Albert Einstein said "Time Travel is possible"

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silky_smooth8

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#51 silky_smooth8
Member since 2003 • 3659 Posts
The only person who could get away with time travelling is Lebron James. AMIRITE!?Bruin4ev3r1520
lol. crabwalk through time
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Solid_Link22

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#52 Solid_Link22
Member since 2006 • 5698 Posts

The only person who could get away with time travelling is Lebron James. AMIRITE!?Bruin4ev3r1520

This pretty much sums it up. How I hate LeBronze

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_IronManDude_

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#53 _IronManDude_
Member since 2008 • 1595 Posts

[QUOTE="_IronManDude_"][QUOTE="howlrunner13"]

You are not going the speed of light. You are going close to the speed of light. This is of course if we have the technology. But physical time travel into the future is possible. Your idea for the future is not time travel, it's foresight.

howlrunner13

But going even close to that speed would still kill you. And my idea is foresight, that's true. But it would be the same as a "flash-forward". If you know what will happen in the future, it's pretty damn sure to happen. "By the very act of watching, the observer changes reality."

Again this is assuming the technology exists to sustain that speed. And it doesn't have to be 99.999% of the speed of light. It could be 80% or something. As for your linking idea it is still not time travel.

Sure, but even with the technology, it would still kill you, even at 80%. Hell, probably even at 50%. And I know that the linking idea isn't technically time travel, but if it walks like a duck and talks like a duck, it's probably a duck. Of course, that's only metaphorical. There was no talking duck.
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howlrunner13

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#54 howlrunner13
Member since 2005 • 4408 Posts

[QUOTE="howlrunner13"]

[QUOTE="_IronManDude_"] But going even close to that speed would still kill you. And my idea is foresight, that's true. But it would be the same as a "flash-forward". If you know what will happen in the future, it's pretty damn sure to happen. "By the very act of watching, the observer changes reality."_IronManDude_

Again this is assuming the technology exists to sustain that speed. And it doesn't have to be 99.999% of the speed of light. It could be 80% or something. As for your linking idea it is still not time travel.

Sure, but even with the technology, it would still kill you, even at 80%. Hell, probably even at 50%. And I know that the linking idea isn't technically time travel, but if it walks like a duck and talks like a duck, it's probably a duck. Of course, that's only metaphorical. There was no talking duck.

Why would it kill you if you have the technology?

And you comparing your linking idea to time travel is more like a dog that's trying to quack and act like a duck, when in reality it is a completely different animal. ;)

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MrGeezer

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#55 MrGeezer
Member since 2002 • 59765 Posts

Is Albert Einstein right? Citrus25

Time travel to the future most is certainly possible, and has already been done. It's a very real consequence of relativity. Time passes more slowly for objects in motion, which means that objects in motion travel into the future. This has been 100% proven to be true, and people have literally time travelled into the future in order to demonstrate this. All you have to do is move really really fast.

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Gaming-Planet

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#56 Gaming-Planet
Member since 2008 • 21107 Posts

It's true!

All you gotta do is look at the wall for about 5 minutes and you're 5 minutes into the future!

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Killfox

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#57 Killfox
Member since 2004 • 6666 Posts
yes it's theoretically possible Brainkiller05
Agreed. I have watched many shows on time travel. The thing is though that you cant travel in time until after is built. As in you cant go back in to the future(at first). So say a time machine is built and you wait 20 years to use it. You can only go back as far as when the machine was built. Though if you believe in aliens or other life forms in the universe. Then scientist have said if other life forms have created a time machine then you could technically go back even further if the time machine was made previously to the other time machine. Theres other scientific aspects I could get into but i dont want to blow your mind to much. So far though a time machine is very unlikely. They know what it takes to travel in time. The hard part is just getting it to work.
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MrGeezer

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#58 MrGeezer
Member since 2002 • 59765 Posts

If you believe E=mc^2 is true, then anything at speeds greater than the speed of light is considered time travel.

NYiVtec

Which is irrelevant, since it is absolutely 100% impossible for ANYTHING to travel faster than the speed of light.

The speed at which light travels through a vaccuum is the absolute maximum speed at which ANYTHING can travel. NOTHING can move through space faster, and nothing with any mass can ever reach the speed of light.

Saying that "something might happen if you go faster than the speed of light" is a meaningless statement, since it's a physically impossible scenario. You'd might as well say "I might get rich if I could poop out diamonds".

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howlrunner13

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#59 howlrunner13
Member since 2005 • 4408 Posts

[QUOTE="Brainkiller05"]yes it's theoretically possible Killfox
Agreed. I have watched many shows on time travel. The thing is though that you cant travel in time until after is built. As in you cant go back in to the future(at first). So say a time machine is built and you wait 20 years to use it. You can only go back as far as when the machine was built. Though if you believe in aliens or other life forms in the universe. Then scientist have said if other life forms have created a time machine then you could technically go back even further if the time machine was made previously to the other time machine. Theres other scientific aspects I could get into but i dont want to blow your mind to much. So far though a time machine is very unlikely. They know what it takes to travel in time. The hard part is just getting it to work.

That makes no sense. What does when the machine is built have to do with traveling through time?

