Time Travel possible?

[Darth Desolus]

I want to know what your views on the subject are. Do you ever think we will gain the technological expertise to accomplish true time or dimensional travel?

[[KMA]Avenger]

in a nutshell...yes, i think it is possible to both dimensional shift and time travel, however time travel would be the most destructive thing we could ever do to ourselves so i doubt it would be anywhere near our life time, we would need a degree of self control and invisibility that is unimaginable at our present state of mental attitude and evolution.

if you like this kind of subject i suggest you find out more about "TOE Theory". TOE=Theory of everything.

basically whatever man can think of does in fact actually exist

[Biscuit]

Not possible. Simple as

[Tacet]

No - my theory is simple, if it was possible, then surely we would have found some ppl from the future wandering amongst us.

Mankind's technologic advancement is too slow to give any kind of indication that we had help from outside. True, advancement might seem fast, but most current technological advancement builds upon a few ground breaking discoveries (electricity, wave theory, etc...) from the previous century. Those alone are certainly not indication of interference from future visitors (who I doubt would be able to leave a society as rotten as ours alone).

[Fear Of The Duck]

1. "toe theory" - there's no such animal. there's "toe candidate theories". tens of them scientific, hundreds (thousands??) magical. the key is the answer to the question "what is time-space?". for now nobody knows.

2. time travel is a reality. we are all constantly traveling in time to the future.

3. dimentional travel is a reality. whenever you travel you travel in 4 dimentions (3 spatial + time)

[Tacet]

2. time travel is a reality. we are all constantly traveling in time to the future.

3. dimentional travel is a reality. whenever you travel you travel in 4 dimentions (3 spatial + time)

That's true and well put. I'd beg to differ on the 4'th dimension though. I've had a chemics lecturer who argued that it's only a half dimension, because you can only travel in one direction, unlike the "proper" dimensions where both ways are possible. Thus, 3.5 dimensions (which still supports your definition of dimentional travel )

[semper]

depends what you consider time travel!

One view is that if it were possible, one would jump ahead of light and look onto the earth or whatever from when the light was rebounded, let out whatever.

Next view I saw on channel 5 a few years, you see a man theorised that is one created a vortex using lasers and had it switched on for lets say 100 years. If something happened at the end of the period that was negative, he could send a coded transmission back using particles to warn of what was coming. Not necessarily time travel, but sort of a time moving. I cant explain this theory in full, as I was but a wee boy when the show was on and the physics bored me immensely.

Then of course we can also debate, but thats not what you mean ne way.

Finally is the angle of the supernatural. Does magic, or the powers of the spirit and supernatural actually exist? Who knows for sure?!

[Fear Of The Duck]

Next view I saw on channel 5 a few years, you see a man theorised that is one created a vortex using lasers and had it switched on for lets say 100 years. If something happened at the end of the period that was negative, he could send a coded transmission back using particles to warn of what was coming. Not necessarily time travel, but sort of a time moving. I cant explain this theory in full, as I was but a wee boy when the show was on and the physics bored me immensely.

that wouldn't work.
1. it might be theoretically possible to travel back in time but not to the same area of space.
2. it might be theoretically possible to send a particle back in time to the same area of space (tachyons) but not information as this causes paradoxes (so yeah, send particles but they cannot contain any coded transmissions).
how the world would know which particle carries information and which doesn't i have no idea (who has?)

[Don Lewis]

Didn't some guy stick an atomic clock on a concord and send it around the world? When it landed and compared to another atomic clock it was several mili-seconds behind the one that did not fly around the world. Thus proving that moving very very fast would cause time to slow down for you effectively speeding time up around you causing the effect of going into the future.

Or something along those lines,

Don.

[papa~smurf]

since he lived in the same town as i do, thought i add this:

http://www.pbs.org/wgbh/nova/time/sagan.html

[semper]

Next view I saw on channel 5 a few years, you see a man theorised that is one created a vortex using lasers and had it switched on for lets say 100 years. If something happened at the end of the period that was negative, he could send a coded transmission back using particles to warn of what was coming. Not necessarily time travel, but sort of a time moving. I cant explain this theory in full, as I was but a wee boy when the show was on and the physics bored me immensely.

that wouldn't work.
1. it might be theoretically possible to travel back in time but not to the same area of space.
2. it might be theoretically possible to send a particle back in time to the same area of space (tachyons) but not information as this causes paradoxes (so yeah, send particles but they cannot contain any coded transmissions).
how the world would know which particle carries information and which doesn't i have no idea (who has?)

