Time travel.. if its possible why havent we seen it.

[shoes]

Maybe no-one from the future has visited our time because mankind did not survive long enough for anyone to perfect time travel.

Or perhaps they just didn't come back to 'now'?

Perhaps they had no way of going back so they could only travel back as far as the invention of time travel, unless they felt like a one way ticket.

Perhaps Nicolas Cage isn't a vampire after all

 

[[FnG]magnolia]

It's 8.13pm, Friday 23rd September 2011.

I DID IT, THE MACHINE WORKED, WORKED I TELL YOU!

 

[ChrisJSY]

Because the machine only goes as far back as from when it was made! duh! (and it hasn't been made yet)

 

[mrk]

That Multiverse theory is interesting regarding time travel, where everything you do splits off into a new universe infintaley.

The only problem is that this theory would mean that for every action every single thing on this Universe does or is subjected to will have a its own Universe and its own timeline. Can you imagine how messed up the Multiverse would be with Time?

It also means that if Time travel backwards in time was possible (let's just say it was for the sake of this topic) then whatever change you made back in the past would spawn a new alternate reality with those changes in a multiverse so if you returned back to your time you may not be returning back to "your" time because you've changed the order of time and the Universe has had to adjust itself to keep balance and order. The recent episode of Curiosity focuses on Time Travel and they explored what might happen if you met/touched yourself (hur).

It would also fall in line with Newton's law of motion where every action has an equal and opposite reaction, the Universe needs to balance itself at all times so will do this no matter what to keep natural order. A Star is born, another star has to go supernova etc.

That's^ from my understanding from reading various books, journals and watching docus over the years anyway

 

[StriderX]

IF indeed it is possible, then the species whom would be able to, would have rules regarding it and technology to stay out of reach (as it were).


Just because you cant see it with your senses, doesn't mean it cannot happen, it is incredibly unlikely, going by our current knowledge.

You can use logic all you like, it still requires knowledge which we simply dont possess, nor understanding.

 

[Tunney]

Ignoring the science, it could be that we discover how to wipe out all human life very efficiently before we discover how to time travel.

 

[Dr House]

People say that time travel isnt possible because if it
was how come people havent visited us from the future ( future us) to say its been possible etc.

I think the Prime Directive will not allow them to tell us

“ As the right of each sentient species to live in accordance with its normal cultural evolution is considered sacred, no Star Fleet personnel may interfere with the normal and healthy development of alien life and culture. Such interference includes introducing superior knowledge, strength, or technology to a world whose society is incapable of handling such advantages wisely. Star Fleet personnel may not violate this Prime Directive, even to save their lives and/or their ship, unless they are acting to right an earlier violation or an accidental contamination of said culture. This directive takes precedence over any and all other considerations, and carries with it the highest moral obligation.[4]

The Temporal Prime Directive is intended to prevent a time traveler (from the past or future) from interfering in the natural development of a timeline. The TPD was formally created by the 29th Century, and was enforced through an agency of Star Fleet called the Temporal Integrity Commission, which monitored and restricted deviations from the natural flow of history.[11] However, several Star Trek: Voyager episodes specifically make references to the Temporal Prime Directive that suggest that it applies in the 24th century.
The directive is regarded as "inviolable," and any Star Fleet officer responding to a question regarding their prior actions with words to the effect of "I cannot reply due to the Temporal Prime Directive" would not normally be subject to censure, as long as some form of temporal instability had been sensed, however slight the signs.
As 31st Century time traveler Daniels revealed to Captain Jonathan Archer in the Star Trek: Enterprise episode "Cold Front," as time travel technology became practical, the Temporal Accords were established sometime significantly prior to the 31st Century, in order to allow the use of time travel for the purposes of studying history, while prohibiting the use of it to alter history. Some factions rejected the Accords, leading to the Temporal Cold War that served as a recurring storyline during the first three seasons of that series.

 

[Participant]

Time travel is impossible simply because time is not an extra dimension, there is no past and future existing simultaneously, think of it like motion or the rate of change, you can 'travel' or rather wait for the future by freezing yourself, orbiting a blackhole or moving near the speed of light but that's not really time travel, you can never go backwards because there is nothing to go back to, only the present exists and time is actually more like like motion.

