> And we all know moving along a curved path has non-zero acceleration.
Not to give the OP undue attention for what is a truly weird post, but a curved path through curved spacetime (as seen from a different perspective), as with a gravitational orbit, can have zero acceleration.
> It is obvious that earth is rotating around the sun not the other way around. You just have to consider the forces.
That's not obvious at all -- there are no forces at work in a relativistic orbit (because gravity is not a force). The earth and the sun orbit their mutual center of mass, neither experiences acceleration, and neither of them experience a real centripetal or fictional centrifugal force.
Therefore there would be no way to use centrifugal force to argue that one of the bodies has a special role in the orbit. It's easy to see why -- just adjust the relative masses, gradually make the sun's mass smaller and the earth's mass larger, and try to argue that there's a special moment where their roles reverse. Clearly not the case -- regardless of their relative masses they're always equal partners in an orbit, with one of the bodies farther from the mutual center of mass in proportion to its (smaller) mass.
Not to give the OP undue attention for what is a truly weird post, but a curved path through curved spacetime (as seen from a different perspective), as with a gravitational orbit, can have zero acceleration.
> It is obvious that earth is rotating around the sun not the other way around. You just have to consider the forces.
That's not obvious at all -- there are no forces at work in a relativistic orbit (because gravity is not a force). The earth and the sun orbit their mutual center of mass, neither experiences acceleration, and neither of them experience a real centripetal or fictional centrifugal force.
Therefore there would be no way to use centrifugal force to argue that one of the bodies has a special role in the orbit. It's easy to see why -- just adjust the relative masses, gradually make the sun's mass smaller and the earth's mass larger, and try to argue that there's a special moment where their roles reverse. Clearly not the case -- regardless of their relative masses they're always equal partners in an orbit, with one of the bodies farther from the mutual center of mass in proportion to its (smaller) mass.