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Originally Posted by Joker666

So If you hold a phone...and speak to someone on earth while traveling, you'd hear them 10 times faster? or would they hear you 10 times slower?

I don't think the speed of light is the desired speed...it would rather be the speed of infinity, which doesn't exist...

Hehe, before asking questions like this, you should know at what conditions a phone work, and how is the communication and the connection established...+ The speed of light is much greater than the speed of sound...

It is not true that everything we cannot reach is necessarily the infinity... The speed of light is for sure less than infinity... infinity is not a number... But leave the infinity alone, the speed of light is enough for the theory to be applied...

By the way, what I understand by going back in time is for example the dilatation of time for A so that the present B will continue to be the future for A, and A will be the past for B...
Ya3ne we can also create a delay that goes to infinity and stop the time!