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MgamerBD

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#60 MgamerBD
Member since 2006 • 17550 Posts
[QUOTE="MgamerBD"]You know Albert Einstein was brillant in math. But in everything else he was basically special ed right?Franklinstein
That's completely wrong actually, and it wasn't just math, it was mostly physics. Which is what time deals with.

same difference either way. He was special ed in everything else...so I wouldn't really believe him that much....
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Killfox

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#61 Killfox
Member since 2004 • 6666 Posts

[QUOTE="Killfox"][QUOTE="Brainkiller05"]yes it's theoretically possible howlrunner13

Agreed. I have watched many shows on time travel. The thing is though that you cant travel in time until after is built. As in you cant go back in to the future(at first). So say a time machine is built and you wait 20 years to use it. You can only go back as far as when the machine was built. Though if you believe in aliens or other life forms in the universe. Then scientist have said if other life forms have created a time machine then you could technically go back even further if the time machine was made previously to the other time machine. Theres other scientific aspects I could get into but i dont want to blow your mind to much. So far though a time machine is very unlikely. They know what it takes to travel in time. The hard part is just getting it to work.

That makes no sense. What does when the machine is built have to do with traveling through time?

I saw this hole show on the discovery channel about time travel. Time travel can only occur during the time the machine actually existed. The machine is a fixed object. If you tried to travel before it existed it wouldnt work because the machine does not exist before that. Because when you travel in time your still using that same machine. So say you do travel in the fixiated time that it was built then you would travel back to that same exact spot where the machine is. Thats why it wont work to travel before the existence of it. Where are you traveling back to if the machine isnt there to begin with. Hey this is they only way so far that they believe time travel could actually exist. SI tied to explain it as clear as possible.
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howlrunner13

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#62 howlrunner13
Member since 2005 • 4408 Posts
[QUOTE="howlrunner13"]

[QUOTE="Killfox"] Agreed. I have watched many shows on time travel. The thing is though that you cant travel in time until after is built. As in you cant go back in to the future(at first). So say a time machine is built and you wait 20 years to use it. You can only go back as far as when the machine was built. Though if you believe in aliens or other life forms in the universe. Then scientist have said if other life forms have created a time machine then you could technically go back even further if the time machine was made previously to the other time machine. Theres other scientific aspects I could get into but i dont want to blow your mind to much. So far though a time machine is very unlikely. They know what it takes to travel in time. The hard part is just getting it to work.Killfox

That makes no sense. What does when the machine is built have to do with traveling through time?

I saw this hole show on the discovery channel about time travel. Time travel can only occur during the time the machine actually existed. The machine is a fixed object. If you tried to travel before it existed it wouldnt work because the machine does not exist before that. Because when you travel in time your still using that same machine. So say you do travel in the fixiated time that it was built then you would travel back to that same exact spot where the machine is. Thats why it wont work to travel before the existence of it. Where are you traveling back to if the machine isnt there to begin with. Hey this is they only way so far that they believe time travel could actually exist. SI tied to explain it as clear as possible.

Ah, ok I understand. I still think that relativity is our best (maybe only) bet at future time travel, and I still believe going back in time is impossible. Pardoxes and such.
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Killfox

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#63 Killfox
Member since 2004 • 6666 Posts

[QUOTE="Killfox"][QUOTE="howlrunner13"] That makes no sense. What does when the machine is built have to do with traveling through time?

howlrunner13

I saw this hole show on the discovery channel about time travel. Time travel can only occur during the time the machine actually existed. The machine is a fixed object. If you tried to travel before it existed it wouldnt work because the machine does not exist before that. Because when you travel in time your still using that same machine. So say you do travel in the fixiated time that it was built then you would travel back to that same exact spot where the machine is. Thats why it wont work to travel before the existence of it. Where are you traveling back to if the machine isnt there to begin with. Hey this is they only way so far that they believe time travel could actually exist. SI tied to explain it as clear as possible.

Ah, ok I understand. I still think that relativity is our best (maybe only) bet at future time travel, and I still believe going back in time is impossible. Pardoxes and such.

See according them you can still go back in time just only back until the time machine was created. So anything that has happened now without a time machine present is unchangable. You are correct though. Thats why they believe this is the only way time travel can work.

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MrGeezer

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#64 MrGeezer
Member since 2002 • 59765 Posts

No i dont think so. Think about it this way...you're a 50 year old guy. You go back in time and see yourself when you're 13. You take a gun and kill your 13 year old self. How would you have been able to grow up to be 50 if you were dead at 13? It just doesn't make sense to me.

Darkmatter88

You're making an assumption which you really have no business making. Let's suppose that you can go back in time. Even if we accept this, what reason do we have to assume that you CAN kill your younger self, if your younger self already DID NOT DIE?

The "grandfather paradox" (which your question is sort of a form of) rests on the assumption that time is actually CHANGEABLE. In all likelihood, time is NOT changeable. It is not malleable. Time consists of a series of moments, and moments DO NOT CHANGE.

So even if we take it as a given that you can go back in time, there is absolutely no reason to believe that you can CHANGE anything. You may be able to have an effect, as in being able to INTERACT with the past. But any interactions you have will be INEVITABLE. From YOUR perspective, you're acting as if you were in the present. But you AREN'T in the present. You're in the past. Anything that you manage to do was ALREADY DONE.

