Is time travel possible? (vis a vis the Grandfather Paradox)

[Isomotopes]

But time travel into the future is possible. We are doing it right now. And if that is to slow for you, just go take a trip on a rocket at .999c and you will get there faster :hihi:

 

We're not traveling into the future the future is becoming the present then the past so as it happens it isn't the future any more

[Jay-qu]

Its just a manner of defining the word future. Of course you cant be in your presents future, that would mean you are in two places at once. Like standing 10m infront of yourself.

 

But that doesnt mean that we arent going throught time. Think about moving through space, each time you have moved you can say 'this point is where I am standing' but the next instant you may be at another point (relative to a suitable inertial reference frame). The same happens through time, at any point you can say look im here in the present, but that doesnt mean that we are not travelling.

[Isomotopes]

Jay-qu you said it yourself present as soon as time is the present it is no longer the future we are just progressing in a linear fashion

[E=mc?]

Divergence is a possibility[or many worlds]. Look at a tree at both ends. Current time consists of the trunk if you will. Moving in either direction takes you either to the branches or the roots.

[Overdog]

I am very sceptical of the idea that time travel is possible at all. Where are all the time travelers from the future?

 

As well, time travel introduces paradoxes, Paradoxes have not been observed in nature.

 

Seems to me time is purely a concept, the only things that actually exist are those things that exist NOW.

[modest]

I am very sceptical of the idea that time travel is possible at all. Where are all the time travelers from the future?

 

Apparently all killing their grandfathers and turning themselves into nonexistence :cup:

 

-modest is a time traveler

 

Ignore that last bit there

[CHADS]

I am very sceptical of the idea that time travel is possible at all. Where are all the time travelers from the future?

 

As well, time travel introduces paradoxes, Paradoxes have not been observed in nature.

 

Seems to me time is purely a concept, the only things that actually exist are those things that exist NOW.

 

Time I believe is a concept which used to understand a constantly changing system at points along its evolution .... But if a system had one Variable that never changed, it could be described as frozen in Time **IF ITS IN RELATION TO NOTHING Else** ....

 

Two single entities 10m apart that never do Anything at all Conceptually never experience time there is nowhere to gauge time becuase they would exist as two changless entity's ...

 

Like Infinity ... a single line of infinity that was the same always experiences no time...

 

If a single point along the line changed in anyway then the event could bring in time to the equation.

 

Even if you took this event away the second take away event would still be moving forward in time event.

 

So a radical thought maybe be in order ... Perhaps you can only ever move forward in time ,.. Even moving to a past event somehow by moving your biological information to a previous event in space/time that's preserved the infomation that once existed . is still moving forward.

 

Thought Experiment for time travel .... a ball rolling through rooms that closed the doors behind itself could never return unless the fabric of space/time was warped to the degree that the previous room was warped around to the front ... this seems like cheating ... time is still moving forward ..... The only way is if the Information in the ball was reduced to a ZERO(where time would be frozen and stopping the forward motion in time )to where it never existed in every manner .. and the result would be its previous state in the previous room .... This is simultaniety .... The point where it becomes a nothing is a something PARADOX so

True time travel to the past must stop time completely becuase time always moves forward in some refrence frame or another (even if the system goes in reverse) and also from the reduction of time to Zero it must occupy its previous information state without moving forward from Zero time .. sum problem!!:hihi:

 

 

Thats my take ~ sorry it was a bit long winded!

[Jon13]

As for the paradox it could also be resolved by considering the possibility of the past not effecting your future. In this idea each instant in time can be considered to be a sheet of paper(crude analogy) and time flows by the transition of moving between the sheets, so if you go into the past (a previous sheet of paper) you will alter that time future but not your own - so you will stay alive and if you return to your time your grandparent will still be alive.

 

if you killed your grand father, then you would not exist in the first place, therefore you could not go back in time to kill said grandfather...ect. simple solution: time is a circle looping back in on it's self. therefor what any one person has done to effect the circle doesn't change the circle in any way, it was meant to happen and nothing could prevent it from happening. it has already happened before. :bouquet::(:hihi: