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Light as an instrument of time travel


ecoli

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Does this make sense to anyone?

 

A man traveling faster the speed of light reaches a distant planet. Because of his speed, he reaches his destination before the light from his starting point, thus it appears that he has reached his destination before he arrived, and traveled back in time.

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Even assuming he could go faster than light (which he can't do), he wouldn't arrive before he left.

 

A speed > C must be positive, as must the distance travelled in this instance. The result is that the time taken for the journey will be a positive value since t = D/S.

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You cannot draw a valid conclusion from an invalid premise.

 

It's only a theortical circumstance. Of, course he couldn't actually travel at that speed. Also, he wouldn't actually be in the past, only appear to be. In that case could it be possible, as a theoretical situation.

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It's only a theortical circumstance. Of, course he couldn't actually travel at that speed. Also, he wouldn't actually be in the past, only appear to be. In that case could it be possible, as a theoretical situation.

 

No, it really isn't. The theory doesn't address that circumstance. There is no valid answer.

 

It's no different than asking, "If I build a perpetual motion machine, what color would it be?"

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