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Old 09-25-2012, 10:29 AM   #16
FergieTCat
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My parents used to debate this all the time. Neither one of them are physicists, but both of them loved that kind of stuff.

My father said it was impossible. No reason why, but that was my dad.

My mother says time travel isn't possible because we can't travel faster than the speed of light. She also points out that if we could travel faster than the speed of light, we'd be able to watch our image arrive after we do.

I think the next question is: if time travel were possible, would it be possible to alter the course of history? There was a Twilight Zone episode about a man who unsuccessfully tries to stop Lincoln's assasination. Can you change history, or would people just think you were crazy like one of those "lunatics" who wander around with foil hats. Maybe they know something we don't (??)

Personally, I would have tried to prevent people from entering the World Trade Center on 9/11.
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Old 09-25-2012, 10:35 AM   #17
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Quote:
Originally Posted by FergieTCat View Post
My parents used to debate this all the time. Neither one of them are physicists, but both of them loved that kind of stuff.

My father said it was impossible. No reason why, but that was my dad.

My mother says time travel isn't possible because we can't travel faster than the speed of light. She also points out that if we could travel faster than the speed of light, we'd be able to watch our image arrive after we do.

I think the next question is: if time travel were possible, would it be possible to alter the course of history? There was a Twilight Zone episode about a man who unsuccessfully tries to stop Lincoln's assasination. Can you change history, or would people just think you were crazy like one of those "lunatics" who wander around with foil hats. Maybe they know something we don't (??)

Personally, I would have tried to prevent people from entering the World Trade Center on 9/11.
Actually, there are some variants of quantum gravity that are believed to allow travel that is faster than the speed of light. That could make things interesting...
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Old 09-25-2012, 10:38 AM   #18
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Quote:
Originally Posted by FergieTCat View Post
My parents used to debate this all the time. Neither one of them are physicists, but both of them loved that kind of stuff.

My father said it was impossible. No reason why, but that was my dad.

My mother says time travel isn't possible because we can't travel faster than the speed of light. She also points out that if we could travel faster than the speed of light, we'd be able to watch our image arrive after we do.

I think the next question is: if time travel were possible, would it be possible to alter the course of history? There was a Twilight Zone episode about a man who unsuccessfully tries to stop Lincoln's assasination. Can you change history, or would people just think you were crazy like one of those "lunatics" who wander around with foil hats. Maybe they know something we don't (??)

Personally, I would have tried to prevent people from entering the World Trade Center on 9/11.
You should watch the movie "The Butterfly Effect". It's got Ashton Kutcher in it and he figures out he can travel back in time. He decides to try to help this friend of his but every time he tries to change anything at all the future ends up even worse. It gets you thinking about the concept. If you tried to keep people from going in to the building would it even work? Or would you end up getting arrested or maybe even have people think you were responsible in some way for what happened?
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Old 09-25-2012, 10:39 AM   #19
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Actually, there are some variants of quantum gravity that are believed to allow travel that is faster than the speed of light. That could make things interesting...
If I told my mother that, she'd make me explain it! Which would be even more impossible than either time travel or breaking the light barrier!

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You should watch the movie "The Butterfly Effect". It's got Ashton Kutcher in it and he figures out he can travel back in time. He decides to try to help this friend of his but every time he tries to change anything at all the future ends up even worse. It gets you thinking about the concept. If you tried to keep people from going in to the building would it even work? Or would you end up getting arrested or maybe even have people think you were responsible in some way for what happened?
That's exactly what happened in The Twilight Zone.
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Old 09-25-2012, 10:40 AM   #20
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If I told my mother that, she'd make me explain it! Which would be even more impossible than either time travel or breaking the light barrier!
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Old 09-25-2012, 10:41 AM   #21
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I hope so, if there really is a bacon shortage I want to be able to go back in time before it, and stock up!
You could just go back multiple times and keep buying the SAME bacon. (Just like in the book)

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Time travel to the future is possible as Einstein showed.

I do not believe time travel to the past is possible because of the grandfather paradox. Unless you include the plausibility of the multiverse theory, then yes, time travel to the past would be possible.
We are already traveling forward in time.

