[QUOTE=green bandit;32465944]As long as there is a way, in which I cannot be seen, nor people can physically touch me. I'd love to see some historic events. Or even minor ones, like how my parents looked/acted when they were young. Or watching my younger self in elementary or something[/QUOTE]
Reading my old posts on facepunch make me feel physical pain
I don't even want to imagine what would happen if I would watch at myself from the past
I like the multiverse theory, if you went back in time you would just create an alternate reality where you time travelled and thus not ruin your own timeline.
Think of reality like a tree, if you went back in time you would create a new branch (or twig)
Time travel isn't so much good or bad as it is useless.
Let's say you go back in time to change something (warn yourself about something, assassinate Hitler, etc.). You successfully did whatever you went back in time to do.
Now you have a problem. You know that thing you went back in time to fix? Yeah, you fixed. It never happened. Meaning you never went back in time to fix it, so nothing stopped it from happening, so it actually happened, so you went back in time to fix it, so it never happened, and so on and so forth.
Changing things that happened in the past via time travel would be VERY hard if not impossible outright.
People Going back in time to save Some of the Assassinated Presidents and martin Luther king
Im in
I realize this is a silly comic, but I really think this is the most plausible way time travel would work.
[t]http://drmcninja.com/comics/2011-05-30-21p38.jpg[/t]
No because the reason that the titanic sunk was because all of the timetravelling refugees that were attempting to stop the ship from sinking caused it to be weighed down thus causing its sinking. :v:
Bad if you can go back in time.
Imagine, in the future, there is a almost unpreventable disaster e.g. an asteroid strike or whatever.
These people will use the time machine to travel back in time to when food and money and shit was plentiful.
Then, when this civilization gets to t he time of the asteroid strike, they will go back in time too, thus doubly inflating the population.
This will continue infinitely, and destroy the earth unless time travel is can only be achieved by the very very very very far-seeing rich powerful few
Assuming it's possible, I think it would be too powerful to trust any one group of people with, there'd have to be some serious steps in place to prevent it's misuse.[QUOTE=Gekkosan;32462916]Yeah I bet they did.
Also, result of moving at all? But we do go forwards in time all the time. So I don't see why anyone would want to fuck with that.[/QUOTE]He didn't explain that very well, what he's talking about is motion through spacetime, you observe everything in spacetime to be "moving" at c (that's the speed of light, which is ~300,000m/s), if you're seeing something that's not moving through space, then it's spending all of it's "momentum" travelling through time.
The faster something moves through space, the slower it moves through time, and time doesn't pass at all for things travelling at the speed of light (but that's impossible for anything with mass, I'm not entirely sure why, ask JohnnyMo1 or someone like that.).
[QUOTE=Gustafa;32457439]One man with access to the ability to travel through time could potentially be the biggest threat to this world. If you are freely able to travel through time, you can evade all laws and all consequences for your actions, if such technology were to fall into the wrong hands the consequences could be terrifying[/QUOTE] I don't think you understand how time travel works. If he went back in time and started messing with things that would be a whole other universe he would be messing with and it wouldn't effect us.
[QUOTE=thrawn2787;32457489]If I could go back in time in some sort of bubble where I could witness events but have literally no impact on them I'd like that. I'd go back and watch tons of stuff. But yeah otherwise there's too many bad things that can happen with backwards time travel thanks to human nature[/QUOTE]
Wasn't that the plot to some book or movie? Not the Michael Crichton one, it was somebody else.
[QUOTE=ksenior;32467268]I like the multiverse theory, if you went back in time you would just create an alternate reality where you time travelled and thus not ruin your own timeline.
Think of reality like a tree, if you went back in time you would create a new branch (or twig)[/QUOTE]
Exactly, I agree with this.
If multiverse theory is correct, then whatever you do in the past matters completely and not at all. If you create a paradox, the universe that is involved would most likely collapse, but it doesn't really matter because an infinite number of universes will rise to take it's place.
Say you do go back and kill Hitler, you have removed Hitler from that universe and collapse all of the branches of it that contain Hitler after his date of death, although for each different universe you destroy more will rise up to take their places, without Hitler, although there will still be an infinite number of universes with Hitler and an infinite number without him. It's the same thing if you go back and kill your grandfather before your dad is born, you'll just be removing yourself from that one timeline though there will still be infinite universes with you in them. There's really nothing you can do in the past that will fuck up everything, because everything has already been fucked up in one place or another. No matter what you do, it will always be in balance.
[editline]25th September 2011[/editline]
[QUOTE=E-102 Gamma;32467818]Time travel isn't so much good or bad as it is useless.
Let's say you go back in time to change something (warn yourself about something, assassinate Hitler, etc.). You successfully did whatever you went back in time to do.
Now you have a problem. You know that thing you went back in time to fix? Yeah, you fixed. It never happened. Meaning you never went back in time to fix it, so nothing stopped it from happening, so it actually happened, so you went back in time to fix it, so it never happened, and so on and so forth.
Changing things that happened in the past via time travel would be VERY hard if not impossible outright.[/QUOTE]
In this scenario, you'd destroy whatever universes that have branched off from the very moment that the paradox is created, and two new realities would be created: in one, you did go back and change whatever you changed, and in the other, you never did.
[editline]25th September 2011[/editline]
Also I wish I could find the paper that I'm using to get this information. I can't remember who published it for the life of me.
Worst idea ever.
Unless it doesn't actually alter time, just lets the user 'ghost' through time and see what REALLY happened, but I'd rather we used that for really only reasons about HISTORY.