As an example, we're talking Terminator rules. Kyle Reese goes back in time to keep The Terminator from killing Sarah Connor. Kyle Reese thinks that things can change. That he has a chance of failing in his mission, and that there is a chance that Sarah Connor actually can be killed by The Terminator. He still has the ILLUSION that his acts of free will can have a change on future events (from the perspective of that moment in time). And he's wrong. He ends up having sex with Sarah Connor, and becoming the father to the man whose future he was trying to preserve. It turns out that he was ALWAYS present at that point in spacetime, that he was ALWAYS the father of John Connor, and that Sarah Connor CANNOT be killed by The Terminator, because she WASN'T killed by the terminator.

To take a quote from the most recent season of Lost, "what happened, happened". If it DID happen, then it can't suddenly NOT happen. That is the single timeline answer. Moments don't change. If it didn't happen, then it CAN'T happen. If you weren't killed by yourself when you were five years old, then you CAN'T go back in time as a 25 year old man and kill the 5 year old version of yourself. If you actually do manage to make it to that point in time and space, then something will stop you from killing your younger self. Maybe a piano falls on your head. Maybe you get shanked by a hobo. Doesn't matter what stops you, you can't change anything.

But then there is also the many worlds conjecture. This notion imagines that there are an infinite number of parallel universes, and that anything that CAN happen has in fact ALREADY happened in some alternate universe. In this conceptual framework, when you go back in time and kill your father before he met your mother, you're NOT IN THE SAME UNIVERSE. You've travelled to a DIFFERENT universe, one in which your father dies before meeting your mother. This is akin to the "multiple timelines" framework that is also common in science fiction. But note that you STILL are not changing YOUR past. YOUR past exists in a DIFFERENT universe than that in which you ended up after you went through the time machine. So...still no paradox. In this scenario, you CAN kill your mom before you are born, but it is not YOUR mom. It's the "universe y" equivalent of your mom, whereas you can from "Universe X". No paradoxes will arise, as long as the universe that you end up in is not the same one that you came from. If you come from "universe X", then you can murder a million different versions of your mom. You simply can't murder the "Universe X" version. Whcih can't happen, since travelling back in time automatically takes you to a DIFFERENT universe.

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_IronManDude_

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#65 _IronManDude_
Member since 2008 • 1595 Posts

See, you're all operating under the theory that time is linear, continuous. What if it isn't? What if time is a chaotic "cloud" of events that we just run through, but older moments still exist somewhere else, in that cloud? If we could unlock the door, and enter that cloud, we could see the past, and the future.

But that would follow the belief of fate. If that time cloud existed, it would mean that everyone's scripts are written. And that would naturally lead us to an expanded argument about God. And that would be a pretty sucky day on the OT.

I read about the idea that there was a grand copy of every moment ever recorded. And it was all left as an alternate reality, where IF WE HAD THE ABILITY, we could enter one of those infinite realities, and make a different choice. Take the second door instead of the first. Talk to the redhead instead of the blonde.

All of the universe is made of particles and atoms. What if we were to break an atom in front of our faces? What is behind our very existence? That alternate reality we spoke about? A black hole? There are much more important things to learn the secrets to than time travel.

Maybe one of those time travel scientists on the Discovery Channel should work on life after death.

NOTE: The place where I read the universes thing was not the lengthy post by MrGeezer.

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foxhound_fox

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#66 foxhound_fox
Member since 2005 • 98532 Posts

He did? I thought he said it wasn't? :?

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MrGeezer

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#67 MrGeezer
Member since 2002 • 59765 Posts

I can see traveling to the future, but I don't know about going back in time. I mean, if someone could time travel back in time, then why hasn't anyone from the future traveled here yet? (Assuming that person went back in time just to tell people he was from the future)

martialbullet

Many people speculate that even if time travel to the past is possible, that it would take so much energy that chances are no one would ever be able to do it.

Secondly, many people speculate that if time travel to the past is possible, that it would be impossible to travel back to a time before the time machine was created. And if this is the case, then this thoroughly explains why we haven't been visited by a staggering number of people from the future. It's because we haven't managed to build such a time machine yet. But as soon as we DO build such a time machine, it could be like the gates of hell opening up, with monsters from the future pouring through the gate.

To see why this might be the case, consider a proposed method for time travel: using a wormhole.

Wormholes are purely theoretical and have never been shown to actually exist. Even if the do exist, they are likely very tiny very unstable, and require simply staggering amounts of energy to exist.

But hey, let's suppose that we do manage to make a wormhole stable enough to be useful, large enough to allow a man to pass through it, and somehow make the wormhole spit the man out at the other end ALIVE, rather than as a bloody dead mass of shredded meat and bone. How would we use a wormhole to make a time machine?

Well, as we've seen, time travel to the future IS very possible. If you could create a wormhole in a lab, and accelerate one end of that wormhole to nearly the speed of light, let's suppose that we take that end of the wormhole far into distant space. Meanwhile, the other end of the wormhole still exists on Earth. Now, take the fast-moving end of the wormhole, and bring it back to Earth. A thousand years may have passed on the end of the wormhole attached to earth. While maybe only one year passed relative to the end of the wormhole that was shot through space really fast.

