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A comment on The contest between gravity and quantum physics takes a new turn (2015). Parent comment

Re:The contest between gravity and quantum physics takes a n... by styrophone on Thursday June 08, 2017 @05:55PM (#14517478)
I think this thought experiment assumes the astronaut is spinning around an axis orthogonal to their belly. From the cartwheeling astronaut's perspective, the other one is also cartwheeling in their own plane.
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Re:The contest between gravity and quantum physics takes a n... by SomeStupidPoint on Thursday June 08, 2017 @05:59PM (#14517498)
But if you tuck in your knees and the other guy spins differently, that's a sign you're the one spinning, no?
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Re:The contest between gravity and quantum physics takes a n... by styrophone on Thursday June 08, 2017 @06:14PM (#14517580)
Yeah, the choice of a non-inertial reference frame for this example is a little confusing to me too. I also haven't been able to find an independent mention of the spinning astronaut experiment.
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Re:The contest between gravity and quantum physics takes a n... by dogma1138 on Thursday June 08, 2017 @06:19PM (#14517605)
No because you technically performed an action which changes the system.

Relativity states that there isn't a measurement you can take if you change the system however it's a different story.

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