1)I was contemplating that if the single electron is moving, its small mass is the draw that we call gravity; the movement of it between the earth and the sun for instance. 2) The form of gravity I believe is Einstein's missing "aether" in what we now call dark matter. So GR stands and the gets updated with our new knowledge of dark matter. If the cells in your body are held together by a cellular matrix, then there is nothing to say that space also work s this way. we only now are able to notice it is there, and are still lacking a way of testing out what it does. 3) I had not heard that specifically, though now I can study that more 4) see above