Yea_Boii

I like to think that with time, we will make vast progress in science and invent things that we would have never thought were possible. For example thousands of years ago, who could have thought flying was possible?

Similarly, maybe one day, thousands and millions of years from now, one would think we would be able to make a time machine. And if that's plausible then howcome, we havent had any visitors from the future yet (ofcourse except the terminator :P ). So what does that say? does that mean that we never got around to creating the time machine? or maybe this era is so boring, that no future time traveller wants to visit?

sNOVA

to begin with, time travel isnt possible. a fact. there are loads of self contradictions in the concept of time travel itself. even if the human race succeeds in defying the laws of physics then this is the most important time of history of homo sapiens. I hope our future time travelers come back and wake up Bush on his trip to the kindergarten on sep 11. But of course they havent. which means theyr not interested which means they are americans there u go

Yea_Boii

wait a second. time travel (forward & backward) is permitted by physics my friend. Read up!

Faris Udeen

Time travel would be boring becuase you could't take part in anything only observe. If you played around with the past you might ruin the future.

I'd love to go back in time and help out/ join in an epic battle but for example i might help say one side beat another in one war only to find that a third party could alter history by winning when they should't.

For example i'd love to have been a Russian sniper at Stalingrad, you know enemy at the gates style but what if inadvertantly by beating the nazis earlier in the war, they end up adapting for battle for the later period. Imagine the Nazis having a spare couple of divisions at D-Day if they did then that episode would have been the total anahilation of the Allies and thus a victory to Hitler.

If you think thats a bit extreme in reality 80% of the German war losses were caused by Russians so if the Germans could have got out of there then they would probably have lasted out D-Day.

Time travel really isn't that great if for five minutes of gun-toting fun you end up not only wishing you werent born but getting your wish

COLD_FIRE

Only if the mass is that of a light wave particle which is ofcourse confined and would travel faster than the speed of light itself, through a worm hole which actually haven't yet been devised nor theoretically mentioned until an astronomer Carl Sagan wrote a Novel Contact and wanted his characters to travel in space because he knew he can't at the time as this would mean his characters moving faster than the speed of light which would be breaking the fundamental rule of physics.

Yes, if u omit all that up there then yes, it's as possible as telling hitler u are going to heaven.

TLK

that is possible but I think you are talking about technology to build a machine



that is a plausible argument (and i think put forward by a physicist 'where are all the time travelers') .. but does not cover all the aspects. There are 2 theories that answer that question

1. Time travel is only possible towards future and is one way travel .


2. Time travel can be backward but is not possible beyond the time when you built the time machine. So if machine was built last week, you can go back till that point only and not beyond that

FrozenFire

how can time travel even be possible?.. to travel in the future would hence mean we would know what future holds for us.. and more interestingly in future , we would actually get to see the people who are YET to be born..this is impossible. Nobody knows what the future is, except the one who is Lord of the past, present and the future, The Allah almighty.

diwana

Time travel concept is only good for movies. Nothing real.


Do we even know what 'time' means? Its another discussion on its own.

I think philosophically and literally speaking there is no present.

By the time we say its 8 O' clock, its actually 8 minutes three seconds. (Time it takes to finish sentence)

Obama

COLD_FIRE

I wonder why are u mixing this with Holy Mirage?
We are discussing the possibilities of time travel as per normal terms...
I guess we all believe that Almiraj is true, but that doesn't mean that human is capable of time traveling ON HIS OWN.
Are we understanding each other here?

Obama

No Offense Bhai Sahib............becuse there are some sects who doubt that our holy Prophet(PBUH) actually travelled bodily into the future........on a special ride from heaven!

The point that I am also trying to make is................

All them Modern Science Guru's some time out of arrogance of know it allness put down our Muslim beliefs...........

Yet they copy what has already happened 1400 yrs ago.........and claim it is an original concept..........like time travel!

COLD_FIRE

Hmm, yeah, well, i guess ... yeah, it's all a bit confused and mingled.
Well, no hard feelings from my end dear. Cheers.

diwana

You are free to assume anything its your right. :-)

As I have mentioned time and time again (pun intended)on this forum that scientific knowledge and religious teachings are two different matters and hence time travel by scientific knowledge is not possible.

With same token, religious matters cannot be confirmed or even refuted by available scientific knowledge hence I do not proscribe to preaching religion on the basis of ANY scientific knowledge especially when it comes to miraculous events.


Moses, Isa and Muhammad, etc. (PBUT) miracles are beliefs based upon scriptures which we read today and if someone want to believe them its fine if not then no point arguing.

Obama

Agreed!

diwana

Thanks. :-)

Med911

Haan? Havent you been reading up on all the latest in theoretical physics? Time travel is very much possible, except that it would require an unimaginble mount of energy. It may be unimagnable to day ut who knows whats possible.

As for the contradictions, they are now saying that if you were to change the past, instead of altering your future, you would be a creating a parallel universe where the new future would play out.

Yea_Boii

Well a wormhole is theoritacally allowed by physics, isnt it? And ofcourse, its nor practical at all since it'll take an inordinate amount of energy to tear up the space-time fabric. But i'm talking about the future. Maybe the next generations can figure out a way?

Yea_Boii

Yes, my topic is based on Stephen Hawking's question. For #2, why wouldnt you be able to go back before the time machine was created?

koozager

^Hawking asks this question in his book and provides multiple hypotheses as answers. Ill summarize for everybodys pleasure.(The answer to the original question)

i)"What happens in space-time must be a consistent solution of the laws of physics".

So history is consistent and may not be altered by time travelers. So you can not go back in time unless history has already recorded that you already had arrived in the past.

"moreover when you did go back(in time), you wouldn't be able to change recorded history. That means you wouldn't have free will to do what you wanted".

ii)"..when time travelers go back to the past, they enter alternative histories which differ from recorded history"

This merges with the idea that our universe is a 4 dimensional brane drifting in an 11 dimensional sea, along with an infinite amount of other branes.

According to this the infinite number of branes provide that all possible histories have been recorded in one brane or another. So time travel would be a jump from one brane to another.

A time machine would be a vehicle that can create a worm hole on demand to another point in space time, within our universe or another. However the energy required, as mentioned above by Faris is incomprehensible. Just to help people understand, a worm hole(or the Einstein-Rosen bridge)is a temporary bridge between two black holes, which exists for an extremely short period of time. So first you need the energy to create two black holes & then more energy to keep the bridge alive long enough for the vehicle to go through. Hawking says it maybe be possible for advance civilizations to keep the Einstein-Rosen bridge(wormhole) open long enough for a spaceship to pass through. He then later says that he would bet against it.

About Diwanas question about what time means. The temporal dimension is like any other dimension, but one through which humans are constantly traveling and we perceive this as time. Since our biological existence is dependent on this inertia of traveling through time and seeingthings as past or future, any time travel would require a bubble of space-fabric in which humans could encapsulate them selves to allow for our biological functions to continue. This bubble would have to be ripped from one part of the mulit-verse, transported through two black holes through the Einstein_rosen bridge and then re attached to the target destination. Without this we would not emerge at the other side as ourselves but our molecules would emanate from the other side of the black hole.

To top it all off, Hawking also says that, after the event horizon, time starts to flow within the black hole at a right angle from the flow of time as we know it.

Yea_Boii

Thanks koozgar

i) But what if we are able to go back and change events. This might lead us to a different timeline. Kinda a parrallel universe theory.

Also, I don;t understand but how does what you posted answer the question as to why there are no time travellors visiting us right now? especially since in your post it says that future civilizations might be able to create and sustain wormholes.