If time travel existed...

txrandom

Diamond Member
Aug 15, 2004
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Wouldn't someone from the future travel back to the past (our present)?

This disproves time travel, doesn't it?
 

Alienwho

Diamond Member
Apr 22, 2001
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And say what? I'M FROM THE FUTURE, YOU'RE ALL GOING TO DIE!!"

There are plenty of homeless nutjobs already preaching that. Are they from the future?
 

Dangerer

Golden Member
Mar 15, 2005
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maybe someone from the future traveled back to 2010 and ended the universe and mankind as we know it are headed towards oblivion?
 

So

Lifer
Jul 2, 2001
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What if the time machine can only go back as far as the day it was built?
 

ShadowOfMyself

Diamond Member
Jun 22, 2006
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Well, not exactly.. Remember we dont have time travelling devices yet, so if you travelled to the past you would be stuck there forever... Maybe they only travel back to the point where the first time machine was invented so they can go back to the future :p
 

txrandom

Diamond Member
Aug 15, 2004
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Originally posted by: ShadowOfMyself
Well, not exactly.. Remember we dont have time travelling devices yet, so if you travelled to the past you would be stuck there forever... Maybe they only travel back to the point where the first time machine was invented so they can go back to the future :p

What if the time traveler traveled to the past in a time machine that came with him. He should be able to go back to the future right?
 

DaShen

Lifer
Dec 1, 2000
10,710
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Originally posted by: ShadowOfMyself
Well, not exactly.. Remember we dont have time travelling devices yet, so if you travelled to the past you would be stuck there forever... Maybe they only travel back to the point where the first time machine was invented so they can go back to the future :p

This is one of the proposed theories out there.
 

mobobuff

Lifer
Apr 5, 2004
11,099
1
81
When I was younger (13 years old or so), this was always the theory the I used to disprove the discovery of time-travel at ANY POINT in the future. That we never see any time-travelers from year 3029 (or any point in the future).

Originally posted by: Alienwho
And say what? I'M FROM THE FUTURE, YOU'RE ALL GOING TO DIE!!"

There are plenty of homeless nutjobs already preaching that. Are they from the future?

But why don't they have flying cars and photon torpedos!?!?
 

ShadowOfMyself

Diamond Member
Jun 22, 2006
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Originally posted by: txrandom
Originally posted by: ShadowOfMyself
Well, not exactly.. Remember we dont have time travelling devices yet, so if you travelled to the past you would be stuck there forever... Maybe they only travel back to the point where the first time machine was invented so they can go back to the future :p

What if the time traveler traveled to the past in a time machine that came with him. He should be able to go back to the future right?

I really have no answer for that, maybe its only possible to teleport organic matter... I have no idea lol

Btw since we are on this topic Ill take the chance to ask another question... When you are in space travelling at high speeds time goes by slower, right? So... If we had a lightspeed spaceship, and travelled in it for one year, when we came back to earth, people would have age much faster, right? Well, thats technically time travelling into the future :confused: or am I missing something?
 

DarkThinker

Platinum Member
Mar 17, 2007
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As strange as I consider this to be, but I think the OP 's theory might have some merit!

Bare with me here, the point the OP is trying to raise is absolutely valid, and here is my reasoning:

1- If at some point humans achieve the capability to time travel then at some point in the future they will most probably time travel.

2- When humans achieve it is not an issue of importance , it doesn't matter if it's done the year 2600 3000 or 3500, what matters is that at some point in the future they will.

3- If point #2 is a fact, then someone would have done it already, no? Yet we hadn't seen any such thing

We don't get any answers in reality!

a- Humans might not have visited our time, they may not have traveled too far in the past
b- They may have discovered that it's possible but decided not to do it as any minor alteration in the past might render the future (their present completely different)
c- Time travel is not possible!

So we are back at square 1!

 

Rob9874

Diamond Member
Nov 7, 1999
3,314
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Originally posted by: ShadowOfMyself
Well, not exactly.. Remember we dont have time travelling devices yet, so if you travelled to the past you would be stuck there forever... Maybe they only travel back to the point where the first time machine was invented so they can go back to the future :p

Well, whatever you took back to the past would have to come with you. If your theory were true, that traveling before the time machine was build would destroy its existence, wouldn't the same be true for the time traveler? Can you travel back to before you were born? And if so, then why can't the time machine stay intact?
 

