Time travel idea

2008-06-24 18:19:14

#1

twiistaaa: Member; +87|7090|mexico

Just to start out, i know nothing about time travel and i've never watched anything more sci-fi than star wars so while my idea will be (undoubtably) destroyed, at least do it in a gentlemanly manner .

So if someone from 2008 travelled back to 1968 and changed an event, then is it possible that we would never know about it because it would still take 40 years for that infomation to reach 2008. if time itself travelled like or similar to light, the event cannot be seen until it reaches you. if it takes 40 years then by the time it reaches 2008, our current time would be 2048 and we would never know what had happened.

On that, if someone decided to kill their own grandfather he could do so because while the past had changed the present has yet to be effected and the future would never be touched.

Is this a valid idea at all? has something similar to this already been made up? I know my concept of time is way off but its the general idea of eliminating a paradox.

2008-06-24 18:21:05

#2

FatherTed: xD; +3,936|6922|so randum

We would never know about it, because we would not know the difference.

Small hourglass island
Always raining and foggy
Use an umbrella

2008-06-24 18:26:13

#3

Cheez: Herman is a warmaphrodite; +1,027|6860|King Of The Islands

ITT: Brains asplode.

My state was founded by Batman. Your opinion is invalid.

2008-06-24 18:30:19

#4

cowami: OY, BITCHTITS!; +1,106|6711|Noo Yawk, Noo Yawk

twiistaaa wrote:
Just to start out, i know nothing about time travel and i've never watched anything more sci-fi than star wars so while my idea will be (undoubtably) destroyed, at least do it in a gentlemanly manner .

So if someone from 2008 travelled back to 1968 and changed an event, then is it possible that we would never know about it because it would still take 40 years for that infomation to reach 2008. if time itself travelled like or similar to light, the event cannot be seen until it reaches you. if it takes 40 years then by the time it reaches 2008, our current time would be 2048 and we would never know what had happened.

On that, if someone decided to kill their own grandfather he could do so because while the past had changed the present has yet to be effected and the future would never be touched.

Is this a valid idea at all? has something similar to this already been made up? I know my concept of time is way off but its the general idea of eliminating a paradox.

watch Back to the Future, it will answer everything (seriously, it will).

2008-06-24 18:36:23

#5

AussieReaper: ( ͡° ͜ʖ ͡°); +5,761|6575|what

Then does traveling backwards in time take 40 years to do?

If the affect takes that long, it must work the other way too.

The thing I really hate about time travel is that if I were to travel back in time, I would also have to travel at a tremendous distance. Because the Earth is rotating, orbiting the Sun, the Sun is moving along the Milky Way galaxy, and the galaxies are expanding.

If I wanted to go back to yesterday and be millions of miles away from now and where I want to be also.

And if I wanted to go forwards in time, my time machine would end up in space and not stay on Earth.

That's what I think anyway.

2008-06-24 18:36:39

#6

Mutantbear: Semi Constructive Criticism; +1,431|6386|London, England

Well the grandfather isn't possible since if you killed your grandfather then you would have existed so you couldn't have killed him but if you didn't kill him you couldn't be dead. I love time paradoxes WOOOOOOOOO

_______________________________________________________________________________________________

2008-06-24 18:37:51

#7

Poseidon: Fudgepack DeQueef; +3,253|6959|Long Island, New York

Cheez wrote:
ITT: Brains asplode.

QFT

2008-06-24 18:38:11

#8

CaptainSpaulding71: Member; +119|6779|CA, USA

it's a classic paradox with time travel - the bit about killing your father and then you won't exist thing.

i took a class in history and philosophy of science on Einstein's special and general theories of relativity. Time travel has been theorized as being possible but the energies involved would be so enormous to go back in time even beyond nanoseconds as to be prohibitive. it's been about 15 years since i took the class, but i think there was some thought experiment devised that said you could use a black hole's energy to act as the 'machine' in this case. still, you have to deal with that whole event horizon thing and what happens when you cross it isn't too fun. that is, when entering the black hole, your head will accelerate in one direction and your azz in another so you become really tall and skinny. i doubt anyone will survive that.

i've also taken quantum physics class to back up the math that we neglected to derive in the HPS class. at the quantum level, things get real...funny if you know what i mean. it's quite a bit different than newtonian mechanics.

