Time Travel... is it possible? This man thinks so.

[gunslingingbird]

Maybe, but these events are only observed by human perception. The whole of time could all be happening at once, but our brains can only experience it in a beginning, middle, end way. This would explain ghosts, little glimpses of the entirety of time seeping into our perception from the 'past' likewise UFO's, which may be craft from our 'future'. & also deja vu, blips in our perception of time?
Of course this could mean that there is no such thing as cause & effect or freewill. Which is slightly mindboggling! :eek:

I'd be more inclined to think that it has something to do with the theory of the universe collapsing after it expands. As for deja vu, D) I'd be more inclined to think that it is due to a fold in the fabric of time-space than to think it's because there is no past-present-future.

 

[Riffy]

I'm already "time travelling" anyways... forwards at the rate of 1 second per second... I'll get my coat.

 

[ChefChiTown]

Yes and no. The concept of keeping track of time, designating names and numbers to determine what time it is or when something happened is man-made, but time itself is a naturally occurring phenomenon. It's time that sets the aging process in living things, time determines the seasons, and the distance between celestial bodies. Casio may be a human invention, but the thing that it measures is not.

Ok, I'll ask you to do the same exact thing that I ask everyone else that makes that argument...

Prove it. Prove that time exists.

Age is age because we, as human beings, created it. Is a 5 year old boy really 5 years older than when he was born? No. That's just what we decided he was. Mankind created seconds, minutes, hours, days, weeks, months, years, centuries, eons, etc. The entire concept of time is just that...a concept.

 

[Friday on my mind]

Ok, I'll ask you to do the same exact thing that I ask everyone else that makes that argument...

Prove it. Prove that time exists.

Age is age because we, as human beings, created it. Is a 5 year old boy really 5 years older than when he was born? No. That's just what we decided he was. Mankind created seconds, minutes, hours, days, weeks, months, years, centuries, eons, etc. The entire concept of time is just that...a concept.

Chef I think if you read this with an open mind from Wikepedia you will see that time is more than just a concept or human creation.

http://en.wikipedia.org/wiki/Time

 

[D-rock]

Ok, I'll ask you to do the same exact thing that I ask everyone else that makes that argument...

Prove it. Prove that time exists.

Age is age because we, as human beings, created it. Is a 5 year old boy really 5 years older than when he was born? No. That's just what we decided he was. Mankind created seconds, minutes, hours, days, weeks, months, years, centuries, eons, etc. The entire concept of time is just that...a concept.

Isn't that like saying people created distance because we have things like meters and kilometers. It's more that we just came up with those things to more conveniently measure and standardize the concepts of reality like distance and time. That doesn't mean they don't exist.

 

[Skyraider22]

They always talk about going back 70 or 80 years... lets just say you only went back 10 couldn't it be possible to run into yourself. Think how weird that would be. It's one thing to look in the mirror and see a reflection of yourself but to actually see yourself standing in front of you would be some crazy shit.

If it did become possible do you know how much shit people would want to go back and try to change....everything.


Some things are best left alone and i think Time Travel is one of them.


http://www.youtube.com/v/cjxo-pvSmdA&hl=en

http://www.youtube.com/v/V7vpw4AH8QQ&hl=en

http://www.youtube.com/v/V7AupwRJrgM&hl=en

http://www.youtube.com/v/NS1-SZ2L81k&hl=en

Wow more funny that anything good stuff never happen but good stuff.:1orglaugh

 

[koolj]

 

[Bone]

The entire concept of time is just that...a concept.

just like God :hatsoff:

time travel to the past is impossible. if it was, then a person could go back in time and kill his mother before he was born which is impossible.

 

[ChefChiTown]

Isn't that like saying people created distance because we have things like meters and kilometers. It's more that we just came up with those things to more conveniently measure and standardize the concepts of reality like distance and time. That doesn't mean they don't exist.

Think of it this way...

According to religious people, God created time (IE - The 7 days in a week). If one can argue that there is no proof that God exists (which there isn't), why can't one argue that there is no proof that time exists?

I mean, if something that can't be proven to exist has supposedly created something else (time), wouldn't that creation also not exist?

Chef I think if you read this with an open mind from Wikepedia you will see that time is more than just a concept or human creation.

http://en.wikipedia.org/wiki/Time

Time is a component of the measuring system used to sequence events, to compare the durations of events and the intervals between them, and to quantify the motions of objects. Time has been a major subject of religion, philosophy, and science, but defining it in a non-controversial manner applicable to all fields of study has consistently eluded the greatest scholars.[1]

All that is saying is that time is a unit of measurement, which it is. What we, as human beings, consider to be the "durations of events and the intervals between them" is what we know as "time".