Here's the thing...if someone on the fast-moving end of the wormhole happens to pass through the wormhole after that end of the wormhole has been shot into the distant future, then travelling into that end of the wormhole would spit you out into the PAST. Specifically, you'd travel 999 years into the past. Instant time machine.

But the thing is, the wormhole IS the time machine. It more like imagining a literal hallway connecting two distant points in time. And the hallway didn't even EXIST until some scientist decided to make a wormhole 1000 years ago. You could conceivably go back in time, ut ONLY as far back as the earliest point at which the time machine was existed. Because it connects two points in time. It's like there is a doorway in each point of time that has access to the wormhole. If that wormhole does not EXIST in that specific point in spacetime, then the corridor is inaccessable. Time travel to the past MIGHT be possible (even if so impractical that it will never happen), but we STILL might not see any time travellers from the future for the sole reason that we haven't built a time machine yet. That we haven't yet provided a doorway through which the people of the future can pass.

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PannicAtack

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#68 PannicAtack
Member since 2006 • 21040 Posts
Where did he say it? Also, just because a smart person says something does not make it so.
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MrGeezer

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#69 MrGeezer
Member since 2002 • 59765 Posts

But your idea is impossible for a human. Maybe for a "geosynchronous clock", but a human could not withstand speed-of-light travel, it would rip him apart. As far-fetched as it sounds, my idea actually is more doable._IronManDude_

Humans could withstand ANY speed. SPEED doesn't kill people, ACCELERATION kills people. At a constant speed (even 99% of the speed of light), all physics within that frame of reference act EXACTLY the same as an object at rest. ALL reference frames that are moving AT A CONSTANT SPEED AND DIRECTION are in fact completely INDISTINGUISHABLE from within that frame of reference.

Humans could be moving at 99% of the speed of light. And as long as the the speed and direction of the ship are not changing, the human would be fine. The human would feel like he isn't moving at all. If anything, what would kill him is ACCELERATING to nearly the speed of light.

You can experience this in everyday practical situations. When you're on a plane and the plane accelerates to takeoff speed, you can feel it. You get jerked back in your seat. But as the plane reaches its cruising speed, it FEELS like you're not moving at all, even though you actually may be moving at a constant 500 miles per hour.

It's not speed that kills people, it's acceleration.

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MrGeezer

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#70 MrGeezer
Member since 2002 • 59765 Posts

See, you're all operating under the theory that time is linear, continuous. What if it isn't? What if time is a chaotic "cloud" of events that we just run through, but older moments still exist somewhere else, in that cloud? If we could unlock the door, and enter that cloud, we could see the past, and the future.

But that would follow the belief of fate. If that time cloud existed, it would mean that everyone's scripts are written. And that would naturally lead us to an expanded argument about God. And that would be a pretty sucky day on the OT.

I read about the idea that there was a grand copy of every moment ever recorded. And it was all left as an alternate reality, where IF WE HAD THE ABILITY, we could enter one of those infinite realities, and make a different choice. Take the second door instead of the first. Talk to the redhead instead of the blonde.

All of the universe is made of particles and atoms. What if we were to break an atom in front of our faces? What is behind our very existence? That alternate reality we spoke about? A black hole? There are much more important things to learn the secrets to than time travel.

Maybe one of those time travel scientists on the Discovery Channel should work on life after death.

NOTE: The place where I read the universes thing was not the lengthy post by MrGeezer.

_IronManDude_

Instead of a "cloud", popular physicist Briane Greene describes it as a "timespace loaf". Whereas relativity means that one can interpret different "slices" (differeing notions of the simultaneity of events, based on relative motion), but that the actual overal "loaf" (the entire totality of time and space) actually DOES NOT CHANGE. That the past really IS eternal, because it can't be thought of as something that is "gone". Rather, it's just an event existing at a certain set of coordinates in space and time. We're constantly MOVING through time, so it's difficult to think of TIME as being static. But try thinking about that. Try thinking of time as a road that we inevitably travel along its axis. Things FEEL different, but only because you don't have access to the non-changing immutable axis of time that exists behind you.

But look at it from another perspective. Look at it from Terminator rules. If Sarah Connor really and truly could not have been killed by The Terminator, then pretend that Sarah Connor was alive today. And pretend that Sarah Connor was you. Now, pretend that you opened the newspaper and saw that police had arrested a presumably crazy man who was later definitively PROVEN to have come from the goddamn future.

What would this mean? This would mean that your future likely IS predetermined. This would mean that the dilemna of whether to go to work tomorrow or instead stay home and get piss-faced drunk is completely and 100% irrelevant. Because if you DID get piss-faced drunk and subsequently get fired, due to the Guy-From-The-Future's perspective, then you WILL get drunk and fired in the FUTURE from your perspective. No matter how much he tells you to not get drunk or else you'll get fired, you HAVE to get drunk and fired. Because IT ALREADY HAPPENED. Even though, from YOUR perspective, it HASN'T happened yet.

