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Time Machines & Experiments
Time travel, Multiverse, Relativity & Apollo
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<blockquote data-quote="Harte" data-source="post: 28409" data-attributes="member: 443"><p><strong>Re: Time travel, Multiverse, Relativity &amp; Apollo</strong></p><p></p><p><div class='quotetop'>QUOTE(\"fanavans\")</div></p><p>Fanavans,</p><p>Time travel into the future is bound to be the equivalent of "experiencing it (time) differently." We are already going in that direction without using any time travel apparatus or theories. Since we are already moving into the future, the use of time dilation (or any other time travel mechanism) to travel into the future is equivalent to merely changing the rate at which one moves into the future. This would be "experience(ing) it differently."</p><p> </p><p>I think what's throwing you off here is the rather small point that time travel into the future violates no causal principles. Because of this, there is no reason to postulate the generation of a separate time line.</p><p>If you are referring only to Special Relativity, then I assure you that time dilation is absolutely real. It is an established fact, not a theory. It has nothing to do with subjective experience, it has been observed occuring to inanimate objects (clocks, particles, etc.) Special Relativity itself is a theory, in the scientific sense, because a new theory could be developed that explains the observed fact of time dilation (and the other relativistic effects associated with relative velocities) and presumably more things that Special Relativity (or General Relativity) does not explain.</p><p> </p><p>Time travel into the past, originally derived (at least scientifically) from the application of special circumstances to the General Theory of Relativity, <em>does</em> violate causality. The alternate timeline idea is a tool invented to explain away the paradoxes inherent in traveling into the past. There is no indication in physics that alternate timelines could exist, other than an obscure, little-accepted idea called the "Many Universes" theory of quantum mechanics. The alternate universes in this theory, however, have nothing to do with time travel and are not "formed" by something moving into the past.</p><p> </p><p>I should state here that the original idea of using the extreme gravitation present near the event horizon of a rotating black hole to warp time into a loop (the Einstein-Rosen Bridge) took a huge hit a few years back. The original idea was based on a geometry of the singularity that turned out to be wrong. So a black hole cannot be used for this purpose. That does not preclude travel into the past, it only invalidates the only theoretical method of accomplishing it at this time.</p><p> </p><p>Harte</p></blockquote><p></p>
[QUOTE="Harte, post: 28409, member: 443"] [b]Re: Time travel, Multiverse, Relativity & Apollo[/b] <div class='quotetop'>QUOTE(\"fanavans\")</div> Fanavans, Time travel into the future is bound to be the equivalent of "experiencing it (time) differently." We are already going in that direction without using any time travel apparatus or theories. Since we are already moving into the future, the use of time dilation (or any other time travel mechanism) to travel into the future is equivalent to merely changing the rate at which one moves into the future. This would be "experience(ing) it differently." I think what's throwing you off here is the rather small point that time travel into the future violates no causal principles. Because of this, there is no reason to postulate the generation of a separate time line. If you are referring only to Special Relativity, then I assure you that time dilation is absolutely real. It is an established fact, not a theory. It has nothing to do with subjective experience, it has been observed occuring to inanimate objects (clocks, particles, etc.) Special Relativity itself is a theory, in the scientific sense, because a new theory could be developed that explains the observed fact of time dilation (and the other relativistic effects associated with relative velocities) and presumably more things that Special Relativity (or General Relativity) does not explain. Time travel into the past, originally derived (at least scientifically) from the application of special circumstances to the General Theory of Relativity, [i]does[/i] violate causality. The alternate timeline idea is a tool invented to explain away the paradoxes inherent in traveling into the past. There is no indication in physics that alternate timelines could exist, other than an obscure, little-accepted idea called the "Many Universes" theory of quantum mechanics. The alternate universes in this theory, however, have nothing to do with time travel and are not "formed" by something moving into the past. I should state here that the original idea of using the extreme gravitation present near the event horizon of a rotating black hole to warp time into a loop (the Einstein-Rosen Bridge) took a huge hit a few years back. The original idea was based on a geometry of the singularity that turned out to be wrong. So a black hole cannot be used for this purpose. That does not preclude travel into the past, it only invalidates the only theoretical method of accomplishing it at this time. Harte [/QUOTE]
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