Time Travel?

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Originally Posted by Xei

orbiting the Earth is irrelevant

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Well... Superman did it!



Someone was going to say it sooner or later. Homer said it on Simpsons earlier, I couldn't resist... But on a more serious note, I believe I read somewhere that Stephen Hawking's theory was that if we were able to warp a certain region of spacetime the right way, and when that happens, it would not be possible to travel back before the date the spacetime was warped, or something along those lines. Basically when it happens, you can't go back before it happened, which explains why we aren't overrun with people dropping in from the future. I think the alternate realities being created one explains it a bit better, though.

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Originally Posted by ExoByte

Thats another reason why I believe Time Travel isnt and never will be possible. The universe wouldnt let it be possible, as everything is a paradox. It'd be a rip in time and throw everything off balance. You go back in time, kill your mother. You wont be born, so you wont be able to go back in time. Because you cant go back, you cant kill your mother, thus you'll be born. And the cycle continues. Its the same as whatever you do.

In my opinion, there are a few possible reasons we never get the time travel technology:

1. Its impossible
2. Humans became Smart enough to realize the damage it could do and never use it
3. The human race ultimately blows itself up before learning the technology

And I think everyone can agree that 1. and 3. are the most likely here.

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Another reason that points to reality being a sort of extended dream, paradoxes! There are paradoxes in the astral. And I've time traveled before. Or rather my perception of time changed creating a different concept of time. It can speed up and slow down depending on your perception of it--relativity?

http://www.reactionface.info/sites/d...157605-580.jpg

is telepathy time travel?
humor me, someone. assume any type of telepathy is true, wouldn't that be a form of time travel? if i can anticipate the situation, maybe

I think you're talking about clairvoyance, telepathy is when you read minds.

A memory that only works in one direction is only being half-used.

i thought you had to know what would happen first before you could manipulate it

Im a matt smith doctor who fan, but I dont think time travel is how it happens on tv shows.

I think our sci-fi love for time travel forgets this whole thing called space. Its way beyond me but I know that space and time are intimately connected. We shouldn't think of space of this thing outside of ourselves - we are space because we are the result of universe expanding.

So were not just talking about traveling back into time, or to a future time period. Were also talking about traveling back into a previous space, or a future space! First and foremost the space you inhabit is your own body. So what does that really mean for time travel? Is it re-experiencing your youth? Experiencing your future?

How could you experience a time where you don't physically live in, without leaving your space, body? How could you possibly smack a portion of space onto a previous portion of space, or a future one? That's why physical time travel is a paradox. But not psychic time travel.

And the whole traveling nearly at the speed of light to travel into the future, I dont really consider that time traveling. The word time traveling assumes you can get back to your original time period. If its a one way ticket its not really time traveling, its just what we do every moment already!

that's why i mentioned telepathy. 2 points in space at the same time. i can't explain it, but i've experienced it, then went far beyond a shared mind. i've even manipulated my own body while inside of someone else before. i knew what was happening, but didn't realize i was doing it. humiliating is an understatement.

So... nobody else found it weird that the OP literally seems to have fallen five years into the future about a week after he posted the thread, and has now continued posting in it as if he didn't notice anything?

...just me then?

"The end is nigh," says the preacher man.

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Originally Posted by Xei

So... nobody else found it weird that the OP literally seems to have fallen five years into the future about a week after he posted the thread, and has now continued posting in it as if he didn't notice anything?

...just me then?

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That's a rather ridiculously extended set up for a troll.

Time travel is easy. Time is always traveling.

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Originally Posted by ExoByte

Thats another reason why I believe Time Travel isnt and never will be possible. The universe wouldnt let it be possible, as everything is a paradox. It'd be a rip in time and throw everything off balance. You go back in time, kill your mother. You wont be born, so you wont be able to go back in time. Because you cant go back, you cant kill your mother, thus you'll be born. And the cycle continues. Its the same as whatever you do.

In my opinion, there are a few possible reasons we never get the time travel technology:

1. Its impossible
2. Humans became Smart enough to realize the damage it could do and never use it
3. The human race ultimately blows itself up before learning the technology

And I think everyone can agree that 1. and 3. are the most likely here.

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Hahaha I agree, 2 wouldn't happen. Take a second to ponder this.. What if we all exist in our own personal "parallel universes" that can be influenced by and influence others based off of some sort of energy. Therefore you are my interpretation of yourself in my own universe, coming from your universe. If one were to possibly time travel and destroy themselves, they would simply disappear and you would not be aware of it.. which would be a way of re-balancing the paradox. So in other words, if you time traveled and ended up destroying yourself, you'd be gone from dreamviews and nobody would have a clue of you ever having existed. This post would be gone too.

