I needed to ask a range of questions about gtr without resorting to the complexity of trying to learn about the formalism on a forum. Many good responses were given to other questions on this forum but the inherit complexity of the situation still left room for misconceptions. Consider a homogenous hollow inertial mass sphere with no rotation in an otherwise flat region of space. As you approach this sphere the curvature increases along with the time dilation. As you pass inside this sphere acceleration drops to 0 but the time dilation remains the same as on the surface. Questions; (1) Is the time dilation uniform throughout the inside of the sphere? (2) Does gtr define the space inside this sphere as flat. The answer to these deceptively simple questions would provide myself and possibly others with a framework to learn much more about gtr and the formalism. Much thanks to the many intelligent contributors on this forum.