Last edited by CaptainSpaulding71 (2008-06-24 18:40:32)

2008-06-24 18:39:19

#9

ATG: Banned; +5,233|6951|Global Command

Nah, it's a paradox, ya dig?

If you killed your grandfather the future you claim to be unaffected would not transpire the way it would have.

2008-06-24 18:39:52

#10

chittydog: less busy; +586|7257|Kubra, Damn it!

TheAussieReaper wrote:
Then does traveling backwards in time take 40 years to do?

If the affect takes that long, it must work the other way too.

The thing I really hate about time travel is that if I were to travel back in time, I would also have to travel at a tremendous distance. Because the Earth is rotating, orbiting the Sun, the Sun is moving along the Milky Way galaxy, and the galaxies are expanding.

If I wanted to go back to yesterday and be millions of miles away from now and where I want to be also.

And if I wanted to go forwards in time, my time machine would end up in space and not stay on Earth.

That's what I think anyway.

Good thinking. People always forget about the rotation of the Earth and its movement through space. I read a book years ago that suggested you could travel through time just by fixing your place in the universe and traveling to where you want to go once you got to the time you wanted.

2008-06-24 18:40:52

#11

AussieReaper: ( ͡° ͜ʖ ͡°); +5,761|6575|what

ATG wrote:
Nah, it's a paradox, ya dig?

If you killed your grandfather the future you claim to be unaffected would not transpire the way it would have.

And in that future you decide not to build a time machine and oh god I've gone cross-eyed.

2008-06-24 18:41:42

#12

chittydog: less busy; +586|7257|Kubra, Damn it!

By the way, just because Fry was able to kill his own grandfather doesn't mean you would be able to.

2008-06-24 18:42:38

#13

AussieReaper: ( ͡° ͜ʖ ͡°); +5,761|6575|what

chittydog wrote:
By the way, just because Fry was able to kill his own grandfather doesn't mean you would be able to.

But Fry was his own Grandfather.

2008-06-24 18:43:24

#14

Cheez: Herman is a warmaphrodite; +1,027|6860|King Of The Islands

chittydog wrote:
By the way, just because Fry was able to kill his own grandfather doesn't mean you would be able to.

Did you even watch the episode? Fry is his own grandfather.

EDIT: Dammit Reaper, stop DOING that!

Last edited by Cheez (2008-06-24 18:44:07)

My state was founded by Batman. Your opinion is invalid.

2008-06-24 18:45:54

#15

CaptainSpaulding71: Member; +119|6779|CA, USA

Read 'The Physics of Star Trek' by Lawrence M. Krauss

chapter 3 discusses how you can use a wormhole to theoretically create a time machine. the trick is to not die in the process and also to have the wormhole remain stable.

2008-06-24 19:06:12

#16

Bert10099: []D [] []\/[] []D; +177|7162|United States

Going back in time is impossible, you can only go forward.

You can only go back as far as the creation date of the time machine itself. Say it was built on June 24th, 2008. You could not go back in time any further than this date, but you can go as far ahead as you want.

Think of it as restoring your computer. You can only restore your computer as far back as the creation of the first restore point. You can't go back any further.

2008-06-24 19:26:03

#17

Kmar: Truth is my Bitch; +5,695|7023|132 and Bush

There are some workable theories for time travel involving manipulating space time. If I remember correctly you would only be able to go back as far to when the (time machine?) was created. If a time machine was built today future generations would only be able to travel back to today. They couldn't go back and check out dinosaurs in other words.