What I am trying to say when I say that time is a man-made concept, is that nobody knows if time is a real thing or not. We use it as a unit of measurement, but the concept of time can't be proven. For instance, without using our units of measurement (minutes, hours, days, weeks, months, years, centuries, etc), nobody can prove that any time has passed between now and, for example, Ancient Roman civilization. The only reason that people can say that time has passed is due to our units of measurement. But, nobody can prove that time has actually gone by since then and nobody can prove that time exists.

Also, I will offer this little nugget of thought...

If time travel is possible, then we would be able to travel into the future, just as well as the past. It's not like time would have any rules, especially if we, as human beings, became smart enough to figure out how to travel upon it. But, how can we travel into the future when the future hasn't even happened yet? Where would we go? What and where would we be sent to?

This is why I say that time doesn't exist.

 

[Torre82]

While I believe that time travel to the past means an instant paradox that erases you, I believe travel to the future impossible because it hasnt happened, yet.

In the likely case that this is actually not true.. then the timeline is set and we're simply the 'music wheel' for the piano or music box. Playing our parts and moving thru it all.

So that begs the question.. does the timeline auto-correct? If you travel backwards and spare JFK from a bullet, does the universe make him die in a car crash the next minute? Maybe another bullet next week.

Another possibility exists that we're more powerful than we think we are and memories are a form of time travel. We remember the past because we can travel there in one form or another. Every time we remember an event we remember less because we've exhausted our *secret power* going back to it... or the event didnt make enough of a ripple in our lifeline to be properly located and traveled to. First time we got laid? Sure. First time we farted? Not so much a ripple.

 

[D-rock]

Think of it this way...

According to religious people, God created time (IE - The 7 days in a week). If one can argue that there is no proof that God exists (which there isn't), why can't one argue that there is no proof that time exists?

I mean, if something that can't be proven to exist has supposedly created something else (time), wouldn't that creation also not exist?

Unless your going on the assumption that absolutely nothing in reality can be proven, I don't see it. The number of days in a week is just a number, no matter how it came about. If we have measurements of time some number has to be attributed to things that quantify it, even if people picked a measurement based on what was convenient for them.

 

[STDiva]

best thread ever.

 

[Wainkerr99]

If you travel far enough at a certain speed from Earth, then return, you will see the future in a more practical sense, without aging much.

If one can do this without embarking in a spaceship, but remaining in a lab then, again, one would have traveled through time.

So, if you wanted to visit the Earth in the year 3000, travel at 99.995% of the speed of light, go to a star 500 light years away, turn around and come back at that speed, in a ship.

Earth will be 1000 years older, but you would have aged only 10 years.

Time travel to the past is more difficult but it is a theoretical possibility that seems to be allowed by Einstein's theory of general relativity. There, space and time are curved, and you can have solutions to those equations that are sufficiently twisted that allow you to circle back and visit an event in your own past. This is in the same way that Magellan's crew left from Europe, went steadily west, and circled the globe.
There are solutions like this to Einstein's equations of general relativity: wormhole solutions, some that involve cosmic strings, and so forth.
However, the question is whether these possibilities can be realized in our Universe or not. To understand that, one needs to understand the laws of quantum gravity. Einstein's equations are taken quite seriously because they have been tested. For example, light bending around the Sun and so forth. Therefore, the time travel to the past is a topic under current investigation.

 

[Galactic]

They always talk about going back 70 or 80 years... lets just say you only went back 10 couldn't it be possible to run into yourself. Think how weird that would be. It's one thing to look in the mirror and see a reflection of yourself but to actually see yourself standing in front of you would be some crazy shit.

If it did become possible do you know how much shit people would want to go back and try to change....everything.


Some things are best left alone and i think Time Travel is one of them.


http://www.youtube.com/v/cjxo-pvSmdA&hl=en

http://www.youtube.com/v/V7vpw4AH8QQ&hl=en

http://www.youtube.com/v/V7AupwRJrgM&hl=en

http://www.youtube.com/v/NS1-SZ2L81k&hl=en

Great links! :thumbsup: REALLY interesting stuff.

 

[bustybbwlover]

Since time is a man-made concept, travelling through it would be impossible.

wouldn't that make it easier to get around ?

 

[ChefChiTown]

Unless your going on the assumption that absolutely nothing in reality can be proven, I don't see it. The number of days in a week is just a number, no matter how it came about. If we have measurements of time some number has to be attributed to things that quantify it, even if people picked a measurement based on what was convenient for them.

Ok, let's assume that time is real and not just a concept...

Imagine, it's the year 2050 and scientists have developed a technology that allows human beings to travel back in time. To test and confirm the technology, one of the scientists agrees to have himself sent back in time. He hops into the time machine, sets the date for 800 B.C. and flips the switch. In a matter of a few moments, that scientist is gone. Where is he? Well, he's back in the past, in the year 800 B.C.

Now, how does he get back? Where does he travel to? Does he get sent to the same exact spot in the universe, only 2,850 years in the past?

