>
> It does in the twins paradox, where ther frames are not inertial.
You don't seem to have any concept of inertia beyond
bodies that *remember* their states of motion.
That could take a lot of RAM and ROM and several of
these: http://www.research.ibm.com/grape/grape_ewald.htm
...for every particle in the universe.
Whether this is accurate or not, it will give
you some idea what has to be involved when
matter curves space-time. http://arxiv.org/abs/physics/0107015