Yeah, I know how much we like to value the notion that we actually have control over our futures. But our futures ARE someone else's past. That's no big revelation. John Wilkes Boothe can't choose to NOT murder Abraham Lincoln, and the 9/11 terrorists can't NOT attack the Twin Towers and The pentagon. We like to THINK of ourselves as being in a unique and special place in regards to history, in that we have the privilege of being in the one single sole spot in which we can make a change. The people of the past can't make a change, because their time is gone. The people of the future can't make a change because their time has not yet come.

But time travel into the past would shatter this to the core.

If we were to ever find someone from the furture, that would in itself indicate that we are NOT in control of our destinies. If the future ALREADY happened, then what you choose to do tomorrow IS no more changeable than John Wilkes Booth choosing to murder Lincoln. You THINK you're living in the present, but that's just from your perspective, and your perspective is irrelevant. It doesn't MATTER what you think, it only matters what you DO. And what you WILL do has already been decided.

That's an earth-shattering revelation, if it were ever to happen. But take comfort that if it DOES happen, that it probably won't affect you one bit. Because if you MUST murder a thousand babies because it ALREADY happened, then you also lack the ability to choose how you FEEL about learning the news that you'll murder a thousand babies. You might believe the future dude, you might think he's just crazy. But regardless, you'll still FEEL like you're in control of your thoughts and actions throughout the whole trip, and the future dude's information will not CHANGE you in the least. He can predict that you'll rob a bank, then you'll rob the bank knowing exactly that he predicted it. The difference is, in your mind, that you manage to BELIEVE that you actually had a choice in the matter. When the police arrest you, you will truly believe that you actually COULD have decided to NOT rob that bank.

If we accept that thoughts can influence actions, and if we can imagine that maybe our ACTIONS have already been decided, then it stands to reason that revealing that we have no free will will have no effect on ANYONE. That revelation won't CHANGE anything, it'll just make EVERY think them inevitable thoughts which lead to the inevitable actions which they have no control over.

Which basically means that from YOUR perspective, whether or not you're 100% guided by fate will not and cannot ever be the least bit relevant. Maybe we are, maybe we aren't. Even if we are guided by fate, and learned about that truth, then we wouldn't be able to do anything different with that information anyway. So...who really gives a ****?

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X360PS3AMD05

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#71 X360PS3AMD05
Member since 2005 • 36320 Posts
Forwards is possible allegedly.........
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YoJim8obaJoe

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#72 YoJim8obaJoe
Member since 2008 • 2653 Posts

there that black guy whos designed a time machine and theoretically will work but is to expensive for any country to gamble funding.Only problem is you can only travel back to as far as when the machine was turned on so say if i turned it on on new years 2010 that would be as far as i could travel back to

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Murj

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#73 Murj
Member since 2008 • 4557 Posts

The "simple" explanation...

SpaceMoose

I read the opening paragraph and my brain started to bleed. Can you put it into English for me? :(

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#74 carrot-cake
Member since 2008 • 6880 Posts

The "simple" explanation...

SpaceMoose


Thats not really time travel, as you are not free to go from any point in time to another. You can only 'travel' into the future, but not back.
Time travel would possibly be possible in the sense that you create parallel universes every time you time travel. Otherwise, it wouldn't make sense. That being said, are we the true default universe? Heh.

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CrazyyyDylan

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#75 CrazyyyDylan
Member since 2007 • 726 Posts
Well you can slow down time for yourself. It is called The Twin Paradox
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carrot-cake

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#76 carrot-cake
Member since 2008 • 6880 Posts

[QUOTE="SpaceMoose"]

The "simple" explanation...

Murj

I read the opening paragraph and my brain started to bleed. Can you put it into English for me? :(


Basically, we are holding clocks which are at the same time initially, If I start travelling faster relative to you, my clock will tick slower than yours. Basically, if I'm travelling at near c speeds relative to you, then you are going to age faster.

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Agent-Zero

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#77 Agent-Zero
Member since 2009 • 6198 Posts
You know Albert Einstein was brillant in math. But in everything else he was basically special ed right?MgamerBD
I thought he flunked math in school? Haha stupid rumors. What is true is that he was a genius and a ladiesman
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MrGeezer

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#78 MrGeezer
Member since 2002 • 59765 Posts

[QUOTE="SpaceMoose"]

The "simple" explanation...

carrot-cake


Thats not really time travel, as you are not free to go from any point in time to another. You can only 'travel' into the future, but not back.

So? It's absolutely still time travel.

Look, suppose you get in your car and decide to take a tour. Using only your car, you can get as far as the coast, but you can't travel across the ocean. Does that mean that you DIDN'T literally travel through space as you were driving to the coast?

Travelling through time doesn't require the ability to travel to EVERY point in time. Similarly, travelling through space doesn't require the ability to travel to EVERY point in space. If you managed to travel to ANY point in time or space, then you travelled.

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Solid_Tango

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#79 Solid_Tango
Member since 2009 • 8609 Posts
Its indeed possible, but you ll need alot of energy and when i say a lot i mean an effin lot
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Solid_Tango

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#80 Solid_Tango
Member since 2009 • 8609 Posts

[QUOTE="_IronManDude_"]

See, you're all operating under the theory that time is linear, continuous. What if it isn't? What if time is a chaotic "cloud" of events that we just run through, but older moments still exist somewhere else, in that cloud? If we could unlock the door, and enter that cloud, we could see the past, and the future.

