One argument against Mach's principle is the speed of light restriction. How could the distant cosmic mass of the universe instantaneously have a local effect on an accelerating mass? But could we view this from the perspective of a field that is already presently locally at all points in space, a gravitational field that originates from the combined cosmic mass of the universe? Thus, a mass experiences an inertial force (dynamic gravitational force) instantly because a field is already present at the point of acceleration. This would be similar to an electron that is initially at rest (setting aside Heisenberg's uncertainty for a moment) within a magnetic field, sourcing from a magnet 1 light year away. As soon as the electron moves perpendicular to the field, instantly the electron experiences the Lorentz force. However, the disturbance of the electric field of the electron would take 1 year to "affect" the magnet. Any thoughts on this, anyone?