Well, I suppose you could define a stationary horizontal position as a point where the sun rises at a certain time each day. Then you could say that a plate is in fact "moving east" if the sun is rising earlier (by very small fractions of a second) each day.
Well, I suppose you could define a stationary horizontal position as a point where the sun rises at a certain time each day. Then you could say that a plate is in fact "moving east" if the sun is rising earlier (by very small fractions of a second) each day.