[QUOTE=J!NX;32477357]Worst idea ever.
Unless it doesn't actually alter time, just lets the user 'ghost' through time and see what REALLY happened, but I'd rather we used that for really only reasons about HISTORY.[/QUOTE]A device like that would let you spy on anyone undetected though, since half a second ago is still the past.
I'm not sure why you guys keep discussing time travel like everyone knows what happens when something travels through time, nobody does, because it's impossible and can't happen.
[QUOTE=Nerts;32477446]A device like that would let you spy on anyone undetected though, since half a second ago is still the past.[/QUOTE]
that is true, it'd be highly easily to abuse, but to figure out what happened in the past without any harm to you would be HUGE and the discoveries would be very important.
Anything relating to going into the past really is a bad idea IMHO.
Until someone does it, there's no point in saying what you "believe". It's as useful as a plumber saying "I believe if you stick a lung on his ass, a new mouth will grow and he'll live." You need a Doctor for that.
What we need is an experienced time travelling physicist.
This idea of time travel creating separate time lines just doesn't make any sense to me. It seems so arbitrary.
As you read the following, keep in mind that this is my [U]OPINION[/U]. I disagree with those who believe in alternate time lines, but I am not saying they're wrong, as I have no evidence to back up such a claim.
I see time as a single, progressive bar. If you were to go back in time, you jump back to a point on this bar and time would start rewriting itself from there. Everything that happened before you time warped is still there, but it will be overwritten by this "new" timeline.
If, however, you were to do something that would ultimately cause yourself either to never be born, to be killed before taking a trip into the past, or to just not travel in time, your time-traveling self would instantly vanish, because your past "present" self would never have traveled back in time, meaning you never would have inadvertently caused yourself not to travel through time, meaning you would go back in time, and so on and so forth, creating an endless loop in time.
Let's say we could watch the present as someone goes to the past and changes stuff (assuming the changes actually "stick"; there being no endless loop in time). We would see the results of any changes made by the time traveler appear instantly. Anyone living in the present wouldn't have any recollection of the "previous current time" because, from their point of view, it never existed. Nobody would notice anything change.
Time travelling is just so complicated. [img]http://www.facepunch.com//fp/emoot/psyduck.gif[/img]
[editline]25th September 2011[/editline]
For the record, I personally don't believe time travel will ever be possible.
[QUOTE=Sh33p;32477450]I'm not sure why you guys keep discussing time travel like everyone knows what happens when something travels through time, nobody does, because it's impossible and can't happen.[/QUOTE]
We're not discussing the actual implications, we're discussing theoretical implications.
If a couple were to have sex with the intention of bearing a child, even a difference of 5 minutes would completely change which sperm unites with the egg, resulting in a different person created, or if a sperm unites at all, leaving the couple to try again another time, again creating a completely different person than they would have had. Something as quick & simple as a 5 minute change.
Time travel which allows interaction would alter our world colossally, deleting many from existence altogether. As such, I don't think doing so would be ethical.
I don't see the point in 'fixing' the past anyway. The new universe created would simply develop new problems, different from the original's but still problems. It's a helpless & endless battle.
[QUOTE=BlueChihuahua;32479115]If a couple were to have sex with the intention of bearing a child, even a difference of 5 minutes would completely change which sperm unites with the egg, resulting in a different person created, or if a sperm unites at all, leaving the couple to try again another time, again creating a completely different person than they would have had. Something as quick & simple as a 5 minute change.
Time travel which allows interaction would alter our world colossally, deleting many from existence altogether. As such, I don't think doing so would be ethical.
I don't see the point in 'fixing' the past anyway. The new universe created would simply develop new problems, different from the original's but still problems. It's a helpless & endless battle.[/QUOTE]
I know FP is smart enough to understand the fact that people can have many immoral intentions with time travel as well. So this post, on top of that, makes it seem useless.
even being in a spot for mere seconds can change history. Simply someone seeing someone else in another room, he could decide to or not to go into the room, and what if he was meant to not to / or go into the room and something happened that changed history? or even dropping so much as a pencil could change time. hell, pick an apple, next thing you know Newton never thought of gravity and a ton of history changes.
Very tiny variables seem silly, but theres the chance of forever changing history because of one small mistake.
I really like the idea of time travel that was displayed in the movie "Primer"
[t]http://upload.wikimedia.org/wikipedia/commons/thumb/8/84/Time_Travel_Method-2.svg/650px-Time_Travel_Method-2.svg.png[/t]
Though I also like the idea of multiple timelines, this one seems a bit more "realistic", I guess.
Time travel will never really sound realistic at all, though.
guys if I traveled back in time to help myself with homework so I can get a good grade but if I do that there will be no need to travel back intime but then I dont get a good game so ~~[i]timeloop[/i]~~
If you went back in time, it would probably end like Back to the Future where you fucked up one small, insignificant detail and suddenly your old family doesn't exist anymore and is replaced by extremely happy people who look just like them.
I tend to udnerstand it in a way that atleast in this universe, noone has ever travelled back in time, since noone has done it in the past... Ish... What i mean, is that if someone were to travel back in time in this universe making consequenses on us, we would notice now, since if someone in the future travels back, he would pop up here, making us notice. Unless you can not interact or be seen by us in the now, time travel will never be invented in a way that makes you go back in this timeline. This is unless somehow the time machine cant go back to now, and then people will not start showing up untill later, but i cant see this happen. If someone makes a time machine that allows people to go back and influence things in the past on this timeline, someone would definatly go back to WW2 and kill hitler or something, because they dont think of the consequences.
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