Time is simply a measurment. Atomic clocks measure changes in electrons to give accurate time, but It's still just a measurment we use. Let's say we measured time by 'me going to sleep and waking up=12 hours'. So if I sleep EXTRA long one night did I just delay time? If you really could go back in time by exceeding light speed wouldn't you Immediately go back a microsecond to when you were under lightspeed? It's like pushing a ball uphill, Sure it went up but it always comes back.
Time travel will never be possible.
- Thread starter BaronXS
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Actually the grandfather paradox isn't so much of a paradox as people think become of one simple factor: Isolated Time bubbles.LilGherkin said:
My theory on this is thus - If you travel back into the past you become 'detached' from the existing time line and are now existing as an element outside of it. In short, you now exist in your own bubble of time that will remain unchanged no matter what happens to the original time line. Any changes you make at that point are more in kin to creating a parallel universes then altering the original time line you came from.
AE: You go back in time and kill your grandfather. Now when you return to the present time your whole family line from that point on hasn't existed and all the little shifts and changes that would cause has taken place. You still exist though, as you where not and still likely are not part of this time line, but every one else has changed. Don't expect them to pay back the money they owe you either, at this point.
This opens up a second possible theory:
What if it isn't possible for a person to interact with a time line once they are detached from it? That is when your no longer in sync with time you no longer are able to manipulate it or change it. It could still be possible to go back through time, but all you can do is observe at that point as you don't even exist as a physical element.
Now if you can't return to the point you left from, and say re-sync, it could be very possible that you remain forever trapped in this incorporeal state. I must wonder how many time travel experiments have 'failed' because of this, with the test subjects never returning even though they where successfully sent through time....
Did anyone ever read Douglas Adams? Or watch any one of a billion Dr. Who episodes? Regardless of what media they are, their points are solid-- time fits together like a jigsaw puzzle; whatever happened happened because of the intervention/nonintervention of a hypothetical time traveller. If event X happens at time Y, it's because time traveller Z did Action AA in order to prevent travesty BB; by that logic, Hitler was actually an improvement, to give a random example.
...did I make that clear?
...did I make that clear?
Won't be possible to change the past. Maybe time travel to the future, though.
The reason why it will not be possible to change the past is because of one very good reason: The past affected who YOU were.
To use a very tired old example, let's say you want to kill Hitler (hey I'm with you on that one. Bastard deserved to die, if anyone ever does). But you won't. Because if you kill Hitler, you never grew up learning about who Hitler was or how bad a guy he was. So you'd never go back in time to kill him.
Changing the past will obliterate anyone's need to go back into the past to change it. Thus, no one will. Plus, with the tricky nature of time travel, you also might end up "not existing" as a result (for example, say you didn't kill hitler, so someone's grandmother didn't have to marry someone else after uncle joe got shot up on Omaha, because WW2 never happened, so your father's friend never got born, the one who introduced your mother to your father, and as a result, YOU were never born - you see how tricky this can be?)
Now, some have said that if you time travelled to the past, you would just travel to another universe which RESEMBLED the past, and so no paradoxes would arise because you wouldn't be really altering your past. But that would then just be pointless and I have difficulty believing that you could travel to another universe.
But even if time travel was possible, you couldn't change the past - because the past would just be the result of all the time travellers messing with it: in other words, the past we have now, is the end result of all that tinkering by millions of time travellers. So maybe WW2 happened BECAUSE of a time traveller, for example.
The reason why it will not be possible to change the past is because of one very good reason: The past affected who YOU were.
To use a very tired old example, let's say you want to kill Hitler (hey I'm with you on that one. Bastard deserved to die, if anyone ever does). But you won't. Because if you kill Hitler, you never grew up learning about who Hitler was or how bad a guy he was. So you'd never go back in time to kill him.
Changing the past will obliterate anyone's need to go back into the past to change it. Thus, no one will. Plus, with the tricky nature of time travel, you also might end up "not existing" as a result (for example, say you didn't kill hitler, so someone's grandmother didn't have to marry someone else after uncle joe got shot up on Omaha, because WW2 never happened, so your father's friend never got born, the one who introduced your mother to your father, and as a result, YOU were never born - you see how tricky this can be?)
Now, some have said that if you time travelled to the past, you would just travel to another universe which RESEMBLED the past, and so no paradoxes would arise because you wouldn't be really altering your past. But that would then just be pointless and I have difficulty believing that you could travel to another universe.
But even if time travel was possible, you couldn't change the past - because the past would just be the result of all the time travellers messing with it: in other words, the past we have now, is the end result of all that tinkering by millions of time travellers. So maybe WW2 happened BECAUSE of a time traveller, for example.
Saying something is never going to be possible is supremely arrogant to say the least. Scientifically speaking we hardly know the real rules behind the time and space continuum. Who really knows what kind of scientific discoveries human will make in the next thousand years? I imagine it will be more awesome that our imaginations can cook up and would most likely blow our minds. So don;t ever say something is never going to be possible. It just might come true.
Technically, the only drive for a time machine is to fix a mistake in the past. So if in 100 years the government funded a project to make a time machine to fix a major problem, well, the very act of using it to fix the problem would elminate the necessity of it in the first place. So for all we know, the time machine will be reinvented thousands of times.
No, that was a movie, actually. See? [http://en.wikipedia.org/wiki/Primer_(film)]Evil Jak said:Isnt a guy making a time machine that can take you to any time between the present and the time that the machine was switched on? And if you switch it off and then on again, it would be reset.
I heard the guy talking about it a couple fo years ago, it was interesting.
Most of you are referring to time as a track that is traveled on.
Our concept of time is linear (past, present, future). It is that way, because we can't perceive it any other way.
When you think about it, we really only have a past because we remember it. The past could really just be what we remember.
Our concept of time is linear (past, present, future). It is that way, because we can't perceive it any other way.
When you think about it, we really only have a past because we remember it. The past could really just be what we remember.
There are two ways to get around this:
A) Use the 'Backt to the Future' method of creating an alternate reality.
B) Time machines will have limitations preventing them to go back past a certain date.
A) Use the 'Backt to the Future' method of creating an alternate reality.
B) Time machines will have limitations preventing them to go back past a certain date.
Its not always true because with a time machine anyone could interfere with time at any point, its just that our reality could change instantly and we would never know for the better, we would just assume thats what always happened whereas it might not have been so.SultanP said:
You realise that time travel doesnt have to follow your linear view of time you have their, it could quite easily follow the back to the future version of timetravel where changing things in the past creates a new future, this gets rid of paradoxs completely.BaronXS said:
I should point out that you shouldnt follow the back to the future version any more than that because it then decides to vanish the main character if he screws up the past too much. But asking for consistancy in a film is far too much.