Re:Best Practices for Time Travelers (2003)
by allemagne on Sunday November 27, 2016 @08:03PM
(#13052714)
Time travel is dubious, but in what useful sense is there no such thing as time? Define the phenomenon of time dilation or just the concept of motion without it. Particles go from position to position... but describing being at state X and then being at state Y seems to strongly imply the existence of what we understand as time.
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Re:Best Practices for Time Travelers (2003)
by adventured on Monday November 28, 2016 @03:51AM
(#13054225)
Time doesn't exist in the sense that it's just a measurement. I'm 6'2", that height does not exist as a tangible thing, it's a mathematical device.
Whether we're talking about 60 seconds, or 6 billion years, they're both measurements of distance traveled / motion. We measure one year by the earth's relationship to the sun.
Time travel cannot exist because the universe does not keep a record of where everything was at any given point in time, such that you can rewind (adjust) it all back to how it was at every or any given point in time. There is nobody recording that, there is nobody to rewind it, there isn't enough energy to attempt either the recording or the rewinding at an independent macro scale (eg could you properly rewind/adjust a solar system while the wider galaxy acts upon it? would you have to rewind the galaxy? and on it goes up).
Re:Best Practices for Time Travelers (2003)
by allemagne on Tuesday November 29, 2016 @01:26AM
(#13061290)
The argument about time seems plausible. I don't think time travel is possible either. I do however think there is such a thing as time and height. Units of measurement are certainly arbitrary but there is something that is being measured.