reply to post by gimme_some_truth
Time travel has always been a bit confusing for me.. The idea of travelling faster than light to go back in time just seems, well... nonsense.
Let me try to explain...
If John says to Simon that he is going to go to a city and the only way he can get there legally is by driving for 2 hours at 30mph.. Simon thinks
it's the best option for safety and everything.
1 hour after John has left Simon realises that John has left something very important behind. Simon gets in his car and travels at 60mph for 1 hour
and arrives at exactly the same time as John. If Simon had traveld at 65mph then he would have got there before John arrived and could have played all
manner of mind games on John..
I can't see how travelling faster than light will make any difference. If you do travel faster than light what would you expect to happen?
I assume this would happen;
Firstly you would notice that as you were travelling at the exact spped of light you will see illuminated objects in front of you, you would see
blurred objects to either side of you but and lights behind you too.
If you go faster than light then you will still see lights in front of you, blurred images on either side but you would not see anything behind you
but darkness as that light has not caught up to your speed.
But here is the dilema. If you travel faster than light in any direction then you would have to travel beyond the length of time that light has
travelled to not be able to see any light behind you. The light you are speeding away from has already reached the points you are travelling to, so in
practice that light still exists and is constant. Therefore you would not be travelling in time. Only faster than light and only going to where light
has already been ... but if you travel long enough then you will reach a point where no light has yet reached and will leave you in total darkness.
You can't travel back 8 hours ago as you would literally have to rewind the universe to put Earth back into the correct position that you want to
travel to. Otherwsie you'll find yourself gulping vacuum
I feel we have to reconsider the whole idea of travelling in time using lightspeed. We get confused with the idea of time being something physical
that we could travel.
The moment you stop travelling faster than light is the moment that time, and light, catch up with you pretty damned fast.
Now, if you asked "How to travel into history or the future?" then that opens up a whole new concept.
The universe is literally nothing more than information, including time.
Let's have a look at this thread from a couple of weeks ago..
Radio Waves Travel Faster Than Light
Now that is a bit more like it.. This is where I feel we should be going.
The transmission of data to a particular moment seems far simpler than 'time' travel.
Time waits for no man, but the data of everything is everywhere.
This is where we get into the sci-fi of Star Trek and teleportation.
It would seem more logical to teleport a person (break the entire person down into particles, transmit them and re-assemble) to a particular frequency
in time, then we might get a bit closer to the ability to go forwards or backwards in universal events.
Time could very well be a frequency range a bit like radio rather than having any relation to light.
We can see light, but we can't see radio.
We can record a movie (light) onto a DVD and playback any time..multiple times but all we have really done is record data.. a burst of a frequency.
When we get down to paradox's, then we are talking something quite out of the ordinary. I feel these things happen all the time.. every second of
everyday.. even right now.. jusy by these words i am typing is causing a paradox. Our lives change with every single thing we do. But our lives are in
harmony with everything else. There is no determining factor that could cause a paradox. Going back to kill Hitler would not change anything for us,
but it would make an alternative history for another frequency range..
ie. an alternative dimnesion.
I could say something right now.. but then i might not.. that alone is a paradox and has just changed the entire outcome of this sentence, or this
thread.. But i have continued so life goes on.. nothing changes for you until you read this. Once you have read this then your reality has changed.
You've just taken a step into another possibility.
It's a bit like closing a door... does the world still exist outside the door. It's not until you open the door and step out that you are able to
see any changes.. these changes you now see are another reality.. data that has been changed..
I can here everyones brains ticking along to the story of the movie 'The Matrix' right now