Oh really Corran? You the seasoned time traveller now? There is nothing to say you couldnt go back to the same area, not necessarily the same place anymore then I can come and merge to be in the same place as you are this very minute. If you want to say the same thing cannot exist in the same place at the same time, sending anything back would not be the same thing as it would have experience the effects of time travel/gained the empirical knowledge of such. There fore it would not be the same thing. Added to that what is existing? If you wanted a loose definition then there is a way something can exist in two places at once, if a black hole were involved.

Not information? Well who is to say we cannot cause a paradox? We cant predict the result as much as we can predict what we can and cant do with the ability to time travel. If you say it is possible to send particles back it is easy enough to agree upon a series of codes (similar to morse code) at the start of the experiment and using timed waves of particles or types (helium isotopes..whatever.....yadda yadda)

SO! In the immortal words of master Yoda..."So certain are you?"..."tehehehehe"...."Much to learn you still have."

[Fear Of The Duck]

Didn't some guy stick an atomic clock on a concord and send it around the world? When it landed and compared to another atomic clock it was several mili-seconds behind the one that did not fly around the world. Thus proving that moving very very fast would cause time to slow down for you effectively speeding time up around you causing the effect of going into the future.

Or something along those lines,

Don.

this is called time dilation

since he lived in the same town as i do, thought i add this:

http://www.pbs.org/wgbh/nova/time/sagan.html

aye. i've always liked this fella.

First of all, it might be that you can build a time machine to go into the future, but not into the past

yes. that'd be anything that moves ridiculously fast and is required to turn around at some stage.

but sometimes he can say something stupid:

Secondly, it might be that time travel into the past is possible, but they haven't gotten to our time yet,

so how long will i need to wait for them to visit AD 2008 like? 10 yrs? or maybe 15 yrs from now i'll open a morning paper and read "time travellers from the future visited 2008". than there'll be some pictures showing them talking to bush and putin back in 2008...

Oh really Corran?

ahh who knows?? serously like...

You the seasoned time traveller now?

aye.

we are all constantly traveling in time to the future.

kinda monodirectional.. but still...

If you want to say the same thing cannot exist in the same place at the same time,

this is definetely true for stormtroopers helmets and bulkheads

If you wanted a loose definition then there is a way something can exist in two places at once, if a black hole were involved.

ya mean schwarzschild wormholes and einstein-rosen bridge?

Not information? Well who is to say we cannot cause a paradox? We cant predict the result as much as we can predict what we can and cant do with the ability to time travel. If you say it is possible to send particles back it is easy enough to agree upon a series of codes (similar to morse code) at the start of the experiment and using timed waves of particles or types (helium isotopes..whatever.....yadda yadda)

i don't say "it is possible to send particles", i say "it might be theoretically possible".
or might not.

when i was saying about travelling back in time to the same area of space i was thinking of the information issue. to prevent paradoxes the information about your actions in the past cannot like reach your departure area before your departure (travel 10yrs back cannot happen within 10 light yrs radius from the point of origin. information travells at c.)
sorta..

let's assume now that the paradoxes are possible and the above restrictions don't exist. what happens then like? what are the paths of the world lines of things involved? how does the universe get rid of all the mess? (afaik nobody observed any time paradoxes yet, and didn't kill my grandpa when he was like 6 yrs old. or did i?).

SO! In the immortal words of master Yoda..."So certain are you?"..."tehehehehe"...."Much to learn you still have."

everybody has like..

[semper]

a nice example of linear, tunnel visioned, human thinking like. Who says the universe has to sort it all out LIKE? lol...anarchy can exist, just because it is nonsense and beyond our comprehention does not mean it is like that to everything or everyone, or in fact like.

and IF it was possible to send particles back like, then i was saying that you could do what I said like.

[Juliette]

I would like to argue that our very (linear) existence is timetravel.. albeit indeed in one direction only.

[buck]

Velcro was invented by the vulcans...if you watch star trek enterprise...

However, that aside.

Time travel...

The very idea of time travel terrifies me, doing anything could upset everything, however the problem with time travel, is, in my head, the idea that it creates a loop, which means the same thing always happens, which means if anything changed, noone would notice because that in there eyes is the way it always is, or even moreso, nothing would change if you caused changes because its already happened and those changes would always have been there so are infact not changes...Or something like that.

*Breath*

Alternative dimension + travel, now there is a funky subject.

Sliders anybody?

Ghosts? Are they an alternative dimension shifting too close to our own?

More likely than them actually being ghosts, Me thinks :p