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Time travel can only be possible to the future. Think about it. If it were possible to go back in time, we would know about it because someone would have come back in time and told us!
Would YOU believe it if someone told you they were from the future?
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Old 09-25-2012, 10:41 AM   #22
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See the problem with that theory is you are assuming in the future we won't know that going around and telling everyone we're from the future isn't going to mess up the past and result in messing up the future. What if time travellers are actually smart enough to dress in clothes from the period they're visiting an keep their mouths shut and just observe? You'd have to be very careful not to actually do anything because you have no idea what the butterfly effect would be. For all we know there may have already been time travellers. We just didn't recognize them as being from the future because they blended in.
Did you read or watch The Time Traveler's Wife? He always ended up naked when he time traveled.
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Old 09-25-2012, 10:44 AM   #23
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Originally Posted by lizabu View Post
You should watch the movie "The Butterfly Effect". It's got Ashton Kutcher in it and he figures out he can travel back in time. He decides to try to help this friend of his but every time he tries to change anything at all the future ends up even worse. It gets you thinking about the concept. If you tried to keep people from going in to the building would it even work? Or would you end up getting arrested or maybe even have people think you were responsible in some way for what happened?
I loved that movie. The Butterfly Effect (the theory itself, not the movie), is a common topic of discussion in our house. Whenever we are getting ready to go somewhere and one of the girls has to run back into the house for something she forgot, thus delaying our departure, I tell her that she's just changed the course of history.
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Are two-year-olds too young to go to Disney? It depends upon their temperament. One way to find out: take them there. After all, they're only young for a short time. You're sure to enjoy your trip if you plan ahead! AND - don't forget those all-important dining reservations; they fill up so fast it's ridiculous. Have I forgotten anything? Oh yes - I'd advise you to carry a small purse or bag for loose items so you don't lose them on rides. You'll have a great vacation if you follow my advice!
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Old 09-25-2012, 10:46 AM   #24
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Did you read or watch The Time Traveler's Wife? He always ended up naked when he time traveled.
Yes. That kind of made sense if just "you" were time travelling. If you had a time travelling machine you should be able to bring clothes (or bacon) with you.

You know what really got me mad about that movie? Why if he knew the time and place he was going to end up did he not have an Ambulance there waiting for him? I was like screaming at the TV.
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Old 09-25-2012, 01:27 PM   #25
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I'm just about to finish reading 11/22/63 by Stephen King and since the possibility of time travel fascinates me, the subject has been on my mind lately. I tend to be very open-minded about such things.

Do I believe in ghosts? Maybe. Reincarnation? I think it's likely. ESP/Telepathy? Most definitely. Time Travel? Welll.....while I find the idea intriguing I have to say I think it's highly unlikely. It results in too many paradoxes that my overly analytical mind simply cannot accept. I think the best (and maybe only) explanation that would allow for the possibility would be the parallel universe theory and I just have a hard time buying it. My general view on such things is that the universe is a huge mystery and there is so much more out there than what we can see, touch, and intuitively know. Yet, sadly, I think time is exactly what it appears to be.

One caveat though: I do believe there might be something to time slip phenomena. What it is exactly or how it happens I have no idea, but I do believe people may actually have experienced this. Time slips fascinate me almost as much as the idea of time travel.

Stephen King addressed the issue in another book. Time travel to the past beyond the very recent past isn't possible because the Langoliers eat it up.
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Old 09-25-2012, 01:36 PM   #26
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Time travel can only be possible to the future. Think about it. If it were possible to go back in time, we would know about it because someone would have come back in time and told us!
I'm from the year 3235. The Y2k bug was really a Y3k bug. Who knew? All pro sports are played by robots now. But the replacement robot refs aren't all that good in football. Ah the more things change, the more they stay the same. Oh and the Cubs still haven't won a world Series since 1908. Lastly, when you're changing your light fixtures, make sure you turn the breaker panel off.
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Old 09-25-2012, 04:14 PM   #27
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Old 09-25-2012, 04:22 PM   #28
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To have a little fun

If you are traveling in a vehicle at the speed of light and you turn the headlights on will they do anything?
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Old 09-25-2012, 04:34 PM   #29
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To have a little fun

If you are traveling in a vehicle at the speed of light and you turn the headlights on will they do anything?
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Old 09-25-2012, 06:22 PM   #30
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I do believe that if time travel (to the past) was possible, we WOULD know it because it would have been done. I know that's already been mentioned, but seriously, how would be not know?

Disasters would have been averted, Hitler would have been killed at birth, etc., etc.

My mind is open to all KINDS of things, but time travel isn't one of them.

But I do believe in possible multiple dimensions, but that wouldn't be time travel (technically)...

ETA... I loved that book! Best King novel in many years. And the best ending he's EVER written (and he credits his son for it... not surprised!).

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