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| quote: | Originally posted by DigiNut
BTW, to Dr. Z, I for one don't believe that any sort of time travel will be possible in several centuries at least, but there's a lot we don't understand yet, and just because we can't come up with a plausible theory now doesn't mean there never will be one. Remember, 50 years ago nobody had even considered the possibility of computers or even solid-state electronics, a few hundred years ago people thought the idea of a 'wave' or a 'quanta' was utterly ridiculous, and 500 years ago people thought the world was flat and a bigger ball would fall faster than a smaller ball...
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Yes, people thought certain thoughts were absurd at the times they were in. But the idea of time travel is not the same. Look: When people theorised waves/photons, they were describing matter/reality. They were describing the natural phenomena that occurs arround us. So making new theories is possible, no matter how absurd, you just have to have the proof.
But when you talk about something like time travel, you cannot theorise anything. Time is not a natural phenomena, time is a human invention, invented to keep track of changes. Its basically a tool to understand some other natural phenomena, like velocity (speed, meters per second). You cannot theorise/do scientific research on time.
Its like saying:
There are exactly 100 centimeters in one meter (definition). That is the unit of measurement that we will use. Lets make a theory, If we alter space and make each 1meter(m) = 2m, or 100cm = 200cm. Then all objects will be twice as high.
:. Impossible.
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