in fact violation of weak equivalence principle by mach inertia principle because of large scale dependency of the inertia results modification of Newtonian dynamics with machian modified inertia so that milgrom model is deduced as an approximation and verification of machian modified inertia with mond paradigms is argued here. it is introduced here a new method in cosmology that the physics laws are correlated to the boundary conditions and it is not logical to integrate inertia in the galaxies and cluster of the galaxies over the whole universe suppose inertia is bound limited integrated over the boundary of the system as a quasi universe and this machian Newtonian gravity does refute dark matter theory and ends to the modified gravity mystery.