Since certain things that exist in 2050 AD didn't exist back in 800 B.C., will those things be able to go back in time, even though they haven't been created yet? His clothes? His shoes? His watch? Himself?

Since the time machine itself didn't exist back in 800 B.C., would that be able to travel back in time as well, even though it wouldn't have been created yet?

Can he go back in time as far as he wants? Can he go to the moment when time began? Actually, when did time begin? If time exists, wouldn't there be a beginning to it? Ironically, what happened during the time period before time began? Could the scientist time travel to a point before time even began?

Since time is just a concept, none of this can happen. Like I said before, without using our units of measurement, prove that time is real and not just a concept. Not even the most brilliant minds in the world can do that, which is why I believe time to be nothing more than a concept. We, as human beings, just accept time as being part of our life because that's how we were raised. We were raised to believe that when the sun rises, it's morning, and when the sun sets, it's night. We were raised to believe that there are 365 days in a year and each time our birth date passes during each year, we are now a year older, which is what we call "aging". But, what nobody can do is prove that time has actually passed when we "age". We only believe that it has because we have labeled what we call "time" with certain terms, such as seconds, minutes, hours, days, etc.

Just like the existence of a god, time can't be proven. It can only be followed, as it is how we were raised to live.

 

[Hot Mega]

Theoretically if there were ever a man-made apparatus for time travel, you could only travel back anytime after it's creation only to the time of it's creation (if that makes sense).

In other words, if some "machine" were create in year 2200 (for example), you would not be able to travel back farther than the exact year, month, day, hour and second the machine was made.

 

[marquis2]

According to Stephen Hawkings, time began with the start of the Big Bang.It's meaningless to ask what was there before the big bang as time didn't exist so there was no "before".

 

[Friday on my mind]

According to Stephen Hawkings, time began with the start of the Big Bang.It's meaningless to ask what was there before the big bang as time didn't exist so there was no "before".

Yes that was in the Wik link I put up for the chef.Hawkings is brilliant physicist and is someone who should know about such things.Also in that wik link was statement that time is a fundamental element of physics.

"In physics and other sciences, time is considered one of the few fundamental quantities.[2] Time is used to define other quantities – such as velocity – and defining time in terms of such quantities would result in circularity of definition.[3] "

And then there was this at the wik link.

"Physical definition
Main article: Time in physics
From the age of Newton up until Einstein's profound reinterpretation of the physical concepts associated with time and space, time was considered to be "absolute" and to flow "equably" (to use the words of Newton) for all observers.[30] The science of classical mechanics is based on this Newtonian idea of time.

Einstein, in his special theory of relativity,[31] postulated the constancy and finiteness of the speed of light for all observers. He showed that this postulate, together with a reasonable definition for what it means for two events to be simultaneous, requires that distances appear compressed and time intervals appear lengthened for events associated with objects in motion relative to an inertial observer.

Einstein showed that if time and space is measured using electromagnetic phenomena (like light bouncing between mirrors) then due to the constancy of the speed of light, time and space become mathematically entangled together in a certain way (called Minkowski space) which in turn results in Lorentz transformation and in entanglement of all other important derivative physical quantities (like energy, momentum, mass, force, etc) in a certain 4-vectorial way (see special relativity for more details).

Classical mechanics
In classical mechanics Newton's concept of "relative, apparent, and common time" can be used in the formulation of a prescription for the synchronization of clocks. Events seen by two different observers in motion relative to each other produce a mathematical concept of time that works pretty well for describing the everyday phenomena of most people's experience.


Modern physics
In the late nineteenth century, physicists encountered problems with the classical understanding of time, in connection with the behavior of electricity and magnetism. Einstein resolved these problems by invoking a method of synchronizing clocks using the constant, finite speed of light as the maximum signal velocity. This led directly to the result that time appears to elapse at different rates relative to different observers in motion relative to one another."



While time is obviously a DEEP subject it is undeniably a fundamental aspect of physics and science.

 

[Hot Mega]

Ok, let's assume that time is real and not just a concept...

Since certain things that exist in 2050 AD didn't exist back in 800 B.C., will those things be able to go back in time, even though they haven't been created yet? His clothes? His shoes? His watch? Himself?


Since time is just a concept, none of this can happen.

Just like the existence of a god, time can't be proven. It can only be followed, as it is how we were raised to live.

With respect to what we call time...we know time as an intrinsic notion exists because in our dimension there are events that occur (i.e. motion). We know that as these so called events occur, change occurs. Time is the measurement we use to sequence events that occur in our dimension.

You are 100 pct. correct IMO when you say for example, "his shoes..his watch" and even "himself" haven't been created.

The person who made his particular watch for example wouldn't exist yet.

The best you could get to is the beliefs of some metaphysicists who theorize everything exists in the universe all the time but just in unconstituted elements which eventually constitute into things we recognize at some point in time.