Yeap. In order to preserve information causality, spacetime cannot deform instantaneously. i.e., an object X in a frame with relativistic speed near c compare

Yeap. In order to preserve information causality, spacetime cannot deform instantaneously. i.e., an object X in a frame with relativistic speed near c compared to an observer O. O will be unable to detect X by any means until X is very close. Also, my money is on frame-dragging and Einstein's figures being within half a standard deviation. http://arxiv.org/abs/0911.4718 http://arxiv.org/abs/0911.4718