Edit: Found it http://www.liveleak.com/view?i=fc3_1191569230

Xbone Stormsurgezz

2008-06-24 20:02:56

#18

ReTox: Member; +100|6921|State of RETOXification

I've had an intense desire for knowledge on this, and other, theoretical subjects. Not the sci-fi ideas but true science, specifically Quantum Mechanics and M Theory. So I started to write out what I know and found myself needing some reference. I found this article and Dr. Michio Kaku says it much more elegantly and user friendly than I ever could:

http://www.mkaku.org/articles/physics_timetravel.php

Last edited by ReTox (2008-06-24 20:03:15)

2008-06-24 20:26:21

#19

Defiance: Member; +438|7093

Here's how to eliminate the paradox:

Imagine you tell someone to think of a number in their head, and then have them tell you what the number is. You then go back in time, sometime between them choosing a number and tell it to you. You tell them their number. To the other person, it appears you've "read their mind" and not that they told you the number then you went back in time and told them. To them it never happened.

So say you want to go back in time and kill your father/grandfather/whatever. There is only time travel for the person doing the traveling, so if you were to kill your father/grandfather you would disappear at that instant as well. To everyone else in the world, your life did not exist and that path of time was not taken. The path changed, you are not in it, you are gone.

As far as your original idea, "we" whoever is around to witness the event at that time would know about it at the time just like anything else. Someone in the future knowing of what happened in 1968 would be no different then finding the record of it. There's no 40 year delay, especially not for the person traveling because you're skipping over that segment of ordinary time.

2008-06-24 21:39:38

#20

GorillaKing798: Too legit to quit; +48|6536|Tampa, Florida

I think you would just create a parallell universe. Just because you traveled back in time doesn't mean that your universe has stopped completely, I would say that you would not see a change but instead you would have a different timeline with different events.

/talking out of my ass

2008-06-24 21:48:10

#21

S.Lythberg: Mastermind; +429|6868|Chicago, IL

1. time travel (via wormhole) is probably not possible, the gravitational distortion, intense heat, and powerful radiation inside the event horizon of a black hole would make such an endeavor pointless (and a black hole slows down light, not time, I doubt flying into one would do anything but compress you to a quantum singularity)

2. assuming you have in fact traveled to a previous point within your own universe (and not an alternate), killing your own grandfather would also remove you from existence, creating an impossible scenario)

2008-06-24 22:19:57

#22

Kmar: Truth is my Bitch; +5,695|7023|132 and Bush

Einstein vindicated.

Xbone Stormsurgezz

2008-06-25 01:08:44

#23

PureFodder: Member; +225|6707

Last time I checked there was only one semi-serious idea for making a time machine, but to make it would require a device consisting of about 3/4 of the mass of the universe.

I woldn't lose much sleep over time travel.

2008-06-25 01:38:59

#24

Ajax_the_Great1: Dropped on request; +206|7068

I hear if you make the earth spin the other way that you're retarded for thinking time travel is possible.

2008-06-25 08:24:38

#25

too_money2007: Member; +145|6730|Keller, Tx

Mutantsteak wrote:
Well the grandfather isn't possible since if you killed your grandfather then you would have existed so you couldn't have killed him but if you didn't kill him you couldn't be dead. I love time paradoxes WOOOOOOOOO

It could work, possibly.

Going back and killing your grandfather would create an alternate timeline, in which you'd exist because when you travel back in time, you become apart of the current timeline, until it has changed.

Or, as some scientists have claimed, time basically guarentees that you do not kill your grandfather, to create the time loop wherein you still are born and travel back in time in the future. If he was sitting asleep in his chair and you walked into his house to kill him, some force would make you either forget to do it, or change your mind. If he isn't where he's supposed to be, then you would eventually just get sidetracked and never complete your task....

Dunno...

BF2S Forums Time travel idea

twiistaaa wrote:

Cheez wrote:

TheAussieReaper wrote:

ATG wrote:

chittydog wrote:

chittydog wrote:

Mutantsteak wrote:

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