Hi all, I'm having a discussion with someone who believes they understand GR, here is their understanding of how gravity works... "The time and space at your feet are different from the time and space at your head. This has been experimentally verified, especially in terms of the time component. We have the technology to measure time accurately enough to actually make these kinds of experiments, and they have been made. A clock placed at your feet will run slower than a clock sitting on your shoulder. It is the dilation in spacetime (both space and time) between your head and your feet that cause your body to accelerate downward toward the massive earth. And because this is indeed the cause of gravity on the Earth, this means that you body is actually exerting a downward force onto the Earth's surface."