definition is "time is what prevents everything happening all at once".

You might find this selection of essays entered in a competition themed on the "the nature of time" http://fqxi.org/community/forum/category/10 of interest. The essays describe a wide selection of views on time from time being a "frozen river" by Cristinel Stoica to "time does not exist at all" in the quantum sense by Carlo Rovelli, while Sean Carroll contemplates the perhaps radical question, "What if time Really Exists?". The very thought of it! Pah!

Awesome, thanks very much! cheers for the link
 
kev said:
I do not see how it would benefit society and if anything it a dangerous idea. Why save up for a pension? I am not old now and if only now exist, I will never be old and therefore never need a pension. Do I need life insurance. No! I am not dead now and if only now exists I never will die! As others have mentioned, this is perhaps all too philosophical for a science forum.

haha, well I would exercise common sense - I don't mean to abandon time as a concept, but to actually be aware that it IS a concept in itself - rather than us being limited by time we can take more advantage of the concept of now. - Goals are totally ok for the future, it's the awareness of the tool to get there. You may have 20,000 steps in life, but it's the one you're taking now that is most important to where you're going.
 
kev said:
As others have mentioned, this is perhaps all too philosophical for a science forum.

yeah, but what's the point in science if you're not applying it to anything meaningful? I really wanted ideas from scientists on this though I'm not opposed to this changing areas in the forum, might not be the most relevant to Special & General relativity discussion
 
Red Leader said:
yeah, but what's the point in science if you're not applying it to anything meaningful? I really wanted ideas from scientists on this though I'm not opposed to this changing areas in the forum, might not be the most relevant to Special & General relativity discussion

If its any help, most of the essays I linked to have a scientific basis and it might help to pick some of the scientific issues brought up in those essays and bring them back here or to the quantum physics forum.
 
  • #10
cheers, will do. thanks again.
 
  • #11
Now you can say, events and experiences have HAPPENED, however, they don't exist NOW. They DID exist, but right now? no. Nothing of the past exists - every micro-mili-billi-nano second we are a new.

Atoms are what about 13 billion years old? Atoms have been relative in the present now for a long time and look to be in our future also, which contradicts your statement "Nothing of the past exists - every micro-mili-billi-nano second we are a new." Every signal emitted is from the present, while every signal I receive in the present is from the past. Everywhere I look in my present I see different parts of the past in the form of photons. The future looks like the possible paths in front of me no matter the direction I look in space, with only the possibility of moving through space/time and matching my present with anothers present, this I see as my future. Time is a area, and time as counted by a clock is the boundary of a dilating area. All motion is outward, with the present nothing more than when all this outward motion interacts with an emitter. The arrow of time points outward from every point source of energy and as long as we look outward in this direction we look at the future via photons emitted in the past from within atoms.
 
  • #12
not all atoms are 13 billion years old
 
  • #13
rewebster said:
not all atoms are 13 billion years old

No, but the majority (>90%) are, as most of the atoms in the Universe are hydrogen atoms. The only major atom changing force is nuclear fusion inside of stars, which doesn't produce hydrogen; in fact, it decreases the number of hydrogen atoms in the Universe.
 
  • #14
so what's your theory on where hydrogen atoms are produced?



I have my own ideas, which could be out there already--I haven't really checked yet
 
  • #15
I don't think time is subjective or a choice, I think time is a mechanism for change.
Just because the universe itself has no recollection of the past, doesn't mean it didn't exist.
A lot of things happen in the universe regardless of if it's ever perceived or noticed, including change.
Just as I've sit in this chair everyday for the past week, the rocks on some desolate lonely planet have all moved deterministically from A to B to C.
We are just lucky we can observe change, only consciousness can so far.
 
  • #16
rewebster said:
so what's your theory on where hydrogen atoms are produced?



I have my own ideas, which could be out there already--I haven't really checked yet

About 379000 years after the Big Bang, hydrogen nuclei gained electrons, forming hydrogen atoms.
 
  • #17
octelcogopod said:
I don't think time is subjective or a choice, I think time is a mechanism for change.
Just because the universe itself has no recollection of the past, doesn't mean it didn't exist.
A lot of things happen in the universe regardless of if it's ever perceived or noticed, including change.
Just as I've sit in this chair everyday for the past week, the rocks on some desolate lonely planet have all moved deterministically from A to B to C.
We are just lucky we can observe change, only consciousness can so far.

I'm not saying the past didn't exist, I'm saying it doesn't exist. Slight but important difference.

We can appreciate it happened, but it's not happening. - only 'now' is happening.

Also, I don't think you can ever 'see' the past as it's past, you are only seeing what is happening now. - sure there is evidence of what HAS happened, but now, is the only thing there is and ever is from what I've come to.