But that would follow the belief of fate. If that time cloud existed, it would mean that everyone's scripts are written. And that would naturally lead us to an expanded argument about God. And that would be a pretty sucky day on the OT.

I read about the idea that there was a grand copy of every moment ever recorded. And it was all left as an alternate reality, where IF WE HAD THE ABILITY, we could enter one of those infinite realities, and make a different choice. Take the second door instead of the first. Talk to the redhead instead of the blonde.

All of the universe is made of particles and atoms. What if we were to break an atom in front of our faces? What is behind our very existence? That alternate reality we spoke about? A black hole? There are much more important things to learn the secrets to than time travel.

Maybe one of those time travel scientists on the Discovery Channel should work on life after death.

NOTE: The place where I read the universes thing was not the lengthy post by MrGeezer.

MrGeezer

Instead of a "cloud", popular physicist Briane Greene describes it as a "timespace loaf". Whereas relativity means that one can interpret different "slices" (differeing notions of the simultaneity of events, based on relative motion), but that the actual overal "loaf" (the entire totality of time and space) actually DOES NOT CHANGE. That the past really IS eternal, because it can't be thought of as something that is "gone". Rather, it's just an event existing at a certain set of coordinates in space and time. We're constantly MOVING through time, so it's difficult to think of TIME as being static. But try thinking about that. Try thinking of time as a road that we inevitably travel along its axis. Things FEEL different, but only because you don't have access to the non-changing immutable axis of time that exists behind you.

But look at it from another perspective. Look at it from Terminator rules. If Sarah Connor really and truly could not have been killed by The Terminator, then pretend that Sarah Connor was alive today. And pretend that Sarah Connor was you. Now, pretend that you opened the newspaper and saw that police had arrested a presumably crazy man who was later definitively PROVEN to have come from the goddamn future.

What would this mean? This would mean that your future likely IS predetermined. This would mean that the dilemna of whether to go to work tomorrow or instead stay home and get piss-faced drunk is completely and 100% irrelevant. Because if you DID get piss-faced drunk and subsequently get fired, due to the Guy-From-The-Future's perspective, then you WILL get drunk and fired in the FUTURE from your perspective. No matter how much he tells you to not get drunk or else you'll get fired, you HAVE to get drunk and fired. Because IT ALREADY HAPPENED. Even though, from YOUR perspective, it HASN'T happened yet.

Yeah, I know how much we like to value the notion that we actually have control over our futures. But our futures ARE someone else's past. That's no big revelation. John Wilkes Boothe can't choose to NOT murder Abraham Lincoln, and the 9/11 terrorists can't NOT attack the Twin Towers and The pentagon. We like to THINK of ourselves as being in a unique and special place in regards to history, in that we have the privilege of being in the one single sole spot in which we can make a change. The people of the past can't make a change, because their time is gone. The people of the future can't make a change because their time has not yet come.

But time travel into the past would shatter this to the core.

If we were to ever find someone from the furture, that would in itself indicate that we are NOT in control of our destinies. If the future ALREADY happened, then what you choose to do tomorrow IS no more changeable than John Wilkes Booth choosing to murder Lincoln. You THINK you're living in the present, but that's just from your perspective, and your perspective is irrelevant. It doesn't MATTER what you think, it only matters what you DO. And what you WILL do has already been decided.

That's an earth-shattering revelation, if it were ever to happen. But take comfort that if it DOES happen, that it probably won't affect you one bit. Because if you MUST murder a thousand babies because it ALREADY happened, then you also lack the ability to choose how you FEEL about learning the news that you'll murder a thousand babies. You might believe the future dude, you might think he's just crazy. But regardless, you'll still FEEL like you're in control of your thoughts and actions throughout the whole trip, and the future dude's information will not CHANGE you in the least. He can predict that you'll rob a bank, then you'll rob the bank knowing exactly that he predicted it. The difference is, in your mind, that you manage to BELIEVE that you actually had a choice in the matter. When the police arrest you, you will truly believe that you actually COULD have decided to NOT rob that bank.

If we accept that thoughts can influence actions, and if we can imagine that maybe our ACTIONS have already been decided, then it stands to reason that revealing that we have no free will will have no effect on ANYONE. That revelation won't CHANGE anything, it'll just make EVERY think them inevitable thoughts which lead to the inevitable actions which they have no control over.

Which basically means that from YOUR perspective, whether or not you're 100% guided by fate will not and cannot ever be the least bit relevant. Maybe we are, maybe we aren't. Even if we are guided by fate, and learned about that truth, then we wouldn't be able to do anything different with that information anyway. So...who really gives a ****?

Wow dude that was a little bit depressing :(
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Dystopian-X

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#81 Dystopian-X
Member since 2008 • 8998 Posts

If you want to travel to the past just make your time machine run @ the speed of light...but in reverse! ;D

[QUOTE="SpaceMoose"]

The "simple" explanation...

Murj

I read the opening paragraph and my brain started to bleed. Can you put it into English for me? :(

It means that time travel occurs all the "time". Someone in movement is already "time travelling" from/to another's reference frame. This is more evident at high speed and greater distance. For example when our telescopes look at distant galaxies that are millions of light years away we are actually looking at how those galaxies looked all those millions of years in the past.

