time travel Thread

does anyone else find time travel confusing?
i mean...(of course this is if it where real)
you go back in time and kill your grandfather,
you diseappear, then you wouldnt have gone back in time.
there for you would still exist, then you would go back in time and kill your grandfather but you wouldnt exist and... okay i'm stopping my brains about to explode...

Which is because Time Travelling is impossible.

It's confusing, but just because the human mind cannot comprehend such a complex system, doesn't mean it's impossible.

I think once you get into paradoxes that gets a little confusing, just because my mind and most other peoples cannot comprehend like you said San-J things that we don't know, like alternate realities and parallel universes for example.

Edited by: Hatel3reed

i dont think being human makes it impossible, its just not, physics wont allow for it, same with going really really fast, it just wont happen

Yeah then you get into time dialation and all that fun stuff. When you are traveling the speed of light time for you slows down while all your surroundings stay normal. Crazy stuff, so in theory if you and another person were born and one grew up in a normal every day life and one was launched into outer space traveling the speed of light, when the one launched into outer space came back in ten years, the child born and raised in this world would be 100.

Yeah, and a meterstick traveling at 0.86c is only 50cm long.. We're just getting into Theoretical Physics in my AP Physics class, and some of this stuff is pretty crazy. A compressed spring also weighs more than a released spring.

Theoretical and Quantum physics are definately the two subjects that interest me the most..

and if you want time travel just cross a time zone other then that have fun, the theory of relativity is really interesting. some of those quatum stuff is really amazing to think about

most if not all of these are just theories. no one knows for sure about any of this. It's just a widely accepted theory

They are just as much "theories", as are our accepted masses of the planets, for instance. Sure, we cannot actually "weigh" earth, but based on ecliptical and gravitational phenomena, we can deduce it's weight. Much the same, we can deduce these theories on the space time continuum.

Has anyone sent a meter stick flying at .86c? Of course not. But based on physical laws proved time and time again, we can prove it through mathematical reasoning.

San-J wrote: Has anyone sent a meter stick flying at .86c?...

I have

whats .86c?

86% of the speed of light

Oh. I'm only 15, haven't even taken a Physics course yet at my high school.

seen that movie "The Jacket"?

it's got time travel, but no means, other than chemicals and a straight jacket, good movie.

time travel isnt possible IMO.

but, transversing the multiverse is a different story.

Infinite universes, just have to hop into the right one.

San-J wrote: Has anyone sent a meter stick flying at .86c? Of course not. But based on physical laws proved time and time again, we can prove it through mathematical reasoning.

and the bumblebee?

Gmz1023 wrote: does anyone else find time travel confusing?
i mean...(of course this is if it where real)
you go back in time and kill your grandfather,
you diseappear, then you wouldnt have gone back in time.
there for you would still exist, then you would go back in time and kill your grandfather but you wouldnt exist and... okay i'm stopping my brains about to explode...

That reminds me of an episode of futurama.

Yeah i saw a documentary on quantum physics which was really dumbed down and it was still mind boggling stuff. There is a guy in our year who does cosmology and he is always going on about the quickest path between two points in space is a curve and some other weird stuff.

Edited by: Brad_Mclain

the quickest path from a to b is to bring a and b together isnt it at least thats what it said in the movie eventhorizon

Edited by: LiMeY

Never seen that movie but i think this has got to do with the way time bends in space or something.

Edited by: Brad_Mclain

I think that if we are to go back in time, we would be making a short loop in on ourselves. After you watch yourself leave, you are a permanent constant in that system. Simply like the mechanism of a snake or worm crawling along, until the loop is straightened out.

According to many of Carl Sagan's theories time travel into the future is possible provided you reach the speed of light.

Also I found the theory (albeit fiction) in Michael Crighton's book Timeline (not the shitty movie with Paul Walker) where the mere changing of time revels in the creation of a new dimension. This eliminates the possibility for paradoxes.

So say I lost my keys and decided to go back in time by a few minutes back when I knew I had them and to place them somewhere out in the open. The past me would find the keys and the day's events would be different.

Let's also say for the sake of arguement that there was a man outside of my elevator who just lost his job and needed money to support a drug addiction.

Having not had my keys and needing to look for them someone inevitably takes the elevator down first and is mugged. They resist the mugger and die.

Now having found my keys by replacing them in the past, I go down first before the elevator and encounter the mugger. I potentially resist him and die.

You see even the slightest change, alters everything. If time travel were possible any change you made would more than likely create a new dimension and have absolutely no baring on the one you just left.

Gmz1023 wrote: does anyone else find time travel confusing?
i mean...(of course this is if it where real)
you go back in time and kill your grandfather,
you diseappear, then you wouldnt have gone back in time.
there for you would still exist, then you would go back in time and kill your grandfather but you wouldnt exist and... okay i'm stopping my brains about to explode...

Why do you need to go back in time to kill your grandfather? Wouldn't it be just simpler to kill him in this present time? Or if he's already dead, you can kill your not-so-grandfather if you're into the father killing business...

But if you do go back in time to kill your grandfather before he has fucked someone and made her pregnant, take someone with you so this one can write down what happens in case you disappear and then this whole time paradox problem is solved.

Edited by: TwinBeast

Well the point of the pardadox theory is that if you kill your grandfather you are never born and thus can never kill him thus preventing his death. This would also prevent you from bringing back anyone to write anything down as you were never born to take part in these actions.

Some paradox researchers choose randomly 100 people to murder their grandparents. Each murderer gets one researcher with them to write stuff down, in case the murderer disappears. Do they all end up failing to kill their grandparents or does someone actually kill? Maybe someone fucks his grandmother and becomes The Grandmotherfucker! And then he's his own grandfather... And the person who was thought to be his grandfather was just someone who got killed. If this murder wouldn't have gone back in time, then his father/mother would have never born and so the murder wouldn't have born either.

Time tarvel is possible(in theory) but not in the sense that you can go back in time. Its a very confusing theory based on some of Insteins work. Basicaly it states that if you are able to leave the planet at the speed of light and return at that speed, only a smnall ammount of time will pass for you. While time on earth will have advanced a great deal of years.....you cant go back in time....but theoreticaly you can go forward....