This post is closest to my feelings on time travel.

 

[mrk]

"Time Travel" is possible, but only into the future. You don't need near light speed either, just the faster you go the further you end up in the future, or the more massive the object you're orbiting at speed

 

[Raymond Lin]

We are all time traveling together. Right now.

 

[mrk]

Time also flies when you're having fun.

 

[Cosimo]

Time also flies when you're having fun.

Indeed it does.

 

[Participant]

You know how the first second always looks slower when you first look at a clock...that's time travel.

 

[Cosimo]

It's 8.13pm, Friday 23rd September 2011.

I DID IT, THE MACHINE WORKED, WORKED I TELL YOU!

I just went back in time and read your post.

 

[Davefran]

If we don't invent time travel before Dec 21st 2012, It'll never exist and neither will we

 

[Pottsey]

It must be impossible at all times, otherwise (assuming that we have a future so vast that it might as well be infinite) we would have proof in someone/something coming back to our time from that future.

Why? Why would someone traveling back in time be able to contact us? Think about it. If you travail just 1 hour back in time in the same spot you would end up in space as the Earth had moved 67,062 miles in that time frame. Traveling years back in time would put you solo systems away or further. Just because no one has visited us doesn’t mean time travel is impossible. It could just mean they travel back in time and cannot find earth as Earth has moved from so far away from their current location.

When it comes to time travel everyone seems to forget the Earth, solar systems and even the galaxy are not stationery. All 3 move in space. Travel in time and all 3 are no longer in the same spot.

EDIT: that galaxy moves at around 630 km per second. So think if you jumped 1 hour back in time your current spot in the galaxy would be 2,268,000km away from Earth. Now think about what happens if you jump 10 years back? How many 100’s of millions of KM away from Earth would you be? How would you find Earth?

 

[uvarvu]

Why? Why would someone traveling back in time be able to contact us? Think about it. If you travail just 1 hour back in time in the same spot you would end up in space as the Earth had moved 67,062 miles in that time frame. Traveling years back in time would put you solo systems away or further. Just because no one has visited us doesn’t mean time travel is impossible. It could just mean they travel back in time and cannot find earth as Earth has moved from so far away from their current location.

When it comes to time travel everyone seems to forget the Earth, solar systems and even the galaxy are not stationery. All 3 move in space. Travel in time and all 3 are no longer in the same spot.

There goes back to the future then LOL. I guess time travellers may account for this though and be able to set coordinates in all of the applicable dimensions to get themselves to where and when they want to be.

 

[Vonhelmet]

Why? Why would someone traveling back in time be able to contact us? Think about it. If you travail just 1 hour back in time in the same spot you would end up in space as the Earth had moved 67,062 miles in that time frame. Traveling years back in time would put you solo systems away or further. Just because no one has visited us doesn’t mean time travel is impossible. It could just mean they travel back in time and cannot find earth as Earth has moved from so far away from their current location.

When it comes to time travel everyone seems to forget the Earth, solar systems and even the galaxy are not stationery. All 3 move in space. Travel in time and all 3 are no longer in the same spot.

EDIT: that galaxy moves at around 630 km per second. So think if you jumped 1 hour back in time your current spot in the galaxy would be 2,268,000km away from Earth. Now think about what happens if you jump 10 years back? How many 100’s of millions of KM away from Earth would you be? How would you find Earth?

That's a fairly thin argument. The displacement could be compensated for in some way, and who's to say that time travel doesn't take account of the relative movement of the universe anyway? Hell, you could even say that surely we could end up with someone who started in goodness knows which galaxy, time travelled, and would up landing where earth is now.

 

[Domo]

There are infinite universes and therefore infinite histories. Therefore when time travel is discovered chances are in won't be this universe you end up in.

That's why we haven't met our future selves. It also defeats the grandfather paradox.

 

[Efour]

cos if humans have invented it they have also invented a way to not reveal themselves or we were too dumb to interpret who they were.