this much ppl get - but from our POV we think of this as an "illusion"
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Replying to @arthur_affect @BootlegGirl and
like the Skype call is years "behind" on both ends but it must be possible
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Replying to @arthur_affect @BootlegGirl and
Einstein's insight was since light waves are the only interaction that exists
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Replying to @arthur_affect @BootlegGirl and
there is no illusion, both twins objectively are "behind" each other at once
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Replying to @arthur_affect @BootlegGirl and
this only doesn't make sense if you think there's an external God time
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Replying to @arthur_affect @BootlegGirl and
so when space twin turns around, he does start "catching up" to earth twin
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Replying to @arthur_affect @BootlegGirl and
earth twin's messages sent by light come faster and faster bc now he's moving
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Replying to @arthur_affect @BootlegGirl and
toward earth, this much makes sense right
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Replying to @arthur_affect @BootlegGirl and
where our intuition breaks is we expect the speed of light to be relative
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so now he's going the other direction the messages must be moving faster right
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Replying to @arthur_affect @BootlegGirl and
you'd expect "They both sent 50 years of messages, v few make it as he goes out
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Replying to @arthur_affect @BootlegGirl and
and then as he comes back the speed of the messages gets faster and faster"
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