The funny thing is that the simplest explanation in fact makes the type of time travel we want impossible since there is nothing that travels faster than the speed of light, neither matter nor information can. Also according to this nothing occurs at the same time. If we are to go by Einstein's theories time travel is theoretically possible but it's not really possible at the same time. WHAT HAVE YOU DONE SNAKE? You've created a Pime Taradox!

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BiancaDK

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#82 BiancaDK
Member since 2008 • 19092 Posts

I can´t recall Einstein having said that, but alright. Did he not "just" propose a theory, and going by that theory, other people derived the conclusion that time travel is possible? I dunno´.

Anyways, "possible" being the wonderful word that it is, i´d say time travel is atleast a possibility.

Although, in the tutoring words of John Noble Wilford: "Efforts to conceptualize the history and structure of the universe were already running into trouble because . . . the universe was not as uniform as had been assumed"

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2mrw

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#83 2mrw
Member since 2008 • 6206 Posts

[QUOTE="Murj"]

[QUOTE="SpaceMoose"]

The "simple" explanation...

carrot-cake

I read the opening paragraph and my brain started to bleed. Can you put it into English for me? :(


Basically, we are holding clocks which are at the same time initially, If I start travelling faster relative to you, my clock will tick slower than yours. Basically, if I'm travelling at near c speeds relative to you, then you are going to age faster.

ok, u didn't explain anything. 2 clocks runing faster than each other, i need another complex but simpler than of Wikipedia's..........anyone care to explain Einstein theory simply???

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Oleg_Huzwog

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#84 Oleg_Huzwog
Member since 2007 • 21885 Posts

Time travel is fact, not theory... but only in the forward direction.

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MrGeezer

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#85 MrGeezer
Member since 2002 • 59765 Posts

ok, u didn't explain anything. 2 clocks runing faster than each other, i need another complex but simpler than of Wikipedia's..........anyone care to explain Einstein theory simply???

2mrw

Consider two frames of reference in which time passes differently. The clock on the ground is "Clock X". The clock flying at supersonic speeds is "clock Y".

If Clock Y ticks more slowly than Clock X, then time is passing more slowly for Clock Y. Granted, the difference is small, but let's magnify that difference to see the concept better.

If time is passing 100 times faster for Clock X, then 100 years from Clock X's position would be equivalent to ONE year from Clock Y's perspective. When Clock X and Clock Y meet, one clock has aged 100 years, the other has only aged ONE year. Clock Y has essentially travelled 99 years into the future.

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Ontain

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#86 Ontain
Member since 2005 • 25501 Posts

[QUOTE="dog64"]

Maybe into the future a little, but not "Back to the Future" style.

DarkGamer007

Traveling to the future would be irrelavent because once you came back to the present time, the future you saw would no longer exist because you know about it, and even traveling back in time could and would have catostrpohic events for the present time/future.

not always. if you take what you learned from the future and don't alter it in any big way the future would be preserved. like you could win a bet friendly wager with your friend and that would do little to effect the the future world.
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II_Seraphim_II

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#87 II_Seraphim_II
Member since 2007 • 20534 Posts
Like Kevin Garnett, ANYTHING IS POSSIBLE!!!lol_haha_dead
Never thought I'd be on boat! It's a big blue watery road!
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kaangonultas

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#88 kaangonultas
Member since 2008 • 1647 Posts
IF you launch off into space with a shuttle and while travelling in space come near a black hole and manage to loop around the black hole (which is almost impossible) and come back to earth you would find that earth has aged considerably more than yourself. You woul've aged 12 day for example and people on earth would have aged over a 100 years.
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kaangonultas

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#89 kaangonultas
Member since 2008 • 1647 Posts
mass bends space and time. So something massive like a black hole can cause a change in space time around it
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Darthmatt

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#90 Darthmatt
Member since 2002 • 8970 Posts

Yes, into the future. Because the perception of time is relative to the velocity of the observer against the velocity of the physical universe. As a matter of fact, every moment you are time traveling into the future... at the speed of now :o

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xXSecksXx

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#91 xXSecksXx
Member since 2007 • 468 Posts

Yeahr he is, Time is not constant. Depending on the speed your going at, time will go by at a different rate. Even when your sitting in a car, you're essentially time travelling, although by a very minimal margin. Time for you might be going by 0.00001 seconds slower than the outside world, but if you were to travel at near light speed, time would be going much more slower compared to someone not in motion. Thus 1 year for you might be 40 years for them.

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John_A_Zoidberg

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#92 John_A_Zoidberg
Member since 2009 • 75 Posts
You know Albert Einstein was brillant in math. But in everything else he was basically special ed right?MgamerBD
yeah, he was so awful at physics
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KungfuKitten

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#93 KungfuKitten
Member since 2006 • 27389 Posts

I'm doing it constantly.

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anDy-PeNGuiN

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#94 anDy-PeNGuiN
Member since 2005 • 1201 Posts

Nothing can travel at the speed of light, except from light of course.. It would take huge amounts of energy just to reach a fraction of the speed of light and the closer you 'push' to reach the speed of light, the energy requirements are exponential.. its why particle accelerators do not accelerate to the speed of light as the energy requirement would be infinite.

