Go Back   PC Gamer Forums > Off topic

    Reply
     
    Thread Tools Display Modes
      #1   Report Post  
    Old 11-17-2012, 05:01 PM
    Scaramoosh Scaramoosh is offline
    Senior Member
     
    Join Date: Jul 2010
    Posts: 1,178
    Default What I don't get about time travel...

    I can understand that you can travel into the future because the events haven't happened yet, you're taking your body and putting it into the future. Even if it is gravity or speed based your personal time is slower than the place you want to be which time is going faster so you end up being essentially in the future. However your body clock as you might put it will always be progressing forwards so you cannot travel endlessly into the future, only has far as you can age before dying.

    However going into the past makes no sense to me because the events have already happened. For me the whole Universe is at the same time like if I was able to instantly warp to somewhere in the Universe and back and keep doing it several times, I'd be at the same time for different locations. What is happening in each location is happening now, so what is happening on the other side of the Universe is happening at the same time as what is happening on our Planet. We see light from the past because how long it takes to travel but if you could go faster than the speed of light you only get there faster, you don't get there in the past. Like if you flew from that location to our planet faster than the speed of light, you'd get to this Planet to see the light traveling.

    For me what happened has happened, you cannot ever change that or go back. It's like what I don't get about Wormholes is they talk about taking a shortcut, like the worm instead of traveling around goes through the Apple. However we're already in the Apple, we don't have to go around anything, surely all a Wormhole is doing is taking the most direct route like light does.

    I can understand how time isn't linear and how different forces have an impact on time. However you can never visit a location and go to it's past surely.It would be like visiting a Star because it goes Supernova or whatever....you cannot visit that event before it has happened if it has happened already. Surely time is personal to you so you can slow or make it quicker but you cannot reverse it.
    Reply With Quote
      #2   Report Post  
    Old 11-17-2012, 05:08 PM
    jon_hill987 jon_hill987 is offline
    Senior Member
     
    Join Date: Jun 2010
    Posts: 3,873
    Default

    Time travel would follow Terminator rules. That is, it's one way only and you can't go back. This is in contrast, say, to Back To The Future rules, where back and forth is possible, and of course, Timerider rules, which are just plain silly.
    Reply With Quote
      #3   Report Post  
    Old 11-17-2012, 05:47 PM
    Belimawr Belimawr is offline
    Senior Member
     
    Join Date: Jun 2010
    Posts: 14,203
    Default

    the back to the future rules followed the multiple universes rule (something a lot of scientists believe in) so if you time travel and change the past you split off into a universe where that choice was made, it basically defines that every choice ever made causes a separate time line and there will always be a time line where the opposite option has take place.

    but the biggest problem with time travel is our understanding of physics doesn't allow for it, there is no point in out physics where effect can come before cause, this is why they are looking at theories such as quantum physics as at that level things can pop in and out of existence without a cause so the effect comes without a cause the same is thought to be true with the big bag as they assume time never existed before it so you can't have a cause only an effect.



    either way time travel if it was possible your most likely option is the multiple universes theory so we never see time travellers as in our time line that event always happened in that way, or you have the whole fate thing and everything that has happened will always happen so if you do time travel in the past you have already been there and done what ever it is you do when you time travel so time follows on as normal as that event always happens and is another reason we never see time travellers.

    but really unless you are going to look into the more advanced sections of physics there is no way to truly understand time travel as basic physics just can't support it in any form other than travelling forward as the effect always has to follow the cause.
    Reply With Quote
      #4   Report Post  
    Old 11-17-2012, 10:13 PM
    TheXand TheXand is offline
    Banned
     
    Join Date: Nov 2010
    Location: Aberdeen, Scotland
    Posts: 2,764
    Default

    I think I'd agree with Scaramoosh and the multiple universes theory.

    Failing that, if time is flexible enough to allow people to travel back into it, it's probably flexible enough to survive whatever those timetravelling scallywags do when they travel.