TheSiege

Diamond Member
Jun 5, 2004
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they would probably come back to the past and take our jobs
"dhey tok r jooooobs"
 

DarkThinker

Platinum Member
Mar 17, 2007
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Originally posted by: Rob9874
Originally posted by: ShadowOfMyself
Well, not exactly.. Remember we dont have time travelling devices yet, so if you travelled to the past you would be stuck there forever... Maybe they only travel back to the point where the first time machine was invented so they can go back to the future :p

Well, whatever you took back to the past would have to come with you. If your theory were true, that traveling before the time machine was build would destroy its existence, wouldn't the same be true for the time traveler? Can you travel back to before you were born? And if so, then why can't the time machine stay intact?

Maybe they meant that you can only travel back to the time the time machine was built so that you can go back to the future?
 

Kadarin

Lifer
Nov 23, 2001
44,296
16
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Geez, don't you guys ever watch Star Trek? They don't interfere because they're bound by the "Temporal Prime Directive".

Actually, you should watch the movie Primer.
 

txrandom

Diamond Member
Aug 15, 2004
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71
Originally posted by: ShadowOfMyself
Originally posted by: txrandom
Originally posted by: ShadowOfMyself
Well, not exactly.. Remember we dont have time travelling devices yet, so if you travelled to the past you would be stuck there forever... Maybe they only travel back to the point where the first time machine was invented so they can go back to the future :p

What if the time traveler traveled to the past in a time machine that came with him. He should be able to go back to the future right?

I really have no answer for that, maybe its only possible to teleport organic matter... I have no idea lol

Btw since we are on this topic Ill take the chance to ask another question... When you are in space travelling at high speeds time goes by slower, right? So... If we had a lightspeed spaceship, and travelled in it for one year, when we came back to earth, people would have age much faster, right? Well, thats technically time travelling into the future :confused: or am I missing something?

This is something my Physics teacher talked about. I didn't understand how traveling faster makes time slower. Time is a human-defined constant. There is one second every second. If we walked on Earth for 1 year at 1 m/s and traveled in space at 3 * 10^8 m/s for 1 year, people on Earth would still be 1 year older.

I might be missing something obvious because I've heard this from other sources too.
 

manowar821

Diamond Member
Mar 1, 2007
6,063
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I don't believe that time travel is possible. Remember the rule that states matter cannot be created or destroyed, only changed? If you were to travel back in time, you would be adding matter to the past... That cannot happen.

How's THAT for a mind-****?

Also, I don't really believe in "time" as a physical entity. I'm sure there is a different explanation of why clocks slow down when we have them travel at high speed... I'm pretty crazy about "hyper-drive" or worm-hole travel, though. Cool stuff.
 

So

Lifer
Jul 2, 2001
25,923
17
81
Originally posted by: txrandom
Originally posted by: ShadowOfMyself
Originally posted by: txrandom
Originally posted by: ShadowOfMyself
Well, not exactly.. Remember we dont have time travelling devices yet, so if you travelled to the past you would be stuck there forever... Maybe they only travel back to the point where the first time machine was invented so they can go back to the future :p

What if the time traveler traveled to the past in a time machine that came with him. He should be able to go back to the future right?

I really have no answer for that, maybe its only possible to teleport organic matter... I have no idea lol

Btw since we are on this topic Ill take the chance to ask another question... When you are in space travelling at high speeds time goes by slower, right? So... If we had a lightspeed spaceship, and travelled in it for one year, when we came back to earth, people would have age much faster, right? Well, thats technically time travelling into the future :confused: or am I missing something?

This is something my Physics teacher talked about. I didn't understand how traveling faster makes time slower. Time is a human-defined constant. There is one second every second. If we walked on Earth for 1 year at 1 m/s and traveled in space at 3 * 10^8 m/s for 1 year, people on Earth would still be 1 year older.

I might be missing something obvious because I've heard this from other sources too.

You have no grasp of relativity whatsoever. I'm not trying to be offensive, and I'm sure you could learn it - you probably had a bad teacher, but you are absolutely, 100,000% wrong.
 

Rob9874

Diamond Member
Nov 7, 1999
3,314
1
81
?I have a time machine at home. It only goes forward at regular speed? -Demetri Martin
 

EagleKeeper

Discussion Club Moderator<br>Elite Member
Staff member
Oct 30, 2000
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Or the fact that travel within time causes a dimensional shift so that it acts like a one way mirror?
 

So

Lifer
Jul 2, 2001
25,923
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81
Originally posted by: EagleKeeper
Or the fact that travel within time causes a dimensional shift so that it acts like a one way mirror?

Watching too much star trek, eh Eagle? ;)

Make sure your time machine doesn't emit too many tachyons...