Should have said last time that space-time "curvature" is relativity code-speak for "acceleration" or "gravitation." It's often something one can feel. Here's an imaginary example. Put a very precise atomic clock...
One of the groups that I have lunch with likes to discuss physics and astronomy. During one of these lunches, there was a bit of confusion about the Theory of Relativity (ToR), with people not being quite sure whether it means that measurements depend...
Reference: “Feynman’s Lost Lecture, The Motion of Planets Around the Sun,” by David L. Goodstein and Judith R. Goodstein, W. W. Norton & Company, New York, 1996. Richard Feynman was one of the most important physicists of all time...