INTERESTING FACT

I'm no physicist and so it's likely I'm wrong on this, but isn't there some idea linked with Einstein's theory of relativity, that if you travel faster than the speed of light, somehow time travel is theoretically possible?

And also, would black holes be worth a mention?

I'm not sure about these though :S

If you take the most basic ideas of E's theory of relativity, then yes that's true. However, there's a lot of stuff about increasing mass and things like that that people tend to ignore when they want to imagine time travel. BUT...the people who point those things out and say that time travel is not possible are the same ones who years ago would have said that a heavy object cannot fly, and that we would never have a hologram that you could see without shining a laser on it. I remember experts saying that we would never have a color flat screen, and that hasn't been that long ago. When people say "time travel is impossible," it means they don't know how to do it. That's ALL it means.

To travel back in time would require every apple that fell from a a tree to defy gravity, every raindrop to 'unfall', every victim of war, famine, natural death to rise from the dead. Even Einstein couldn't conceive this.

what sort of fact is this? There is nothing that says time cannot go back. Even Einstein excepted that.

mark fleming wrote: #
To travel back in time would require every apple that fell from a a tree to defy gravity, every raindrop to 'unfall', every victim of war, famine, natural death to rise from the dead. Even Einstein couldn't conceive this.

Mark Fleming photographer?

well, it makes sense. If time travel does exist, why can't we see any anachronism existing in the world today?

we can tell that the human race will never be able to travle back in time. how do we know because if we did descover it then some one from the futer would have come back to the present time or a time before now and told us that they had done it but they have not so there for we can tell it will never happen

Perhaps time travel is possible, but it was discovered that if time travel was made apparent to the past, that it would then influence the future into never developing time travel, because the motivation that was there to develop it was gone. So, they somehow vowed to never go back... or at least never make it known that they go back in time.

very interesting, although this proves and states all modern theories, but maybe soon... or eons away, we will find that it just might be possible

when we bounce a rubber ball it will not continue going through my floor but it will bounce back

but overall completely true...

The idea that you can go back in time is somewhat absurd. What you can do is go side ways and back. What I mean is that as soon as you had gone back you would be in a different dimension than the one you came from because in that dimension you were not where you are now and and you didn't know the things you do now; therefore it's a different dimension. Once you jumped in that time machine, your friends would never see you again.

The problem with moving through time is the human mind can only comprehend one thing at a time in sequential order. Travelleing (we call it travelling because we can't comprehend it as anything else) in time isn't something we need to do physically, our minds need to be able to comprehend more than one thing at once.

There are countless theories behind this, but i love a good philisophical/physiological debate, so I'm going to share my theory...

We are are alive and in a 3 dimensional world, we are only able to perceive time as a linear concept. In order to reach the ability to "travel" through time, we need to leave the 3 dimensional world (through meditation, death, or however you want to view it). We would then reach a state taht is beyond human comprehension, between existence and non-existence. It is this plane of existence where we could perceive anything and everything all at once, do anything, and go anywhere.

I think that when we discover a way to communicate with that state of existence (ie: talk to the dead or capture them ghostbusters style) will we then be able to travel through time.

Or a delorean with a flux capacitor, whichever comes first.

just because you travel back in time doesnt necessarily mean that the things that have happened would have to "unhappen". you would simply go back knowing what will happen in the dimension that you were from. The only problem (Con) I see with time travel is that one small change of the past could gratly affect the future. And since we really have no idea how or what would do this, it would be very dangerous to try even if we did have the capability. This is just my opinion. any thoughts?

Time doesn't exist, of course you can't travel through it.

@ Daniel: Time does exist. How else can one ever explain any sort of progression, from the smallest level to a cosmic level?

One of the most fundamental properties of the universe is change, which defines time. Obviously the universe now is very different to how it was 13 billion years ago, and this is surely not possible without time.

Time is not merely a subjective, human concept. Time passes objectively and indisputably, which is why processes such as red shift are detectable.

As for your second statement, 'of course you can't travel through [time]', every single person who is alive at this moment is doing just that.

I think you can time travel, but only into the future, and not into the past, this is because time always and must move forward, never backwards. You can time travel to the future by moving close to the speed of light which distorts time for the person traveling at that speed. A 16 year old boy can travel at the speed of light for 2 years, come back and is 18, while all his old friends are now 60. A "time travel machine" -could- be made by creating perhaps a simple chair or pod that vibrates at the speed of light.

The universe is four dimensional space. Three dimensions are the x-y-z axes to represent a location of a point and the fourth dimension is time, which is a uni-directional vector. For instance, to locate a particle in the universe, we say that the particle is at x-y-z coordinates at a specified time.

In physics, theoritically, forward time travel is possible at higher speeds (speeds close to the speed of light).

Cosmic theory says that one can shift dimensions (through meditation,..., etc) which will allow a person's mind to go back or forth time.