>>8 that's not traveling in time though, observing the past is already theoretically possible through wormholes, as one could travel deep into space and observe the light from earth reach them. So if they traveled x light years through a wormhole they would see earth from x years ago.
>>1 there are different concepts of time travel, i.e. whether you'd alter the future when traveling backwards or if you'd return to a future where your effects on the past don't exist, and even upon traveling back in time, they might not have made themselves obviously from the future. Also, time travel could be possible but it is just the case that no one ever figured out how it worked, so never traveled back in time using such technology.
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Anonymous2007-01-15 12:09
>>12
Observing the past is all you can do. Yes, it counts.
No it doesn't. I don't travel backwards in time when I look at something a great distance away!
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Anonymous2007-01-15 12:16
It takes a lot of energy to go back in time and it is dangerous.
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Anonymous2007-01-15 13:30
>>14
You see the past whenever you look at something. By the time the light reaches your retinae and is processed, time has passed wherever the light reflected off of.
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Anonymous2007-01-15 13:46
>>15
Truth. This is why we don't see time travellers. They can only afford to send 1 or 2 back, some of them probably just appear in the center of the sun or something and it takes more and more energy to further back you want to send someone so if they invent time travel 1000 years from now, they may prefer to send 10 people back 100 years in time instead of 1 person 1000 years in time.
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Anonymous2007-01-15 14:53
How do you control where you end up in the other time? We don't know of an absolute reference point to work with. If you go to last week, well last week the Earth was at a different place in space relative to anything outside the Earth.
Do you need to house a special beacon that exists in all time so that you can be positioned relative to it no matter what time you go to? How the hell do you manage to set up the beacon in the past in the first place? The best you can do is build it now and use it for as long as it can stay put.
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Anonymous2007-01-15 14:54
How about this: the past doesn't actually exist, you can't fucking time travel, end of story.
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Anonymous2007-01-15 15:16
We've already been visited by time travelers, its just that we confuse them with aliens. All UFOs are future humans examining the Earth.
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Anonymous2007-01-15 16:30
That's only marginally less absurd than aliens visiting the Earth.
Yes, but you are observing the past, not traveling through time. I entirely agree that it's possible to observe the past, but this doesn't constitute traveling backwards in time.
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Anonymous2007-01-16 6:31
Time is an arbitary, artificial frame of reference.
It wasn't even established in the physical world until relatively recnetly when they attatched it to the vibrations of a particular molecule.
Without a solid point of reference, it'd be impossible to do any sort of 'traveling' since you'd have no measure of how far you've traveled or in which direction. Kind of like driving on a totally unfamiliar freeway system with no signs or any other method of getting your bearings. Even if you could move on the road, you'd have no way of telling where you are.
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Anonymous2007-01-16 6:37
Time is an arbitary, artificial frame of reference.
It wasn't even established in the physical world until relatively recnetly when they attatched it to the vibrations of a particular molecule.
Without a solid point of reference, it'd be impossible to do any sort of 'traveling' since you'd have no measure of how far you've traveled or in which direction. Kind of like driving on a totally unfamiliar freeway system with no signs or any other method of getting your bearings. Even if you could move on the road, you'd have no way of telling where you are.
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Anonymous2007-01-16 9:39
Spelling is an arbitrary, artificial frame of reference.
It wasn't even established in the grammar world until relatively recently when they attached it to the vibrations of a particular sentence.
Without a solid point of reference, it'd be impossible to do any sort of 'writing' since you'd have no measure of how far you've written or in which direction. Kind of like driving on a totally unfamiliar freeway system with no signs or any other method of getting your bearings. Even if you could write on the road, you'd still be a retard.
That is a fuckin good point man. but i also think that time travel wouldnt work if you tried to go back in time b4 you invented your time machine also.
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Anonymous2007-01-17 7:34
Oh also, i've heard from a very scientifically minded friend, who also has calculated that the amount of energy required to send just one atom of any material back in any amount of time would require more than 10 billion times the amount of energy allready existing in the whole universe. so there. I dont think we'll be goin thru time anytime soon.