    Another thing is that time travel, if it ever does become possible, will likely only be able to travel back to the point that it was first created.
    Reply With Quote
      #5   Report Post  
    Old 11-17-2012, 10:17 PM
    JackRabbit JackRabbit is online now
    Senior Member
     
    Join Date: Jun 2010
    Posts: 3,306
    Default

    If you really want to give yourself a headache, what if the big bang was an explosion sent back through time!
    Reply With Quote
      #6   Report Post  
    Old 11-17-2012, 10:19 PM
    TheXand TheXand is offline
    Banned
     
    Join Date: Nov 2010
    Location: Aberdeen, Scotland
    Posts: 2,764
    Default

    Quote:
    Originally Posted by JackRabbit View Post
    If you really want to give yourself a headache, what if the big bang was an explosion sent back through time!
    You know that's actually my main thought on how Mega Universe One all kicked off. Either sentient species went back in time and nuked ourselves into existence, or the universe has always existed.
    Reply With Quote
      #7   Report Post  
    Old 11-17-2012, 10:29 PM
    Belimawr Belimawr is offline
    Senior Member
     
    Join Date: Jun 2010
    Posts: 14,203
    Default

    Quote:
    Originally Posted by TheXand View Post
    You know that's actually my main thought on how Mega Universe One all kicked off. Either sentient species went back in time and nuked ourselves into existence, or the universe has always existed.
    it was stewie did you never see when him and brian got stuck outside time and made a big bang creating the universe to get back?



    but really the explosion sent back to start the universe would more fall into the fate belief, as it falls into anyone who time travels was meant to time travel and meant to be there at that point making future events play out the way they do, meaning time travel may be real but you could never change anything as you are meant to do what you do while you are there. it's why the multiple universe theory works as it takes care of any paradox that may pop up as the universe you are in is not the one you came from so you may kill your parents but your universe still exists so you would as well.
    Reply With Quote
      #8   Report Post  
    Old 11-17-2012, 10:34 PM
    JackRabbit JackRabbit is online now
    Senior Member
     
    Join Date: Jun 2010
    Posts: 3,306
    Default

    Quote:
    Originally Posted by Belimawr View Post
    it was stewie did you never see when him and brian got stuck outside time and made a big bang creating the universe to get back?



    but really the explosion sent back to start the universe would more fall into the fate belief, as it falls into anyone who time travels was meant to time travel and meant to be there at that point making future events play out the way they do, meaning time travel may be real but you could never change anything as you are meant to do what you do while you are there. it's why the multiple universe theory works as it takes care of any paradox that may pop up as the universe you are in is not the one you came from so you may kill your parents but your universe still exists so you would as well.
    Unless you take the view that because your parents have never been killed, no-one will ever go back and kill them.
    Reply With Quote
      #9   Report Post  
    Old 11-17-2012, 10:46 PM
    Belimawr Belimawr is offline
    Senior Member
     
    Join Date: Jun 2010
    Posts: 14,203
    Default

    Quote:
    Originally Posted by JackRabbit View Post
    Unless you take the view that because your parents have never been killed, no-one will ever go back and kill them.
    that's where the multiple universe theory has you covered, the other universe still exists so you grow up with your parents you reach a certain age find a time machine go back in time kill your parents before your born then you are in the universe where you killed your parents and you were never born, so there is no paradox as the other universe where you did get born and feel the need to go back and kill your parents is still there, just you will never go back to it as you split of as a new universe the second you kill your parents, so you can then only travel forwards in that time line where you never happened.

    then if you start messing round with going back to stop your self you start having even more splits and could end up further away from your original line, basically multiple universe theory says there is a universe made for every choice ever made resulting in a infinite number of universes some could differ by one or 2 choices others could be the total opposite, but really until it can be proven it's just another theory.
    Reply With Quote
      #10   Report Post  
    Old 11-17-2012, 10:51 PM
    JackRabbit JackRabbit is online now
    Senior Member
     
    Join Date: Jun 2010
    Posts: 3,306
    Default

    Quote:
    Originally Posted by Belimawr View Post
    that's where the multiple universe theory has you covered, the other universe still exists so you grow up with your parents you reach a certain age find a time machine go back in time kill your parents before your born then you are in the universe where you killed your parents and you were never born, so there is no paradox as the other universe where you did get born and feel the need to go back and kill your parents is still there, just you will never go back to it as you split of as a new universe the second you kill your parents, so you can then only travel forwards in that time line where you never happened.

    then if you start messing round with going back to stop your self you start having even more splits and could end up further away from your original line, basically multiple universe theory says there is a universe made for every choice ever made resulting in a infinite number of universes some could differ by one or 2 choices others could be the total opposite, but really until it can be proven it's just another theory.
    Which would mean that there is a universe where an interdimensional omnipotent being is created.
    Congratulations, you have just proved god!
    Reply With Quote
    Reply

    Thread Tools
    Display Modes

    Posting Rules
    You may not post new threads
    You may not post replies
    You may not post attachments
    You may not edit your posts

    BB code is On
    Smilies are On
    [IMG] code is On
    HTML code is Off

    Forum Jump