"Nothing of the past exists - every micro-mili-billi-nano second we are a new." I still think this statement rings true as well - because there is no past, when I say 'nothing of the past', I mean that as in, there is only now that exists - which again, shows that we have experienced certain events, but right now is the only thing that exists.
 
  • #18
What you perceive as "now", is really only the very recent past. It takes a little bit of time for sensory data to reach, and be processed by, your brain. The present is always a little bit ahead of your sensory systems.
 
  • #19
"Nothing of the past exists - every micro-mili-billi-nano second we are a new."

Sorry I'm not new, I am a part of my own past, and I am still here. Where is this new me? I may leave this computer and as I walk away it will go farther into my past, but when I return it will still be there waiting in my past until we can be in the present together again. I may process the signals sent to me in my present, but I do not make them up. These changing signals that I process as my present are always new but I am rooted in the past by my mass and that is old.
 
  • #20
Fortifiv2 said:
Time does not exist in the physical realm but it does in the mental realm. If you can think of something, it exists. That's why Descartes said, "I think, therefore I am." Numbers exist not because we can see them but because we can think of them. Really math is just a mental way of thinking, but people regard it as real.

Actually, Descartes dictum, "I think, therefore I am" is already proven to be an old method of thinking. It is a famous error.

Who we are, in definition, are not our thoughts. We're more than just our minds.

Infact our presence rises with stillness of the mind, just by doing a few tests. Ask yourself, "Am I breathing?" The answer is both without thought and without words, to ask does not require words or thought, but pure presence and stillness of the mind.

Thinking without awareness isn't going to get you anywhere. The mind is but a tool. The more you realize this, the more you can enhance and sharpen such a thing.

Essentially Descartes equated thinking with being, thinking being the root of the ego. Jean-Paul Satre saw the error in this statement first and basically said that when you are AWARE that you are thinking, that awareness is not part of thinking. It is a different dimension of consciousness.
 
  • #21
But the only reason we are aware is because we have something to be aware of.
Namely the world around us, and even our internal world.
And the only reason we are aware is because we can think about them, and experience them.
So is there really a difference between thinking and being aware?

If you took away all thought and all external world, would there be any awareness left? I doubt it..
 
  • #22
I think the major flaw in your thinking is that you claim that everything is 'in the present' the 'now' what does that even mean? It surely took time for the light from my laptop to emit and get received by my eyes and register in my brain. It would take even longer if I was standing 1000m away. When we look up at the stars we certainly are not looking at them as they are 'in the present'.

We are viewing them how they are 'in the present' to our individual selves but how does that prove that there is 'no past'.
 
  • #23
Even if you picture your conscious as the "processor of your present", it does not make matter disappear, matter is in both the past and the future, it is always there. It is only the observers who move about under their own power that see time as motion.
 
  • #24
petm1 said:
Even if you picture your conscious as the "processor of your present", it does not make matter disappear, matter is in both the past and the future, it is always there. It is only the observers who move about under their own power that see time as motion.

Prove this entire statement please. :smile:
 
  • #25
Red Leader said:
So time really doesn't exist?

Is it not an illusion of continuity?
What experiment could be performed to determine if the apparent continuity of time were an illusion or not?
 
  • #26
Prove this entire statement please.

I left this computer for an hour, my wife stayed in the room using it, when I got back it was still there. if you won't take my word about ask my wife. :wink: It is the continuity of matter that we count as time, and the motion of matter me measure as time.
 
  • #27
petm1 said:
I left this computer for an hour, my wife stayed in the room using it, when I got back it was still there. if you won't take my word about ask my wife. :wink: It is the continuity of matter that we count as time, and the motion of matter me measure as time.

Yes this is what WE perceive time as but this is by no means something 'concrete'. You have no way of proving to me or to yourself, if you really think about it without making assumptions, when you are no longer observing matter it is continuing to exist. So your 'continuation' argument then falls apart.
 
  • #28
Sorry! said:
Yes this is what WE perceive time as but this is by no means something 'concrete'. You have no way of proving to me or to yourself, if you really think about it without making assumptions, when you are no longer observing matter it is continuing to exist. So your 'continuation' argument then falls apart.

How about an egg? No observer sees the chick until it hatches does that mean there was nothing inside until the chick is seen? As for "Concrete" my patio with no one watching is still right out side my window, I assume, would it help if you came over to see it yourself? As an observer I may process the signals I receive in my present but I am not making them up, my eyes do not sent out the signals for me to process they receive the signals. I may be a mobile observer in space/time but I am not needed for time nor space to continue.
 
