Explaination Of Gravity And Inertial Motion

a perspective on "gravity and inertial mass theory" in this paper i have made an assuption that needs to be clarified, in einsein's unification of everthing theory, i have to point out, that in order to take the motion of everything into full realization, you have to accept one thing. there is no state of non-motion. everything is relative to motion. i mean, a rock on the earth is at "rest"? how can it be? the earth is rotating, the earth is in orbit and the solar system travels through space in relation to other galaxies. so is there any true, at rest. not on the atomic level either. so my paper is presuming "at rest" is not a reality but a concept.