i'm time traveling right now.

Heheh...  you're right.
Time is such an interesting topic,  it brings out all the intellectuals. I thought my ideas were radical, till I read through the other posts, many of us have similar ideas, and good eye opener counter points.

I too believe that time does not exist. It is just a measurement of change.
As mention before by another poster, we are talking about time travel, and not travelling to another dimension. What this means is that, my alterations of the past, will change what events took place that affects the present.  Not that we simply, shift off to a different dimension where things turn out differently.

If we do travel to another dimension, then this will be equivalent to travelling to another planet (another point in space), where things happen to have occurred similarly as our own, with a slight variance. Thus the grandfather paradox will no longer apply; killing myself in that dimension, will have no effect on me in my present, pass or future. 

On the other hand, if we are referring to travelling to the same time line that has resulted in my existence and all I observe in the present, then the grandfather paradox too will not be logical either.

Because, what will happen when I kill my own self in the pass? Obviously I won’t be able to do so.  Perhaps some may say that the whole fabric of time and space would crumble if I did so.  In which case, why aren’t we observing it now?

Then there’s the idea that things will play out in a predestine fashion, so that I will naturally, never be able to kill myself, or cause incidents that were never done in the pass. The idea of predestine, means that, in effect time is still flowing in a linear fashion,  which means that if I go to the future and observe myself.  With that knowledge change my actions in the future, instead of saying “yes”, I say “no”.  I’m sure that is possible, unless some unforeseen force controls my future body and I am just an observer. 

In otherwords it will be 1km in a sec. 100km in a sec. 1 billion light years in a sec. to infinity. You can never formulate the speed required before time actually stops.

Oh I must have missed it. I'm skeptical about it. Have to check it out later.

The clocks may be accurate, but what about the triggering?

I just looked up the wiki, and seems like time dilation has been proven, with a guy taking a plane round the world twice in both directions and the results show that time seems to be different from a stationary clock.

Need to give this more thought.

The layman examples given always explain "what" will happen, but when it comes to "how" it happens its all in math formulae, it's hard to imagine.

I've done more research, I think this explains the confusion between, what time stopping actually means:
Speed of light would not stop time..?
Perhaps time might be able to slow down, disproving my idea that time does not exist. But time travel (excluding going to the future with stasis) still appears to be impossible based on the explanation given earlier.

Hum yes.  That is a bummer :/ but as they say, if a theory cannot be explained in simple terms to a kid, perhaps the theory is all wrong

There has been ideas of holograms, and water vapour 3D TVs. hum... 4D?  that also applies to a movie. We're drifting off topic .

Yes.

I know that some might argue that the ball will quickly decelerate on leaving the car, due to friction, and no more propulsion from the car. But at the point of throwing, the idea is it should be faster than the car itself?  take particles in the air out of the equation.

If this were the case, this means that we could pass the speed of light, if we could create a huge vehicle travelling faster than 50% the speed of light, and another vehicle within it also travelling faster than 50% the speed of light.

(Yes I know it would be a ridiculous sized vehicle  )
(or...  perhaps if it were in a loop?)

And we could also have multiple: vehicle in a vehicle, that way each vehicle doesn't need to travel that fast.
But I don't think it's that easy is it?

Serious... wow...  I thought  that would not be possible at all. 

No, we are talking about hypothetically speaking, not refering to how that would be possible.

As you can see in "Back to the future" movies, it assumes that if you change your history, you will be transported to an alternate future.

From my explanation, that would not be called "time travel", only "space travel".

Which infers that we can't change our pass.  Unless it is predestined. But predestined is a silly concept because, that would mean that we will not be able to control our own actions.

Therefore I conclude that, time travelling to the pass is impossible.
I'm looking for proof like these for time dilation. Can you provide some references on this problem on satelites/GPS? Not refering to Astronaut's time in space, as their biology would be effected by more than just time.

if i where to have a time machine i would prefer to be able to got to the future, but the going back to the past is much more interesting and usefull.

i would get all the standard university text book on medicine, science, engineering, architecture and travel back a few hundred year in the pass and present these knowledge to one of the major empire, if they decide not the execute me for witchcraft and i get the approval of the king to implement the industrial revolution, i would be a god in that era with the kind of technological advancement that i given to the people.

like the Trevor Grant story line in the new season of eureka 

That means the past does not affect the future?

Well, that will be like what I stated as in a different dimension, or different world, that would not be considered as a different time.

The reason I say that is because you can never change the pass. You are changing a different pass, and in doing so, only the time traveller can see the difference, when he goes to that alternate universe.
But in the case of terminator, what is shown is predesitny, and nobody was able to change the pass.  no matter how the machines tried to kill Connor, they weren't able to, and no matter how Connor tried to stop the machine from taking over the world, he could not.  It all plays out, that in the end, everything happens predestined, the only thing is he didn't know it was predestined, until it occured.  

But assuming, you know exactly what happens, does that stop you from acting the opposite?