As acceleration and gravity are closely linked, if you were to be close enough to something of an exceptionally strong gravitational field, the time dilation.. what would seem like 10 minutes would be about.. 3 years? on earth... so all you need to do is create an exceptionally strong gravitational field (like the event horizon of a black hole) or accelerate up to a good proportion of the speed of light.. 70 percent maybe... yeah

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Acemaster27

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#95 Acemaster27
Member since 2004 • 4482 Posts
It's only possible forward, not backward.
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194197844077667059316682358889

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#96 194197844077667059316682358889
Member since 2003 • 49173 Posts

Nothing can travel at the speed of light, except from light of course.. It would take huge amounts of energy just to reach a fraction of the speed of light and the closer you 'push' to reach the speed of light, the energy requirements are exponential.. its why particle accelerators do not accelerate to the speed of light as the energy requirement would be infinite.

As acceleration and gravity are closely linked, if you were to be close enough to something of an exceptionally strong gravitational field, the time dilation.. what would seem like 10 minutes would be about.. 3 years? on earth... so all you need to do is create an exceptionally strong gravitational field (like the event horizon of a black hole) or accelerate up to a good proportion of the speed of light.. 70 percent maybe... yeah

anDy-PeNGuiN
Time dilation is asymptotic approaching lightspeed, so the dilation doesn't get nearly that dramatic until very close to c. At 70% of lightspeed, 1 minute 24 seconds would pass for the "at rest" observer for every 1 minute that the traveler experienced.
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xXDante666Xx

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#97 xXDante666Xx
Member since 2004 • 3102 Posts

Nothing can travel at the speed of light, except from light of course.. It would take huge amounts of energy just to reach a fraction of the speed of light and the closer you 'push' to reach the speed of light, the energy requirements are exponential.. its why particle accelerators do not accelerate to the speed of light as the energy requirement would be infinite.

As acceleration and gravity are closely linked, if you were to be close enough to something of an exceptionally strong gravitational field, the time dilation.. what would seem like 10 minutes would be about.. 3 years? on earth... so all you need to do is create an exceptionally strong gravitational field (like the event horizon of a black hole) or accelerate up to a good proportion of the speed of light.. 70 percent maybe... yeah

anDy-PeNGuiN

Naw, there is plenty of things that travel faster than the speed of light. For starters just to get you an idea, space itself travels faster than the speed of light, hence why light is able to travel through it at all.

Also look up dark matter...it actually is the cause for space itself expanding. Because contrary to the belief that we should be slowing down do to everything's gravitational effect on each other. We are actually accelerating more and more because of dark matter. Gravity isn't the highly regarded powerful big brother we once thought it was.

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Oleg_Huzwog

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#98 Oleg_Huzwog
Member since 2007 • 21885 Posts

[QUOTE="anDy-PeNGuiN"]

Nothing can travel at the speed of light, except from light of course.. It would take huge amounts of energy just to reach a fraction of the speed of light and the closer you 'push' to reach the speed of light, the energy requirements are exponential.. its why particle accelerators do not accelerate to the speed of light as the energy requirement would be infinite.

As acceleration and gravity are closely linked, if you were to be close enough to something of an exceptionally strong gravitational field, the time dilation.. what would seem like 10 minutes would be about.. 3 years? on earth... so all you need to do is create an exceptionally strong gravitational field (like the event horizon of a black hole) or accelerate up to a good proportion of the speed of light.. 70 percent maybe... yeah

xaos

Time dilation is asymptotic approaching lightspeed, so the dilation doesn't get nearly that dramatic until very close to c. At 70% of lightspeed, 1 minute 24 seconds would pass for the "at rest" observer for every 1 minute that the traveler experienced.

Yes, even at 99% the difference is only about 7 minutes passing for every 1 minute.

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MrGeezer

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#99 MrGeezer
Member since 2002 • 59765 Posts

[QUOTE="anDy-PeNGuiN"]

Nothing can travel at the speed of light, except from light of course.. It would take huge amounts of energy just to reach a fraction of the speed of light and the closer you 'push' to reach the speed of light, the energy requirements are exponential.. its why particle accelerators do not accelerate to the speed of light as the energy requirement would be infinite.

As acceleration and gravity are closely linked, if you were to be close enough to something of an exceptionally strong gravitational field, the time dilation.. what would seem like 10 minutes would be about.. 3 years? on earth... so all you need to do is create an exceptionally strong gravitational field (like the event horizon of a black hole) or accelerate up to a good proportion of the speed of light.. 70 percent maybe... yeah

xXDante666Xx

Naw, there is plenty of things that travel faster than the speed of light. For starters just to get you an idea, space itself travels faster than the speed of light, hence why light is able to travel through it at all.

Also look up dark matter...it actually is the cause for space itself expanding. Because contrary to the belief that we should be slowing down do to everything's gravitational effect on each other. We are actually accelerating more and more because of dark matter. Gravity isn't the highly regarded powerful big brother we once thought it was.

You're actually thinking of dark energy, not dark matter. They're two different things.

But when people refer to the maximum speed anything can travel, they are only referring to its speed through space. Yes, it is true that space itself can expand at an unlimited speed, there is no maximum limit. But for everything travelling through space, the speed of light is the upper limit.