  • #29
You speak very similarly to the philosophy of SOLIPSISM... the idea that nothing can be proven to exist outside of the mind... not even other minds. You should read up on that, it's a very popular idea. Also, feel free to check out my thread that has a similar idea, though goes about it in a different way:

https://www.physicsforums.com/showthread.php?t=368284
 
  • #30
Evolver said:
You speak very similarly to the philosophy of SOLIPSISM... the idea that nothing can be proven to exist outside of the mind... not even other minds. You should read up on that, it's a very popular idea. Also, feel free to check out my thread that has a similar idea, though goes about it in a different way:

https://www.physicsforums.com/showthread.php?t=368284

cheers. yes, it comes off a little solipsistic, but I don't totally agree with solipsism.


Time exists only within the present. The present doesn't exist within time.

The first sentence has proof 100% of the time, the second has no proof.

Everything exists as one within now.

Dalespam - there is no geiger counter we can make to prove this, it simply is now at all times, there is no test other than asking, is this now? If the answer is yes, then you are in the present and you are not in the past or the future.

Thing is, the mind can SIMULATE the past and present, it can conjure up random scenarios and memories of the past, like you're reliving them, but you're just revisiting the experiences you had, meaning that you CAN experience the past or the future using the mind, but only within the present moment being right now.

Right now you are in the present. There is no proof ever that you are in the past or the future right now. Realise what the mind is telling you and what is actual reality. You are in the moment at all times. Even if the mind isn't...
 
  • #31
petm1 said:
How about an egg? No observer sees the chick until it hatches does that mean there was nothing inside until the chick is seen? As for "Concrete" my patio with no one watching is still right out side my window, I assume, would it help if you came over to see it yourself? As an observer I may process the signals I receive in my present but I am not making them up, my eyes do not sent out the signals for me to process they receive the signals. I may be a mobile observer in space/time but I am not needed for time nor space to continue.

You're not proving anything. Just dragging it on.
 
  • #32
Time is merely a man-made device used to record certain actions that happen throughout the universe.

Deception of time, or in the term you awarded it as "Right now" is a state of consciousness.
 
  • #33
Red Leader said:
Dalespam - there is no geiger counter we can make to prove this
If there can be no experimental evidence as to whether or not the continuity of time is an illusion then there is no scientific reason to prefer your position over the opposite.
 
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  • #34
Sorry, how does momentum work, it seems to be a property of the past in my minds eye?
 
  • #35
I think the problem with understanding time centers around the fact that we have no real idea as to how fast time moves or if it moves in steps or not. The reason we don't have a way to know these things is because you can't messure time with anything but time so what we really need is an impossible thing but would be really handy in understanding time. Its so impossible it can't be thought of so I have no idea what it even is. Mby we do have it in some form within our awareness but who knows.
 
  • #36
Hello all,

Imo Time does not move but is the source of all motion, motion being a resultant of change, change being a resultant of interactions.

Here’s my take on it…

Time is an infinite energy that fuels and has fuelled all interactions in which change happens. It is available in any and all amounts needed for a given change to happen.

This would be my absolute definition of Time, however, throughout Earth’s history, some of our greatest human minds, conjointly with Nature and mathematics, came to realize and grasp something about cycles and duration as a useful physical quantity, intelligently refining this quantization up to our current most accurately defined standards. At some point, that something was named Time.

Change is always happening as everything in our Universe is continually in interaction, which brings me to the ‘now’ aspect. It is also my opinion that everything is happening in the same moment, the only moment, namely the present.

Of course you can argue till exhaustion that things cannot happen simultaneously at any given moment, but all I’ll respond to that is that in fact they do… but we cannot measure that simultaneity because all our measurements are based on acquisition of some EM signal that travels at the same speed from all sources. Never mind any correction factors.

However, that in no way washes off the fact that everything happens ‘at the same time’. A simple example would be a common time related measurement question that states that “at time t=0 a light signal is emitted from source A, if it takes 54 hours and 22 minutes to reach detector D, how far was the source ?”, I mean, we can read this sort of stuff all over…

In fact what that says is for the answer to be marked ‘correct’, both the emitted signal and the counter start sequence MUST HAPPEN SIMULTANEOUSLY. This is valid for any and all source / detector distance.

On another note, I’ve had this idea about memory of past events which also has an interesting twist to it as it deals with getting FTL information. I’ll wait some more before posting it.

Regards,

VE
 
  • #37
Time is the whole. Space was created "when" energy twisted time into quarters. Three of the parts move in the positive direction outward and one negative or inward, or is it three in the negative and one positive I guess both out looks are describing the same interaction point. In my mind the four dimensions that we think of as separate are but one of time.
 
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