Special relativity says that there is no privileged perspective with respect to linear velocity, but general relativity showed that rotating reference frames ar

Special relativity says that there is no privileged perspective with respect to linear velocity, but general relativity showed that rotating reference frames are different, since one frame sees a centripetal forces while the other frames sees a centrifugal/gravitational force. To put it differently, if I pass someone on the train moving at constant velocity, there's no experiment that I can perform which proves that I'm moving while the other person is standing still, or vice versa. However, if I'm in a centrifuge, instead of on a train, then I can figure out which one of us is moving by measuring who is pressed up against the wall and making funny faces.