I'm definitely not saying it's right, but I don't like to think that something is impossible. It's just too hard for me to accept. I also think that the theory I just came up with up there, is most likely a crock of shit. But hey, you never know! (=

With the recent discovery of Neutrinos that surpass the speed of light, I may be eating my own words. Time Travel is now theoretically possible, or at least direct observation of past events could be, with intervention and interference being the impossible part.

The "cosmic speed limit" so to speak, is the speed of light. A whopping 300 000 km/s, which is a ridiculously ludicrous speed. No object, nothing that contains mass, is able to achieve this speed. This is why only light can travel that fast, as photons are entirely mass-less particles.

An object can go up to 99.99999% the speed of light, but will never completely reach it as long as it contains mass. But as an object reaches this speed, a funny thing happens. Time dilates. If you were on a spacecraft, traveling near the speed of light. Every day on the craft could amount to an entire year on Earth, if not more. Time slows to an impossibly slow speed as you reach the speed of light, and actually stands entirely still AT the speed of light. A photon of light travelling from a star 600 light years away, takes -in our reference frame- 600 years to arrive. However, if you were to 'ride' that same photon, the journey would be (to you) instantaneous. You'd leave in the year 2012, arrive in 2612 but feel like not a second had passed.

Neutrinos on the other hand, objects with a small amount of mass (and therefore should be impossible to break the light barrier), have been shown to be able to travel faster than light itself. This opens up a multitude of possibilities, and in fact break a lot of our knowledge about physics. This could, theoretically, mean that transmitting information back in time is actually possible. Or even more interesting still, receiving information from a future date.

Keep in mind, this is a very rudimentary and simplistic analysis that was used to outline an extremely complex concept, but this should give the basic idea on the, now hypothetically possible, scenario.

If you think about it logically, taking quantum theory into account, the universe would present no possibility for a paradox. You would find yourself in nearly impossible situations rather than have the opportunity to accomplish what you went into the past to do because it would be impossible to nullify the reason why you time traveled.

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Originally Posted by ExoByte

An object can go up to 99.99999% the speed of light, but will never completely reach it as long as it contains mass. But as an object reaches this speed, a funny thing happens. Time dilates. If you were on a spacecraft, traveling near the speed of light. Every day on the craft could amount to an entire year on Earth, if not more. Time slows to an impossibly slow speed as you reach the speed of light, and actually stands entirely still AT the speed of light. A photon of light travelling from a star 600 light years away, takes -in our reference frame- 600 years to arrive. However, if you were to 'ride' that same photon, the journey would be (to you) instantaneous. You'd leave in the year 2012, arrive in 2612 but feel like not a second had passed.

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This is the theory Stephen Hawking endorses (or came up with I don't know)

I think it was Einstein.

Indeed, it is a consequence of the fact that light always travels at the same speed relative to yourself. So to talk about exceeding the speed of light makes no sense, space and time can't work that way.

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Originally Posted by becomingagodo

no

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Would you care to elaborate?

Time travel into the past is very easy from a lucid dream. One just needs to get onto the etheric plane and with a bit of jiggery pokery time travel is easy. Unfortunately one can only be a witness. Travel into the future is a completely different matter requiring dream quests which are notoriously difficult to master.

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Originally Posted by Xei

Indeed, it is a consequence of the fact that light always travels at the same speed relative to yourself. So to talk about exceeding the speed of light makes no sense, space and time can't work that way.

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The speed of light is a constant, traveling 299 792 458 metres per second, regardless of my presence.

A constant relative to what?

You are sat on Earth and you shoot a laser pulse vertically into space, which, naturally, flies away at the speed of light. Then you launch a rocket, which goes chasing after the laser at a third of the speed of light. From your perspective, how fast is the laser flying away from the rocket? From the rocket's perspective, how fast is the laser flying away?

The light's speed relative to its source still remains constant, regardless of how it is perceived by any rockets or sentient beings. 299 792 458 metres per second

How about you answer the two questions..?

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Originally Posted by Xei

How about you answer the two questions..?

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Yessir.

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Originally Posted by Xei

A constant relative to what?

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Originally Posted by Izrail

The light's speed relative to its source

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Originally Posted by Xei

You are sat on Earth and you shoot a laser pulse vertically into space, which, naturally, flies away at the speed of light. Then you launch a rocket, which goes chasing after the laser at a third of the speed of light. From your perspective, how fast is the laser flying away from the rocket?

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Really, really fast.

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Originally Posted by Xei

From the rocket's perspective, how fast is the laser flying away?

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Three times as fast.

The light's speed is still constant, however.