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The thread was started by "Billy T"
saltydog said:I think time travel is impossible on dynamic grounds: The universe, as I see it, is a big non-linear dynamo in its chaotic regime. Think of the Lorenz Attractor: Trajectories NEVER cross. Same for the Universe in my opinion: to travel back in time would require crossing trajectories and to do so would entail "jumping" to another attractor (a different universe). Anyway, looking at it that way works for me.
Salty
RoboSapien said:Billy T
I completely agree with this concept.
"Time is just the change of state of information about universe registered in human brain compared to the innitially stored states relative to each other."
The above statement is my own, please don't delete it even though its not yet proved.
RoboSapien said:Why did at the time of big bang matter was thrown only in three dimensions ?
The best evidence of time will come only when at least information travels from future to past.
Billy T said:Your (2) postulates that time does not exist, then you go on to speak of T1 and T1. Frankly, I can not follow your thinking here. It seems to be self conflicting to speak of two different times under the assumption that time does not exist. (I am not trying to be difficult. I admit we are so use to speaking of time T1 and T2 etc that it is hard to communicate without doing so.)
Let me again explain why you can observe clock showing 12 o'clock and also showing 1 o'clock even though time does not exist and consequently can do nothing. The clock hands advanced, not because of the passage of time, but because the spring or battery is changing to a lower energy state.
I never have said that sequences (changes) do not occur, only that time passing has no causal effect on anything. Unfortunately, I am growing older, but not because time is passing. As explainded earlier: Events cause events. With each cell division, my telemars are getting shorter, small crystal are accumulationg in my joints, the sun is drying my skin, etc. Time has nothing to do with my aging. (or anythng else - it does not exist.)
My math proof in initialpost shows that although it is very convenient to describ the universe'schanges as if the were functions of time, it isnot necessary to do so. In truth every change has a non temporal cause. (Some other thing changing, like the spring running down in above text about the moving of the clock's hands.)
Billy T said:Thanks for the ref. Hav not read it all as must leave now, but on second page, I find:
"BARBOUR: My basic idea is that time as such does not exist. There is no invisible river of time. But there are things that you could call instants of time, or 'Nows'."
This is exactly what I have been saying based on my math proof.
Thanks again.
Billy T said:I am not making any comments about the reality of space. I can not prove it non existent with mathematics as I did for time, which is a unique parameter. You should not draw any conclusion, certainly not that I am contradicting myself because of my silence on the issue of the reality of space. As I observed before, I have enough to do just defending the idea that time is not real without getting into discussions about space also.
Billy T said:No, as I haave often stated, Events cause events, not time passing. Certainly there are sequences of events, like a chain, one leading to the next.
It is a big leap to go from this observation to postualte the real existence of something that has no affect on anything. "CLOCK READINGS" ARE NOT TIME. Sunrises are not time. The only difference between "clock readings" and "sun rises", is that one sequence of events (hands pointing at 12x60 different positions on the clock dial) is a more finely marked sequence of events than the daily sun rise, but this is not any different in principle. Is "sun rise" time also? How about an even less frequent sequence of events: Neptune / Pluto conjunctions? Is that time? Point is: that any sequecnce of events, even the oscillation of the atoms in an "atomic clock" is just that, a sequence of events, not time. My basic claim is that I have eliminated time. You claim I have only relplaced it. Now at least you conceed that I have done so formally via my math, but not "metaphysically." I.e. time is still hidden in the various variables, such as clock hand positions, that correlate well with the "time I eliminated."
I find metaphysical proofs much less persuavive than math. In fact, I don't know of anything proven so firmly by metaphysics that other philosophers can not argue just the contray! Consequently, I will stick with mathematical proofs.
I have already granted that when I eliminate time from all desctriptions of the universe, including sequences of events, that some of the remaining varriables do correlated well with clock hand positions, but I continue, as I just did above, to believe that clock hand positions are not time any more than Neptune/Pluto conjunctions are time.
You believe in the reality of time so firmly that I do not think I will ever convence you that something which can not be observed (don't tell me again that by looking at clock hand positions, your are observing time), and has no affect on anything, is not real. No more real than unicorns, which also have no affect on anything and can not be observed. Thus perhaps we should just "agree to disagree". You stick to your metaphysics, and I will stick to my math. OK?
sneez said:I think there is something to the argument that time might be just a perception. There is this illness which causes brain not to record "frames" of events into memory which causes a person perceive things not continually. Example: That person would see a car 100 feet away and the next time he/she would see the car would be 10 feet away without seeing how the car got there. Just like very slow frame rate in while watching movie.
Billy T said:Who is suggesting this straw horse: "on top of each other"? Only someone who is only able to conceive of a chain of events, one causing another, as something that requires time be real would suggest such a thing. Certainly not Billy T.
One thought can lead to another, one event can lead to another, Time has nothing to do with this. Part of the purpose of my prior post was, as you correctly guessed, to show that even "the arrow of time" (entropy increasing points to the future) is just statistically likely, not necesarily true. If you can not even be sure which way is future and which was past, how can you think time real?) Calling demonstrations such as my marble box demo a "ton of scepticism" is not much a reasoned argument. It is border line name calling, and not your first either (see below.)
Time is not required for complete discription of the universe, thoughts included if you are a physicalist, not an idealist, or one of their ilk who assumes thoughts are given to you by some "spirit."
That is, I have demonstrated mathematically that every equation describing physical events, including their changing characteristics, can be written without any reference to time. I.e. the conection from event to event is direct, without using time as an intermediary. This is possible and demonstrated. QED in post 1.
Only a person firmly holding a limited view ("time must exist") and incapable of understanding other alternatives would persist in thinking "events must be on top of each other" if not "displaced in time" (Ergo time is real.), rather than understanding the obvious: "Events cause events" (not time) - The mantra I have been chanting in more than a dozen posts.
This counter proof: "time must be real because if it were not, then events would be on top of each other and since they are not, time must be real." Is circular reasoning, question begging or whatever you want to call it, and not the first time you have so violated the only really universally accepted rule of your beloved metaphysics.
I challenge you to show time is real, without first assuming it is as part of your "proof." That is give me a proof, even a metaphysical one, but a math proof would be much stronger, that time does exist, which does not effectively begin by the assumption that it does. Your above counter proof: "Since events are not on top of each other (but distributed in time - only alternative you recognize as possible) then yes they are distributed in time and consequently time must exits" is more clearly seen as circular if expanded to fully expose your "logic" as I have just done.
You concluded an earlier post by stating that I do bad metaphysics (and or Math - I forget which, but will dig it out if you like and cite other examples of your circular reasoning also if requested.) Although I don't put much weight in metaphysical arguments, I would at least avoid circular ones.
if time does not exist then how would anything ever happen? you seem to be missing the fundimental flaw in your idea, if time doesn't exist, then either nothing would happen at all, or all things would happen in less than an instant. we observe the passage of time as things around us move. your little math solution only works if you don't need to know how fast your marble is moving. you're confusing the issue I am afraid. saying that things happen as a series of events in itself implies that time exists. if there is no time there can be no movement.